bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermodynamics of climate change between cloud cover, atmospheric temperature and humidity
Authors: Mendoza Víctor , Pazos Marni , Garduño René , Mendoza Blanca
Published: October 2021

On a global and annual average, we find a parameterization in which the cloud cover increase is proportional to the mid tropospheric temperature increase, with a negative proportionality factor. If the relative humidity is conserved throughout the troposphere, a 1 °C heating (cooling) of the mid troposphere, decreases (increases) the cloud cover by 1.5 percentage points (pp). But if the relative humidity is not conserved, then the cloud cover decreases (increases) by 7.6 pp. If the shortwave reflection effect of the cloud cover is dominant on a global scale, this parameterization leads to a predominant positive feedback: if the temperature increases like in the current climate change, the cloud cover decreases and more solar radiation reaches the surface increasing the temperature even more. The contribution of the present work consists in finding that the negative sign of the proportionality factor is due to the Clausius–Clapeyron equation; that is, to the magnitude of the derivative of the saturation vapor pressure at the typical standard surface temperature of 288 K. The negative sign of the factor is independent on the conservation or non-conservation of relative humidity in the troposphere under climate change.
Morphological and p40 immunohistochemical analysis of squamous differentiation in endoscopic ultrasound guided fine needle biopsies of pancreatic ductal adenocarcinoma
Authors: Haugk Beate , Horton David , Oppong Kofi , Leeds John , Darne Antony , Sloan Philip , Ness Thomas , Jones Claire , Bassett Paul , Nayar Manu
Published: October 2021

The basal-like molecular subtype of pancreatic ductal adenocarcinoma (PDAC) is associated with poor prognosis and upregulation in TP63ΔN (p40) network. Adenosquamous histology can be observed. This study assessed immunohistochemical p40 expression in fine needle biopsy (FNB) samples with PDAC and association with cytomorphological features of squamous differentiation and clinical data. 106 EUS FNBs with PDAC were assessed for eight cytomorphological features of squamous differentiation. P40 H-score (intensity 0–3 × percentage positive nuclei) was analysed for association with morphological features, patient age, gender, operability, chemotherapy and survival. P40 H-score in 14 paired FNBs and resections was compared. P40 h-score was 1–3 in 31%, 4–30 in 16% and > 30 in 13% of FNBs. It was significantly associated with intercellular bridges, elongated cell shape, sharp cell borders, angular nuclei with homogenous chromatin (p < 0.001) and dense cytoplasm (p = 0.002). Keratinisation was not seen. Inoperable patients (n = 81) had a shorter median survival for h-score > 30 (n = 9, 1.8 months) than for h-score ≤ 30 (n = 66, 6.7 months) not quite reaching statistical significance (p = 0.08). P40 was significantly associated with squamous morphology in FNBs with PDAC. P40 H-score > 30 showed a trend towards shorter survival in inoperable patients. Squamous differentiation may be a treatment target in PDAC.
Quantification of airborne SARS-CoV-2 genomic particles in different hospital settings
Authors: Amato-Lourenço Luís Fernando , de Souza Xavier Costa Natália , Dantas Kátia Cristina , Lombardi Suzette Cleuza Ferreira Spina , Júnior Alfredo Mendroni , Lindoso José Angelo Lauletta , Lima Felipe Gallego , Carvalho-Oliveira Regiani , Mauad Thais
Published: October 2021

We quantified the presence of SARS-CoV-2 RNA in the air of different hospital settings and the autopsy room of the largest medical centre in Sao Paulo, Brazil. Real-time reverse-transcription PCR was used to determine the presence of the envelope protein of SARS-CoV-2 and the nucleocapsid protein genes. The E-gene was detected in 5 out of 6 samples at the ICU-COVID-19 ward and in 5 out of 7 samples at the ward-COVID-19. Similarly, in the non-dedicated facilities, the E-gene was detected in 5 out of 6 samples collected in the ICU and 4 out of 7 samples in the ward. In the necropsy room, 6 out of 7 samples were positive for the E-gene. When both wards were compared, the non-COVID ward presented a significantly higher concentration of the E-gene than in the COVID-19 ward (p = 0.003). There was no significant difference in E-gene concentration between the ICU-COVID-19 and the ICU (p = 0.548). Likewise, there was no significant difference among E-gene concentrations found in the autopsy room versus the ICUs and wards (dedicated or not) (p = 0.245). Our results show the widespread presence of aerosol contamination in different hospital units.
Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography
Authors: Obayashi Masayuki , Yoshimitsu Junko , Suetsugu Daisuke , Shiobara Hajime , Sugioka Hiroko , Ito Aki , Isse Takehi , Ishihara Yasushi , Tanaka Satoru , Tonegawa Takashi
Published: October 2021

We investigated the seismological structure beneath the equatorial Melanesian region, where is tectonically unique because an immense oceanic plateau, a volcanic chain and subduction zones meet. We conducted a multi-frequency P-wave tomography using data collected from an approximately 2-year-long seismic experiment around the Ontong Java Plateau (OJP). High-velocity anomalies were revealed beneath the center of the OJP at a depth of ~ 150 km, the middle-eastern edge of the OJP at depths of 200–300 km, and in the mantle transition zone beneath and around the OJP; low-velocity anomalies were observed along the Caroline volcanic island chain above 450 km depth. These anomalies are considered to be associated with the thick lithosphere of the OJP, remnant dipping Pacific slab, stagnant Pacific slab, and a sheet-like upwelling. The broad stagnant slab was formed due to rapid trench retreat from 48 to 25 Ma until when the OJP with thick lithosphere collided with a subduction boundary of the Pacific and Australian plates. This collision triggered slab breakoff beneath the arc where the dipping slab remained. The stagnant Pacific slab in the mantle transition zone restricted the plume upwelling from the lower mantle causing sheet-like deformed upwelling in the upper mantle.
Fabrication of bifunctional G-quadruplex-hemin DNAzymes for colorimetric detection of apurinic/apyrimidinic endonuclease 1 and microRNA-21
Authors: Huang Xiaodong , He Zhenni , Zhou Kejie , Zhi Huizhen , Yang Jinfei
Published: October 2021

