bluuebunny/crossref_metadata_2025_split huggingface dataset:
First Report of Pilidium concavum causing Leaf Necrosis on Fallopia japonica in the United States
Authors: Bruckart W. L. , Eskandari F. M. , Coombs E. M. , Rossman A. Y. , Palm M. E. 
Published: October 2012

Fallopia japonica (Houtt.) Ronse Decr. (= Polygonum cuspidatum Siebold & Zucc.; Japanese knotweed, JKW) is an invasive perennial forb in the Polygonaceae. It has been identified as a target for biological control in many parts of the world, including the United States. Several potted JKW plants in an outdoor study at the Oregon Department of Agriculture, Salem (44.93° N, 122.99° W) developed leaf spots. Samples collected on August 20, 2007, were sent to the FDWSRU for identification of the disease. The necrotic leaf spots were brown and large, 1 to 3 cm in diameter, and in some cases occupying 30% of the leaf area. Both hemispherical and discoid conidiomata with gloeoid spore masses (3) developed in necrotic areas of all leaves placed in moist chambers. Discoid conidiomata had dark, pedicellate bases subtending a fimbriate disc on which pale brown to brown gloeoid conidial masses were produced. Hemispherical conidiomata were black, circular, sessile, and somewhat flattened, within which similar, gloeoid conidial masses were produced. Conidia from each type of conidioma were unicellular, cylindrical to fusiform, hyaline, and 4.5 to 7.2 × 0.9 to 1.8 μm (mean 5.7 × 1.33). Artificial inoculation of 15 plants was made on two occasions with a suspension of 106 conidia per ml, followed by two 16-hr dew periods at 25°C that were separated by an 8-hr “day;” a similar set of 15 non-inoculated plants served as controls each time. Symptoms similar to those in the original sample developed within 2 months after inoculation. The fungus was easily reisolated, and conidia from each type of conidioma produced similar growth on artificial media and similar disease after inoculation. The characteristics of conidial size and distinctly different conidiomata are diagnostic of Pilidium concavum (Desm.) Höhn (3,4). A sequence of the ITS1-5.8S-ITS2 region DNA, extracted using a DNeasy Plant Mini Kit (QIAGEN), was found identical to that of P. concavum from Rosa sp. (BPI 1107275; GenBank Accession No. AY487094), using BLAST. This isolate, FDWSRU 07-116, has been deposited in the US National Fungus Collection (BPI 883546) and at the Centraalbureau voor Schimmelcultures (CBS 132725). Sequence data have been deposited in GenBank (JQ790789). To our knowledge, this is the first report of P. concavum causing disease on a member of the Polygonaceae in North America (1), a disease clearly different from a Japanese Mycosphaerella sp. under consideration for biological control of JKW in the United Kingdom (2). References: (1) D. F. Farr, and A. Y. Rossman. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. Retrieved from http://nt.ars-grin.gov/fungaldatabases/ , May 15, 2012. (2) D. Kurose et al. MycoSci. 50:179, 2009. (3) M. E. Palm, Mycologia 83:787, 1991. (4) A. Y. Rossman, et al. Mycol. Progr. 3:275, 2004.
First Report of Bhendi yellow vein mosaic virus Associated with Yellow Vein Mosaic of Okra (Abelmoschus esculentus) in Thailand
Authors: Tsai W. S. , Shih S. L. , Lee L. M. , Wang J. T. , Duangsong U. , Kenyon L. 
Published: October 2012