Using apurinic/apyrimidinic endonuclease 1 and microRNA-21 as model targets, colorimetric biosensors are fabricated with long loop G-quadruplex-hemin DNAzymes that are developed to recognize targets and generate signals.
Passive targeting of high-grade gliomas via the EPR effect: a closed path for metallic nanoparticles?
Authors: Caro Carlos , Avasthi Ashish , Paez-Muñoz Jose M. , Pernia Leal Manuel , García-Martín María L.
Published: October 2021

Passive targeting by the EPR effect of long-circulating metallic NPs to GBMs is highly inefficient and limited to sizes ≤50 nm. This is mainly attributable to the restraints imposed by the BBTB, yet other factors are likely involved, such as NP stiffness.
Modular assembly and encoding strategies for dual-display DNA-encoded chemical libraries
Authors: Oehler Sebastian , Plais Louise , Bassi Gabriele , Neri Dario , Scheuermann Jörg
Published: October 2021

Modular assembly methodologies of DNA-encoded chemical libraries featuring dual-display of organic molecules.
Amphiphilic DNA nanostructures for bottom-up synthetic biology
Authors: Rubio-Sánchez Roger , Fabrini Giacomo , Cicuta Pietro , Di Michele Lorenzo
Published: October 2021

Here we review our recent efforts, and those of others, on the construction of biomimetic DNA nanostructures that imitate biological structures and functionalities, and could serve as a generalised platform for engineering artificial cellular systems.
Photoinduced azobenzene-modified DNA dehybridization: insights into local and cooperativity effects from a molecular dynamics study
Authors: Barbosa Nuno , Sagresti Luca , Brancato Giuseppe
Published: October 2021

Highlighting the local and cooperativity effects played by azobenzene functional units tethered to a 10-mer DNA duplex upon light-triggered dehybridization.
Selective nanomolar electrochemical detection of serotonin, dopamine and tryptophan using TiO2/RGO/CPE – influence of reducing agents
Authors: Joseph Teena , Thomas Jasmine , Thomas Tony , Thomas Nygil
Published: October 2021

TiO2/RGO nanocomposites were synthesisedviaa simple one-pot hydrothermal method and used as a modifier in carbon paste electrode for the sensitive determination of serotonin.
Laser-induced deposition of copper from deep eutectic solvents: optimization of chemical and physical parameters
Authors: Shishov Andrey , Gordeychuk Dmitry , Logunov Lev , Levshakova Aleksandra , Andrusenko Elena , Chernyshov Ivan , Danilova Elena , Panov Maxim , Khairullina Evgeniia , Tumkin Ilya
Published: October 2021

Fabrication of conductive copper structures on the surface of various dielectric materials is quite important in many fields of science.
Fluorescent N-functionalized carbon nanodots from carboxymethylcellulose for sensing of high-valence metal ions and cell imaging
Authors: Liu Zhenzhen , Li Runsen , Li Yan , Zhou Jingpeng , Gong Yumei , Shi Haiqiang , Guo Yanzhu , Li Haiming , Wang Zhiwei , Zhang Fengshan
Published: October 2021

N-CDs were synthesized using simple and fast one-pot hydrothermal treatment, and were successfully applied as sensors for the selective detection of environmental high-valence metal ions and cellular imaging.
Regioselective formylation of rhenium-oxo and gold corroles: substituent effects on optical spectra and redox potentials
Authors: Einrem Rune F. , Jonsson Einar Torfi , Teat Simon J. , Settineri Nicholas S. , Alemayehu Abraham B. , Ghosh Abhik
Published: October 2021

Vilsmeier–Haack formylation of ReO and Au meso-triarylcorroles over 16–18 hours affords moderate to good yields (47–65%) of the ReO-3-formyl and Au-3,17-diformyl derivatives in a highly regioselective manner.
Comparative study of photoinduced surface-relief-gratings on azo polymer and azo molecular glass films
Authors: Li Xu , Huang Hao , Wu Bing , Liao Chuyi , Wang Xiaogong
Published: October 2021

A representative azo polymer (BP-AZ-CA) and a typical azo molecular glass (IAC-4) were studied for their surface-relief-grating formation behavior to provide a deep understanding of the clear distinction between these two types of glassy material.
Na4PMo11VO40-catalyzed one-pot oxidative esterification of benzaldehyde with hydrogen peroxide
Authors: Vilanculo Castelo Bandane , José da Silva Márcio
Published: October 2021

The activity of the sodium salts of vanadium-doped phosphomolybdic acid was assessed in the oxidative esterification reaction of benzaldehyde with hydrogen peroxide in alkyl alcohol solutions.
Capturing tumour heterogeneity in pre- and post-chemotherapy colorectal cancer ascites-derived cells using single-cell RNA-sequencing
Authors: Poonpanichakul Tiraput , Shiao Meng-Shin , Jiravejchakul Natnicha , Matangkasombut Ponpan , Sirachainan Ekaphop , Charoensawan Varodom , Jinawath Natini
Published: October 2021