A disease of okra (Abelmoschus esculentus) causing yellowing veins and mosaic on leaves and fruit has emerged in Thailand. Incidences of 50 to 100% diseased plants were observed in fields in Kanchanaburi and Nakhon Pathom provinces in 2009 and 2010, respectively. Leaf samples were collected from three and four diseased plants in Kanchanaburi and Nakhon Pathom, respectively. All seven samples tested positive for begomovirus by PCR using universal primer pair PAL1v1978B/PAR1c715H (3). One sample from Kanchanaburi also tested positive by ELISA using Okra mosaic virus (Genus Tymovirus) antiserum (DSMZ, Braunschweig, Germany). When the nucleotide sequences of the 1.5 kb begomovirus PCR products were compared they were found to share 99.1 to 99.5% identity with each other, and 97.5 to 97.7% identity to Bhendi yellow vein mosaic virus Okra isolate from India (GenBank Accession No. GU112057; BYVMV-[IN: Kai:OY: 06]). The complete DNA-A sequence for a Kanchanaburi isolate (JX678967) was obtained using abutting primers WTHOK6FL-V/-C (WTHOK6FL-V: 5′-GCGAAGCTTAGATAACGCTCCTT-3′; WTHOK6FL-C: 5′-TCCAAGCTTTGAGTCTGCAACGT-3′), while that of a Nakhon Pathom isolate (JX678966) was obtained with primers WTHOK6FLV/WTHOK2FL-C (WTHOK2FL-C: 5′-TCCAAGCTTTGAGTCTGCATCGT-3′). The DNA-A sequences of both isolates are 2,740 nucleotides in length and share 99.6% identity. Each has the geminivirus conserved sequence (TAATATTAC), two open reading frames (ORFs) in the virus sense (V1 and V2) and four in the complementary sense (C1 to C4). Based on BLASTn searching GenBank and sequence analysis using MegAlign (DNASTAR), both DNA-A sequences have greatest nucleotide identity (96.2 to 96.4%) with BYVMV-[IN: Kai:OY: 06] from India. Also, BYVMV-associated betasatellite DNA (1.4 kb) was detected in all begomovirus-positive samples, except one sample from Nakhon Pathom (1). However, no virus DNA-B was detected in any of the samples using either general detection primer pair DNABLC1/DNABLV2 or DNABLC2/DNABLV2 (2). Okra infected with BYVMV has been reported in South Asia in Bangladesh, India, and Pakistan. To the best of our knowledge, this is the first report of BYVMV associated with Okra Yellow Vein Mosaic Disease in Southeast Asia. Since fruits with symptoms are regarded as low quality and have little market value, even low incidence of the disease is likely to cause significant reductions in marketable yield. Strategies for managing BYVMV in okra in South and Southeast Asia should be sought, including the breeding and selecting of resistant varieties. References: (1) R. W. Briddon et al. Mol. Biotechnol. 20:315, 2002. (2) S. K. Green et al. Plant Dis. 85:1286, 2001. (3) W. S. Tsai et al. Plant Pathol. 60:787, 2011.
Deciphering Systemic Wound Responses of the Pumpkin Extrafascicular Phloem by Metabolomics and Stable Isotope-Coded Protein Labeling
Authors: Gaupels Frank , Sarioglu Hakan , Beckmann Manfred , Hause Bettina , Spannagl Manuel , Draper John , Lindermayr Christian , Durner Jörg 
Published: October 2012

Abstract
In cucurbits, phloem latex exudes from cut sieve tubes of the extrafascicular phloem (EFP), serving in defense against herbivores. We analyzed inducible defense mechanisms in the EFP of pumpkin (Cucurbita maxima) after leaf damage. As an early systemic response, wounding elicited transient accumulation of jasmonates and a decrease in exudation probably due to partial sieve tube occlusion by callose. The energy status of the EFP was enhanced as indicated by increased levels of ATP, phosphate, and intermediates of the citric acid cycle. Gas chromatography coupled to mass spectrometry also revealed that sucrose transport, gluconeogenesis/glycolysis, and amino acid metabolism were up-regulated after wounding. Combining ProteoMiner technology for the enrichment of low-abundance proteins with stable isotope-coded protein labeling, we identified 51 wound-regulated phloem proteins. Two Sucrose-Nonfermenting1-related protein kinases and a 32-kD 14-3-3 protein are candidate central regulators of stress metabolism in the EFP. Other proteins, such as the Silverleaf Whitefly-Induced Protein1, Mitogen Activated Protein Kinase6, and Heat Shock Protein81, have known defensive functions. Isotope-coded protein labeling and western-blot analyses indicated that Cyclophilin18 is a reliable marker for stress responses of the EFP. As a hint toward the induction of redox signaling, we have observed delayed oxidation-triggered polymerization of the major Phloem Protein1 (PP1) and PP2, which correlated with a decline in carbonylation of PP2. In sum, wounding triggered transient sieve tube occlusion, enhanced energy metabolism, and accumulation of defense-related proteins in the pumpkin EFP. The systemic wound response was mediated by jasmonate and redox signaling.
Magnetic resonance imaging findings and outcome of neuro‐Behçet's disease: the predictive factors
Authors: Farahangiz Siamak , Sarhadi Sirous , Safari Anahid , Borhani‐Haghighi Afshin 
Published: October 2012

AbstractAimTo investigate MRI findings that may predict unfavorable outcomes in the patients with neuro‐Behçet's disease.Subjects and MethodsAll consecutive patients referred from 2002 to 2009 to the Behçet Clinic at Nemazee Hospital, Shiraz, Iran, who fulfilled International Study Group criteria for Behçet's disease and diagnosed as having neuro‐Behçet's disease, were enrolled into this study. Characteristics of initial brain MRI were studied in patients with different courses of neuro‐Behçet's disease.ResultsInitial MRIs of 58 patients (31 women) with a mean ± SD age of 38.9 ± 9.7 years were reviewed. Forty‐nine (84%) patients had parenchymal and nine (16%) had non‐parenchymal neuro‐Behçet's disease. Of those patients with parenchymal neuro‐Behçet's disease, 15 (31%) had monophasic, 13 (27%) polyphasic and 10 (20%) progressive courses; 11 (22%) had only headache attributed to Behçet's disease. The most common sites of involvement in patients with parenchymal neuro‐Behçet's disease were periventricular and superficial cerebral white matter, midbrain and pons, respectively. Of those with parenchymal involvement, 12 (24%) had extension of lesions, seven (14%) had contrast enhancement, 12 (24%) had black holes and five (10%) had brainstem atrophy. Patients with a progressive course had a significantly (P = 0.017; OR = 18, 95% CI: 1.7–19.1) higher rate of brainstem atrophy than those with a non‐progressive course (monophasic or polyphasic).ConclusionPresence of brainstem atrophy in the initial MRIs may predict a progressive course in patients with neuro‐Behçet's disease.
Omega‐3 fatty acids deficiency aggravates glutamatergic synapse and astroglial aging in the rat hippocampal CA1
Authors: Latour Alizée , Grintal Barbara , Champeil‐Potokar Gaelle , Hennebelle Marie , Lavialle Monique , Dutar Patrick , Potier Brigitte , Billard Jean‐Marie , Vancassel Sylvie , Denis Isabelle 
Published: October 2012

SummaryEpidemiological data suggest that a poor ω3 status favoured by the low ω3/ω6 polyunsaturated fatty acids ratio in western diets contributes to cognitive decline in the elderly, but mechanistic evidence is lacking. We therefore explored the impact of ω3 deficiency on the evolution of glutamatergic transmission in the CA1 of the hippocampus during aging by comparing 4 groups of rats aged 6–22 months fed ω3‐deficient or ω3/ω6‐balanced diets from conception to sacrifice: Young ω3 Balanced (YB) or Deficient (YD), Old ω3 Balanced (OB) or Deficient (OD) rats. ω3 Deficiency induced a 65% decrease in the amount of docosahexaenoic acid (DHA, the main ω3 in cell membranes) in brain phospholipids, but had no impact on glutamatergic transmission and astroglial function in young rats. Aging induced a 10% decrease in brain DHA, a 35% reduction of synaptic efficacy (fEPSP/PFV) due to decreased presynaptic glutamate release and a 30% decrease in the astroglial glutamate uptake associated with a marked astrogliosis (+100% GFAP). The ω3 deficiency further decreased these hallmarks of aging (OD vs. OB rats: −35% fEPSP/PFV P < 0.05, −15% astroglial glutamate uptake P < 0.001, +30% GFAP P < 0.01). This cannot be attributed to aggravation of the brain DHA deficit because the brains of OD rats had more DHA than those of YD rats. Thus, ω3 deficiency worsens the age‐induced degradation of glutamatergic transmission and its associated astroglial regulation in the hippocampus.
Intraperitoneal delivery of a small interfering RNA targeting NEDD1 prolongs the survival of scirrhous gastric cancer model mice
Authors: Fujita Takeshi , Yanagihara Kazuyoshi , Takeshita Fumitaka , Aoyagi Kazuhiko , Nishimura Takao , Takigahira Misato , Chiwaki Fumiko , Fukagawa Takeo , Katai Hitoshi , Ochiya Takahiro , Sakamoto Hiromi , Konno Hiroyuki , Yoshida Teruhiko , Sasaki Hiroki 
Published: October 2012

The prognosis of patients with advanced diffuse‐type gastric cancer (GC), especially scirrhous gastric cancer (SGC) remains extremely poor. Peritoneal carcinomatosis is a frequent form of metastasis of SGC. With survival rates of patients with peritoneal metastasis at 3 and 5 years being only 9.8% and 0%, respectively, development of a new treatment is urgently crucial. For such development, the establishment of a therapeutic mouse model is required. Among the 11 GC cell lines we examined, HSC‐60 showed the most well‐preserved expression profiles of the Hedgehog and epithelial‐mesenchymal transition pathways found in primary SGCs. After six cycles of harvest of ascitic tumor cells and their orthotopic inoculation in scid mice, a highly metastatic subclone of HSC‐60, 60As6 was obtained, by means of which we successfully developed peritoneal metastasis model mice. The mice treated with small interfering (si) RNA targeting NEDD1, which encodes a gamma‐tubulin ring complex‐binding protein, by the atelocollagen‐mediated delivery system showed a significantly prolonged survival. Our mouse model could thus be useful for the development of a new therapeutic modality. Intraperitoneal administration of siRNAs of targeted genes such as NEDD1 could provide a new opportunity in the treatment of the peritoneal metastasis of SGC.
Human umbilical vein endothelial cell vaccine therapy in patients with recurrent glioblastoma
Authors: Tanaka Minoru , Tsuno Nelson Hirokazu , Fujii Tomoyuki , Todo Tomoki , Saito Nobuhito , Takahashi Koki 
Published: October 2012