Malignant ascites is an abnormal accumulation of fluid within the peritoneal cavity, caused by metastasis of several types of cancers, including colorectal cancer (CRC). Cancer cells in ascites reflect poor prognosis and serve as a good specimen to study tumour heterogeneity, as they represent a collection of multiple metastatic sites in the peritoneum. In the present study, we have employed single-cell RNA-sequencing (scRNA-seq) to explore and characterise ascites-derived cells from a CRC patient. The samples were prepared using mechanical and enzymatic dissociations, and obtained before and after a chemotherapy treatment. Unbiased clustering of 19,653 cells from four samples reveals 14 subclusters with unique transcriptomic patterns in four major cell types: epithelial cells, myeloid cells, fibroblasts, and lymphocytes. Interestingly, the percentages of cells recovered from different cell types appeared to be influenced by the preparation protocols, with more than 90% reduction in the number of myeloid cells recovered by enzymatic preparation. Analysis of epithelial cell subpopulations unveiled only three out of eleven subpopulations with clear contraction after the treatment, suggesting that the majority of the heterogeneous ascites-derived cells were resistant to the treatment, potentially reflecting the poor treatment outcome observed in the patient. Overall, our study showcases highly heterogeneous cancer subpopulations at single-cell resolution, which respond differently to a particular chemotherapy treatment. All in all, this work highlights the potential benefit of single-cell analyses in planning appropriate treatments and real-time monitoring of therapeutic response in cancer patients through routinely discarded ascites samples.
Conquer by cryo-EM without physically dividing
Authors: Lander Gabriel C. , Glaeser Robert M.
Published: October 2021

This mini-review provides an update regarding the substantial progress that has been made in using single-particle cryo-EM to obtain high-resolution structures for proteins and other macromolecules whose particle sizes are smaller than 100 kDa. We point out that establishing the limits of what can be accomplished, both in terms of particle size and attainable resolution, serves as a guide for what might be expected when attempting to improve the resolution of small flexible portions of a larger structure using focused refinement approaches. These approaches, which involve computationally ignoring all but a specific, targeted region of interest on the macromolecules, is known as ‘masking and refining,' and it thus is the computational equivalent of the ‘divide and conquer' approach that has been used so successfully in X-ray crystallography. The benefit of masked refinement, however, is that one is able to determine structures in their native architectural context, without physically separating them from the biological connections that they require for their function. This mini-review also compares where experimental achievements currently stand relative to various theoretical estimates for the smallest particle size that can be successfully reconstructed to high resolution. Since it is clear that a substantial gap still remains between the two, we briefly recap the areas in which further improvement seems possible, both in equipment and in methods.
A Self-Managed Internet Parent Training Program for Interactive Storybook Reading: Extension to a Public School Setting
Authors: Bellon-Harn Monica L. , Morris Lekeitha R. , Jones Ashtyn
Published: October 2021

Purpose:

This research note evaluated the collaboration, recruitment, enrollment processes, as well as outcomes of an online, self-managed parent training program (Success With Stories [SWS]) concurrent with a Head Start school curriculum.

Method:

This case examination presents the research processes used to examine an online program concurrent with Head Start school programming. Challenges, outcomes, and next steps in the process were evaluated. The engagement of parents who completed the program was examined.

Results:

Collaborative processes were developed, and recruitment strategies were initiated. Of the 92 parents who expressed immediate interest, 38 registered and 16 consented but only seven completed the program. Of the parents who completed the program, survey data revealed high levels of parent satisfaction, motivation, and perceived competence.

Conclusions:

Results indicate a breakdown in the recruitment, enrollment, and completion processes. Results indicate that SWS has promised to address target areas with the intended audience. However, online interventions are only useful if they are accessed and completed. Future directions to increase program completion are discussed.
Microevolutionary relationships between biotypes of Elymus confusus, E. peschkovae, and E. sibiricus (Poaceae) according to hybridization and sequencing of the nuclear gene GBSS1 (waxy)
Authors: Agafonov Alexander V. , Emtseva Maria V. , Shabanova (Kobozeva) Elena V.
Published: October 2021

According to descriptions, the Siberian species E. peschkovae and E. confusus differ in the presence or absence of trichomes on lemma and rachilla surfaces only. Two methods were used for study microevolutionary relationships between these species: hybridization of biotypes from different locations and analysis of nucleotide sequences of the low-copy nuclear gene GBSS1. Created and grown hybrids in combinations AMU-8804 × BER-0807 and AMU-8804 × BUK-1109 showed complete seed sterility in two field vegetations. Taking into account wide species areas, 3 hybrids were created between Magadan biotypes from a common habitat in the combination E. confusus MOL1887 × E. peschkovae MOL-1882. The plants showed seed fertility (SF) of 0–3 %. This result does not obscure the possibility to assess SF in the F2 generation and the character of inheritance of diagnostic traits. A comparative study of the GBSS1 gene sequences in accessions was carried out in comparison with clones of reference species. Differentiation of clones by the St2 subgenome in E. confusus, E. peschkovae, E. sibiricus and E. caninus did not reveal a clear relationships between the species. Meanwhile, a certain species specificity for the H1 subgenome was noted, confirming the existence of microevolutionary isolation of these species.
Productivity characteristics of F1 ornamental progenies between Fragaria × ananassa Duchesne ex Rozier. and Potentilla nepalensis Hook
Authors: Ambros Elena , Novikova Tatyana
Published: October 2021

The current study presents the results of the evaluation of the productivity characteristics of pink-flowered F1 progenies obtained as a result of hybridization between Fragaria × ananassa Duchesne ex Rozier. and Potentilla nepalensis Hook. Based on the selection results, a hybrid fund of four promising pink-flowered strawberries forms with increased winter hardiness was created. The samples possess stable fruit crop, form plentiful flower stalks, form rather large fruits with good taste, and are appropriate for further inclusion in breeding programs in order to obtain a culture of decorative and fruit purposes in the conditions of the Siberian region.
Ontogenetic structure of Ziziphora interrupta (Lamiaceae) coenopopulations in Tajikistan
Authors: Cheryomushkina Vera , Bobokalonov Kobil , Boboev Mariyo , Kurochkina Natalia
Published: October 2021

The structure of five Ziziphora interrupta coenopopulations in Tajikistan was described in the article. It was found that most coenopopulations are stable, have a centered ontogenetic spectrum with a maximum on mature generative individuals. This is due to the slow rates rates of plant development in the middle and fast at the beginning and end of ontogenesis. The deviation from the typical centered spectrum is associated with the irregularity of seed renewal and the polyvariant ontogeny of individuals growing on mobile substrates and steepness of slopes. The right-sided spectrum is formed as a result of anthropogenic impact (collection of medicinal raw materials), what leads to a gradual aging of the coenopopulation and its loss from the community.
Evaluation of coenopopulations of some nemoral species in pine types of communities
Authors: Dushina Elena , Shakleina Maria , Belova Ksenia
Published: October 2021

The authors of the article have evaluated the state and structure of coenopopulations of nemoral species using the example of Convallaria majalis L. and Polygonatum odoratum (Mill.) Druce. Three cenopopulations of P. odoratum (CPP.1 – CPP.3) and four of C. majalis (CPC.4 - CPC.7) have been described while studying three quarters of the Medvedsky Bor nature sanctuary. The authors have come to the conclusion that all the studied coenopopulations of P. odoratum and C. majalis were normal juvenile incomplete. Due to the high demand of C. majalis and P. odoratum in soil moisture, their existence in the pine communities of the Medvedsky Bor nature sanctuary is ensured by the presence of green mosses that retain moisture on the substrate surface.
Prospects for the development of electronic databases of the Mangyshlak experimental botanical garden
Authors: Imanbayeva Akzhunis , Belozerov Ivan
Published: October 2021

The paper describes four computer programs (BD-PLANT-KZ, DInCeR, PLANT-EST-KZ and Feno-S) designed at the MEBS in relation to the arid conditions of Mangystau for cadastral registration of plants of natural flora (ex-situ); registration and determination of the introduction value of collection plants (ex-situ); diagnosis of aesthetics of green spaces, registration and statistical processing of phenological observations.
Study of the Cryopreservation Conditions for seed Materials of Chartolepis intermedia Boiss.
Authors: Ishmuratova Margarita , Tleukenova Saltanat , Ramasanov Alibek , Gavrilkova Elena , Ageev Dmitrii
Published: October 2021

For the first time, the depending of germination rate and energy of germination of Chartolepis intermedia seeds, collected in the wild of Karaganda region, from morphology of seeds and conditions of cryopreservation is investigated. The maximum results for viability are fixed for dark-colored average or large seeds. The best results are determined for variant of cryopreservation in plastic container with future defrosting at the room temperature. For the increasing parameters of seed germination we recommended to freeze Chartolepis intermedia seeds with using cryoprotector sucrose in concentration 20%. As the results of the study, we developed algorithm of cryopreservation of Chartolepis intermedia seeds in liquid nitrogen.
Phenolic compounds in taxonomy ofMyricaria longifoliaandMyricaria bracteata(Tamaricaceae)
Authors: Karpova Evgeniya , Davlatov Sayfiddin Kh. , Chernonosov Alexander
Published: October 2021

For the first time, the phenolic profile of poorly studied Siberian species of the genusMyricariaDesv.Myricaria longifolia(Willd.) Ehrenb. was investigated by HPLC and LC-MS/MS in comparison with that of wide-ranging speciesM. bracteataRoyle. 65 quantitative parameters of the phenolic profiles were processed by ANOVA and principal component analysis (PCA). The results suggest that the distinction between the species is mainly determined by the variance in total flavonoids and free quercetin in the leaves. Free gallic and ferulic acids, hyperoside and total phenolics in aqueous ethanol extract, as well as kaempferol and rhamnazin in the hydrolyzed extract contributed to the difference between the species. The significant differences justify the positions of these species in two individual series of the genusMyricariaestablished before. The statistical analysis of the biochemical data allowed us to identify both the characters that determined the distinction between species, and indicators of heterogeneity of the species that varies abnormally (the concentrations of isorhamnetin and rhamnazin, and their ratio).
Monitoring of Tilia cordata Mill. Planting in the conditions of the city of Abacan
Authors: Kazakova Natalia
Published: October 2021

A visual assessment of the condition of Tilia cordata Mill was carried out. for the five-year period from the moment of planting to the present, using the example of the jubilee alley of the city of Abakan in the Chernogorsky Park. It is established that the main factors of negative impact on the state of plantings are: mechanical damage to young plants by park visitors and the influence of arthropods-pests.
Results of the introduction of ornamental peach cultivars from China and Japan
Authors: Komar-Tyomnaya Larisa
Published: October 2021

The article presents the results of a nine-year study of 19 ornamental peach cultivars of Chinese and Japanese origin, introduced to the southern coast of Crimea. Cultivars with high ornamentality, degree and duration of flowering were identified. They are accession into early-medium, medium, mid-late, late and very late flowering groups. Their susceptibility to fungal diseases was determined.
Features development of olive trees during the growing season in the Southern coast of the Crimea
Authors: Korsakova Svetlana , Korsakov Pavel
Published: October 2021

Estimate climatogenic changes in phenorhythms of Olea europaea L. during the growing season in Southern coast of the Crimea carried out. The study used data of olive trees phenological observations and data climatic parameters during 1947–2020. It was established that in the ‘Nikitskaya’ cultivar during studied period of climate change the steady bias tendency to shift to earlier budbreak dates and fruit maturity has been observed since the 80s, the flowering has been since the 90s of the XX century, first leaves separated has been since the beginning of the XXI century and it differs in the highest rates. For the last 2001–2020 the tendency to shift earlier spring phenophases of budbreak and first leaves separated has increased 1.5–2 times. Phenological models using as input variable temperature and photoperiod were developed to predict dates beginning of full flowering ‘Nikitskaya’ olive cultivar. Forecast accuracy amount to 2.7–4.1 days. The expected future change those dates to end of XXI century are also shown.
Phenolic profiles of the endemic species Astragalus palibinii Polozhij
Authors: Kotsupiy Olga , Shemetova Tatyana
Published: October 2021

For the first time, the composition and content of phenolic compounds (PC) of plant leaves of an endemic rare species of the Xiphidium Bunge section of the genus Astragalus L. of Siberia – Astragalus palibinii Polozhij was studied by HPLC. 11 compounds of phenolic nature were identified in water-ethanol extracts of A. palibinii leaves: gallic, p-hydroxybenzoic, chlorogenic, caffeic, ferulic, trans-ferulic, cinnamic acids, isoquercitrin, rutin, isoramnetin-3-O-rutinoside and L-epicatechin. The composition of PC in the leaves of plants of three cenopopulations A. palibinii from Khakassia is the same, with the exception of one hydroxycinnamic acid in trace amounts. The content (mg per 100 g DW) of flavonol glycosides in the leaves of A. palibinii plants varies in the range of 0.442–0.907, the content of hydroxycinnamic and hydroxybenzoic acids in the range of 98.5–109.7 and 32.5–83.9, respectively. The quantitative profiles of all the studied groups of PC are characterized by significant variability in the content of individual components. The variability of the content of hydroxycinnamic acids, flavonoids and hydroxybenzoic acids was determined as very low, medium and increased, respectively.
Genetic analysis of Rhaponticum carthamoides (Asteraceae) during restoration of natural populations in the Altai Republic
Authors: Kuban Irina , Zhmud Elena , Achimova Altynai , Williams Natasha , Dorogina Olga
Published: October 2021

Rhaponticum carthamoides (Willd.) Iljin is a rare species for Altai Republic. It possesses medicinal and fodder properties and therefore is considered a valuable resource species. Populations of this species are regularly exposed to anthropogenic impact. The impact factors are harvesting of rhizomes and cattle grazing. We have carried out the restoration of two populations of this species. The seeds for restorative planting were collected from healthy plants in the same populations, at a distance of 10 km or less from the restoration site. The genetic analysis of DNA fragments showed a reliable similarity of genetic diversity in planted and naturally growing individuals in each of the studied populations. Comparison showed that plants in more remote locations, which are less accessible for tourism and economic activities, were characterized by higher genetic diversity.
The resource role of flowering woody plants in increasing the insects biological diversity
Authors: Kuzmina Tatiana , Toropova Elena
Published: October 2021

The aim of the study was to assess the resource role of flowering woody plants in maintaining the biological diversity of insects. The studies were carried out in 2019–2020 in the northern forest-steppe of the Ob region during the flowering period of woody plants from the Oleaceae family of the genus Syringa: S. josikaea J. and S. vulgaris L. Insects were collected by mowing with an entomological net in the crowns and under-crown space. The flowering of plants attracted insects from more than 25 families from 7 orders. The largest number of insects belonged to the order Thysanoptera 79.2%, followed by representatives of the orders Hemiptera (7.1%) and Diptera (6.4%). The entomological faunas of S. josikaea and S. vulgaris differed significantly in their taxonomic composition, insects abundance, and their association with flowering periods. Low coefficients of similarity and high power of the factor “plant species” influence on biological diversity and the insects number were revealed. S. josikaea played a more significant role in maintaining the biological diversity of insects. Research showed that insects are associated with a certain species of woody plant.
Cacalia hastata L.: anti-influenza activity and phytochemical characteristics of extracts
Authors: Lobanova Irina , Filippova Ekaterina , Kotsupiy Olga , Protsenko Maria , Kharina Tatiana , Mazurkova Natalia
Published: October 2021

This is the first study to assess antiviral activity against human influenza virus A/Aichi/2/68 and bird influenza virus A/chicken/Kurgan/05/2005 and phytochemical characteristics of an ethanol extract of Cacalia hastata L. from wild populations growing in the vicinity of Tomsk, Russia (mixed forest). A log10 neutralization index—an indicator of inhibition of virus replication by the extract from C. hastata leaves—was ≤2 lg for each influenza virus. The extract reduced the infectivity of the human influenza virus by 1.5-fold and that of the avian influenza virus by 1.7-fold. The phytochemical characterization of C. hastata (its various organs) showed that the largest amount of the tested biologically active substances is present in leaves and rhizomes.
Present and perspective cultivars of Syringa L. for greening the city of Novosibirsk
Authors: Lyakh Elena M. , Gizhitskaya Svetlana A.
Published: October 2021

There is a need to correct a historical imbalance of ornamental shrubs and, in particular, hybrids and cultivars of genus Syringa L. in the city of Novosibirsk. Recent ambitious projects of reconstruction of the present green areas and creating the new ones have enhanced the relevance of testing the cultivars which have been conducted at the CSBG SB RAS for 35 years. In order to study further the features of biology and freeze resistance under continental climate of the south of West Siberia, CSBG’s collection was completed with 54 new samples of cultivars of genus Syringa from 5 botanical institutions and nursery gardens located in the different climatic zones.
Floristic diversity of Dagestan florocoenotypes
Authors: Murtazaliev Ramazan
Published: October 2021

The paper provides information on the floristic diversity of the florocenotypes of Dagestan 43 florocenotypes and 3 types of plant communities in anthropogenically altered habitats which are combined into three groups have been identified. It is registered that the most floristically rich florocoenotypes in the lowlands and in the zone of low foothills are shrub steppes (498 species), xerophilous forests and light forests of the Mediterranean type (462), forbs dry steppes of foothills (431) and herbcereal dry meadows of foothills (334), and in the mountain areas: polyurus vegetation (499 species), steppe after forest meadows (381), mixed deciduous forests (362), subalpine meadows (312) and xerophytic lithophyton with 310 species. Floristically poor florocenotypes are aquatic vegetation of mountain lakes with 14 species, vegetation of water bodies (53 species), precaspian floodplains (67) and precaspian curtain meadows (78 species). During the analysis of the floristic similarity, the florocoenotypes were combined into several clades, which we conditionally distinguished into the following groups: desert, hydrophytic, mesophytic, steppe, and arid.
Conservation status of the current state of cryptogamous diversity in Mongolia
Authors: Ochirbat Enkhtuya
Published: October 2021

In recent years, cryptogamous biodiversity and scop their areal in Mongolia have begun to decline due to human activities, global warming and desertification, and have become one of the reasons for the threat of their extinction. At the regional level, a study was carried out to determine their conservation status in accordance with the criteria of the International Union for the Conservation of Nature and Natural Resources. First of all, according to the assessment results, 221 species (5.0%) need protection.
Taxonomic analysis of the family Boraginaceae in the “Flora of Uzbekistan”
Authors: Ovchinnikova Svetlana , Tajetdinova Dilorom , Tojibaev Komiljon
Published: October 2021

As a result of the studies, it was revealed that on the territory of Uzbekistan Heliotropiaceae family is represented by 2 genera and 15 species and Boraginaceae family is represented by 31 genera and 118 species, distributed in 10 tribes. The largest number of species is represented by the genera from the tribes Eritirchieae (31) and Cynoglosseae (25). Tribe Lithospermeae (21) is distinguished by specificity of the species composition. The most ancient tribes Boragineae (8), Echieae (3), Trichdesmeae (3) are represented by a small number of taxa.
Phenolic compounds of Bassia prostrata (Chenopodiaceae)
Authors: Petruk Anastasia , Pankova Tatyana , Osmonali Bektemir , Lomonosova Maria
Published: October 2021

The composition and content of phenolic compounds in plants of the polymorphic species Bassia prostrata (Chenopodiaceae) from geographically distant populations were studied by high-performance liquid chromatography. The material for the study was the aboveground part of the plant. The plants were collected in the flowering phase in Russia (Novosibirsk region, Republic of Tyva, Khakassia, Buryatia, Altai), Kazakhstan, Armenia. The phenolic compounds were extracted by double extraction with 70% ethanol. Component composition of the phenolic complex was investigated by Agilent 1200 chromatograph. Eleven phenolic compounds, including isoquercitrin, kaempferol-3-glycoside, isoramnetin-3-rutinoside, and luteolin were found in the composition. The quantitative content of each compound could vary from 0.1 to 10.8 mg/g in different populations. Chemotypes were determined for the qualitative and quantitative content of phenolic compounds
Some repeated inventory results of the Putorana plateau vascular flora
Authors: Pospelov Igor N. , Pospelova Elena B.
Published: October 2021

Resulting generalization of herbarium and literature data and our own observations, a list of vascular plants growing on Putorana plateau territory was compiled, including 736 species (without adventive). The history of the plateau flora study since the 70s of the last century is described. The analysis of geographical and ecological-coenotic structure of the flora is carried out, according to the results of which it can be attributed to the hypoarctic type. The cluster analysis of the flora let to distinguish 3 clusters within the territory – the eastern one, with the flora of the moderately hypoarctic subtype, the central one and the southwestern one, the flora of which belongs to the hypoarcto-boreal subtype. Considerations concerning the history of the formation of the plateau flora are presented. Plant invasion on the Putorana plateau occurred both from the north, where Arctic species penetrated into the highlands, and from the south and west – these are boreal species mainly of the Eurasian and Asian fractions. A certain role in the formation of the flora is played by historical factors, especially the impact of the occurrence and melting of glaciations, which differ in different parts of the plateau.
Taxonomic analysis of flora diversity in Daursky Biosphere reserve
Authors: Saraeva Lyudmila
Published: October 2021

The article presents a taxonomic analysis of the Daursky reserve’s flora. 634 species and subspecies of vascular plants (including 608 aboriginal and 30 adventive) have been identified, they belong to 290 genera and 74 families. The leading families amount to 476 species of aboriginal flora (75% of total number) and 149 genera (23 %). The taxonomic spectre is headed by the families Asteraceae, Poaceae, Fabaceae, Rosaceae, Cyperaceae. The most part of the species are of the genera Carex, Artemisia, Potentilla. The adventives flora includes 30 species from 22 genera and 15 families or 5% of the reserve’s flora composition. The largest number of species is registered in the families Chenopodiaceae and Poaceae. In the flora of the Daursky reserve 28 species of vascular plants are identified that are listed on the Red Books of the Russian Federation and Zabaikalsky krai. The area of the Daursky reserve (2% of the territory of Zabaikalsky krai) has a high level of biological diversity (it conserves 37% of the flora richness of Zabaikalsky krai), representativeness, special nature-protecting value and significance.
A monopodial rosette model of shoot formation as a program of secondary-aquatic grasses appearing
Authors: Savinykh Natalya , Shabalkina Svetlana
Published: October 2021

On the basis of comparative morphological analysis of the structure of life forms the concept “key biomorph” is offered; it is a mien of a plant which reflects adaptation to the conditions of a definite habitat (a static aspect, a model) and a definite stage in evolutional changes of biomorphs (a dynamical / evolutional aspect). The paper shows a comparative morphological range of key biomorphs in accordance with a monopodial rosette model of shoot formation per gradient of moisture increase in the direction: a floodplain meadow – shores, shore fronts – the water line – a water body. Polygonum bistorta is considered the original key biomorph, changes in it could occur in three lines: 1) Polygonum bistorta – Butomus umbellatus – Nuphar lutea; 2) Polygonum bistorta – Scirpus lacustris – Eleocharis palustris; 3) Polygonum bistorta – Limosella aquatica – Stratiotes aloides. It seems that appearing of secondary-aquatic grasses with a monopodial rosette model of shoot formation was provided by the following modes of morphological evolution: deviation on the shoot level; abbreviation of the bud stage in shoot formation, in forming a part of the shoot (inflorescence), in the anatomic structure of the shoot and the ontogenesis of the original plant; prolongation of the bud phase in shoot development and ontogenesis of the genet.
The specific features of the reproductive biology of the rare species Gueldenstaedtia monophilla Fisch. (Fabaceae)
Authors: Selyutina Inessa , Konichenko Elena , Igay Natalia , Darikhand Davaajav
Published: October 2021

The seed production of the rare species Gueldenstaedtia monophylla has been investigated in 19 coenotic populations in the territories of Russia (Central Altai) and Mongolia (the north-western part). G. monophylla reproduces exclusively by seeds and is characterized by the low number and density of the plants in the populations. Its populations have a high proportion of generative plants: from 31 to 84% from the total number of the plants. The plants of G. monophylla have a small number of generative shoots, varying from 1 to 6 per plant. The number of flowers on the plants is low, too, and varies in the populations on average from 1.2 to 15.3 per plant. The potential seed production (PSP) varies considerably from 13.5 to 308.6 ovules per plant. The real seed production is much lower, to constitute from 6.2 to 74.5 seeds per plant. The low seed production, fructification that occurs not every year, and scanty populations make the species vulnerable.
The history of the introduction of peppermint (Mentha × piperitaL.) in Imperial Russia
Authors: Shelepova Olga V. , Tkacheva Ekaterina V. , Golosova Elena V.
Published: October 2021

Peppermint (Mentha × piperitaL.) has been and remains one of the most widely used herbs for medicinal purposes since its discovery. It is used in cosmetics, personal care products, food and pharmaceutical products both because of its taste and aromatic properties. In addition, mint is used for non-medical purposes, which makes its cultivation economically feasible. Information about the introduction of peppermint in Russia since the beginning of the XVIII century is scattered and / or incomplete. The purpose of this work is to provide an extensive descriptive overview of the introduction to the cultures of this species in imperial Russia (from the beginning of the XVIII century to the October Revolution). Archival and historical documents on the cultivation of medicinal herbs and the development of peppermint culture in Imperial Russia, virtual herbariums of the V.L. Komarov Botanical Institute of the Russian Academy of Sciences and the M.V. Lomonosov Moscow State University were studied.
Agricultural populations of Festuca pratensis (Poaceae) on the coal mining spoils in the forest-steppe of the Kuznetsk Basin, Russia
Authors: Sheremet Natalia , Lamanova Tatiana , Doronkin Vladimir
Published: October 2021

The study of meadow fescue agropopulations was conducted in the agricultural phytocoenoses, established on the leveled coal mining spoils in the forest-steppe zone of the Kuznetsk Basin mining region in Russia. In agrophytocoenoses the fescue is not a dominant species, as in the natural meadows of herbs and fescue, which occupied the area prior to spoiling. However, the presence of the meadow fescue in the newly established plant communities resulted in increasing their biological diversity and improving the forage quality. The species was shown to sustain in agricultural communities on the coal mining spoils for more than 25 years, whereas when sown on the zonal soils it maintains it presence for 4-6 years. The ontogenetic groups of the plant in all communities were found to be dominated by virginile, young and mid-aged generative specimen. By the 25th year of agricultural phytocoenoses development the vitality of the agropopulations decreased on the coal mining spoils, composed of both Quaternary and Permian sediments. The study showed for the first time that meadow fescue is a species with good potential to restore vegetation cover in the areas disturbed by the open coal mining.
New original decorative specimen of common bird cherry
Authors: Simagin Vladimir , Lokteva Anna
Published: October 2021

The northern regions of Russia are characterized by a relatively poor composition of the cultural dendroflora, that due to harsh climatic conditions. To create resistant varieties, it is necessary to attract local highly winter-resistant forms and on their. The northern regions of Russia are characterized by a relatively poor composition of the cultural dendroflora, that due to harsh climatic conditions. To create resistant varieties, it is necessary to attract local highly winter-resistant forms and on their basis to obtain hybrids with foreign species and new samples of Prunus padus L. with better ornamental characteristic to crossing with them.
Assessment of the adaptive potential of the plum-tree to the conditions of the winter period in the northern forest-steppe of the Southern Urals
Authors: Slepneva Tatyana , Makarenko Sergey , Taranau Alexander
Published: October 2021

The results of assessment are presented the stability of 13 sorts of plum-tree P. salicina subsp. ussuriensis Koval. et Kost. to the climatic conditions in the winter period from 2015/16 to 2020/21 in the northern forest-steppe of the Southern Urals. Like the control sort Ural’skaya zolotistaya by high adaptability to the conditions of the winter period are characterized sorts Altajskaya yubilejnaya, Zavet, Pionerka, Sapfir, Seyanec Krasnogo shara, Sodruzhestvo, Sinil’ga, Ural’skie zori, Chernosliv pozdnij. Stable fruiting over the years, regardless of weather conditions, during the flowering period with a yield of 62.0 to 91.6 hundredweight/ha are mark out with an increasing total sort Altajskaya yubilejnaya, Pionerka, Chernosliv pozdnij. The control sort Ural’skaya zolotistaya exceeds the yield of the sort Altajskaya yubilejnaya (91.6 hundredweight/ha), at the level of control the yield of the sorts Sodruzhestvo (71.5 hundredweight/ha), Sapfir (70.0 hundredweight/ha).
Ribes alpinum L. as a unique introduced material for breeding in Russia
Authors: Sorokopudov Vladimir , Patsukova Nadezhda , Sorokopudova Оlga
Published: October 2021

Ribes alpinum L. has all useful properties (optimal combination of vitamins, sugars, organic acids, pectins) and, due to this, it deserves to be introduced into the breeding process. It was found that, in the conditions of the Belgorod region, Alpine currant develops normally and passes all phenological phases. The long-term variation in the timing of the phase onset is 25 days on the average. The studied forms of Ribes alpinum L. belong to phenologically early plants. In the cultivation for decorative purposes in the conditions of the Belgorod region, 5 forms are identified: large-fruited, compact, erect, erect dissected-leaved and spreading. There are 8 Alpine currant varieties (Evrika, Vorskla, Mulatka, Theodor, Dunyasha, Uslada, Krasnyi Schar, Zara) with a complex of economically valuable characteristics.
The effect of soil properties and climate on phytocoenoses biodiversity in the forest-steppe zone of West Siberia
Authors: Syso Alexander I. , Korolyuk Andrey Y. , Smolentsev Boris A.
Published: October 2021

The effect of weather conditions and such soil properties as pH, salt content, as well as different forms of macroand trace elements, on phytocoenoses biodiversity and chemical element contents in the aboveground phytomass was investigated in the forest-steppe zone of the West Siberian plain. Soil chemical element composition and salinity content were found to affect the phytomass content of N, P, K, Na, Ca, Mg, Fe, Mn, Zn, Cu, Sr, Li.
Application of fruit traits to the taxonomy of the genus Geranium L. by means of section Recurvata as an example
Authors: Troshkina Viktoriya I.
Published: October 2021

Using the section Recurvata (Knuth) Novosselova as an example, this article discusses specific features of morphological traits of the mericarp surface in species of the genus Geranium L. and application of these traits to the taxonomy of the genus. It is shown that the traits of the mericarp surface are distinguishing features of subsections and species. The distinguishing features at the subsection level include the presence or absence of crinkles on the mericarp as well as its size. The distinguishing feature at the species level is the type of mericarp pubescence.
Genetic resources of fodder crops in Croatia: current state and future prospects
Authors: Vokurka Aleš , Čupić Tihomir , Sigal Leonarda , Kutnjak Hrvoje , Dujmović Purgar Dubravka , Kereša Snježana , Bolarić Snježana
Published: October 2021

Plant breeding as an important discipline in agriculture started in Croatia during the last decades of XIX century at several institutions and farms, but was mainly focused on arable grains, but to less extent to fodder, and other crops. The efforts in the research, collecting and evaluation of genetic resources of fodder crops started in the second half of XX century, but were interrupted and ceased by the war in 1990-ies, with a part of material being lost. The activities started almost from scratch by establishing the Croatian Gene Bank in early 1990ties that existed only for few years. A new National Plant Gene Bank was established in 2004 as a network working in synergy with the SEEDNet programme, and was directed by National Plant Genetic Resources Programme based on the valid international treaties on biodiversity, and conducted according to good practice in genetic resources maintenance and research, with the support of the Ministry of Agriculture and EU funds. The paper presents the short outline of the research of the genetic resources of fodder crops.