We aimed to assess the clinical efficacy of glutaraldehyde‐fixed human umbilical vein endothelial cell (HUVEC) vaccine for the treatment of patients with recurrent glioblastoma. Patients of a HUVEC vaccine group received intradermal injections of 5 × 107 HUVEC weekly during the first month, and every 2 weeks from the second month, until progression of the disease was observed. Salvage treatment consisted of multimodal chemotherapy, radiation, including gamma‐knife therapy, and/or repeated surgery, when feasible. Hazard ratios for death were calculated using a Cox model. A total of 17 patients with recurrent glioblastoma were enrolled in this study. All the patients received the initial treatment consisting of maximal safe surgical resection, followed by radiotherapy of 50–80 Gy or more, with concomitant and adjuvant chemotherapy consisting of temozolomide or nimustine (ACNU). A total of 352 vaccinations were performed for the patients of the HUVEC vaccine group (median number of vaccination = 11 doses; range 3–122 doses). The median progression‐free survival and overall survival were 5.5 and 11.4 months, respectively. The median overall survival from the diagnosis was 24.3 months. The HUVEC vaccine therapy significantly prolonged the tumor doubling time and contributed to reducing the tumor growth rate. Hematological adverse reactions due to chemotherapy were recognized: one patient experienced grade III leukocytopenia and one showed grade II lymphocytopenia. Associated with the HUVEC vaccine therapy, a delayed‐type hypersensitivity‐like skin reaction developed at the injection site. The HUVEC vaccine therapy effectively controlled disease progression, without evident adverse effects, except for a delayed‐type hypersensitivity‐like skin reaction at the injection site.
Getting the closer object? An information‐based dissociation between vision for perception and vision for movement in early infancy
Authors: van Wermeskerken Margot , van der Kamp John , Savelsbergh Geert J.P. , von Hofsten Claes 
Published: October 2012

AbstractIn human adults two functionally and neuro‐anatomically separate systems exist for the use of visual information in perception and the use of visual information to control movements (Milner & Goodale,,). We investigated whether this separation is already functioning in the early stages of the development of reaching. To this end, 6‐ and 7‐month‐old infants were presented with two identical objects at identical distances in front of an illusory Ponzo‐like background that made them appear to be located at different distances. In two further conditions without the illusory background, the two objects were presented at physically different distances. Preferential reaching outcomes indicated that the allocentric distance information contained in the illusory background affected the perception of object distance. Yet, infants' reaching kinematics were only affected by the objects' physical distance and not by the perceptual distance manipulation. These findings were taken as evidence for the two‐visual systems, as proposed by Milner and Goodale (), being functional in early infancy. We discuss the wider implications of this early dissociation.
Responses of the functional structure of soil microbial community to livestock grazing in the Tibetan alpine grassland
Authors: Yang Yunfeng , Wu Linwei , Lin Qiaoyan , Yuan Mengting , Xu Depeng , Yu Hao , Hu Yigang , Duan Jichuang , Li Xiangzhen , He Zhili , Xue Kai , van Nostrand Joy , Wang Shiping , Zhou Jizhong 
Published: October 2012

AbstractMicrobes play key roles in various biogeochemical processes, including carbon (C) and nitrogen (N) cycling. However, changes of microbial community at the functional gene level by livestock grazing, which is a global land‐use activity, remain unclear. Here we use a functional gene array, GeoChip 4.0, to examine the effects of free livestock grazing on the microbial community at an experimental site of Tibet, a region known to be very sensitive to anthropogenic perturbation and global warming. Our results showed that grazing changed microbial community functional structure, in addition to aboveground vegetation and soil geochemical properties. Further statistical tests showed that microbial community functional structures were closely correlated with environmental variables, and variations in microbial community functional structures were mainly controlled by aboveground vegetation, soil C/N ratio, and NH4+‐N. In‐depth examination of N cycling genes showed that abundances of N mineralization and nitrification genes were increased at grazed sites, but denitrification and N‐reduction genes were decreased, suggesting that functional potentials of relevant bioprocesses were changed. Meanwhile, abundances of genes involved in methane cycling, C fixation, and degradation were decreased, which might be caused by vegetation removal and hence decrease in litter accumulation at grazed sites. In contrast, abundances of virulence, stress, and antibiotics resistance genes were increased because of the presence of livestock. In conclusion, these results indicated that soil microbial community functional structure was very sensitive to the impact of livestock grazing and revealed microbial functional potentials in regulating soil N and C cycling, supporting the necessity to include microbial components in evaluating the consequence of land‐use and/or climate changes.
In vitro direct plant regeneration and Agrobacterium‐mediated transformation of lucerne (Medicago sativa L.)
Authors: Kumar S. , Tiwari R. , Chandra A. , Sharma A. , Bhatnagar R. K. 
Published: October 2012

AbstractIn vitro direct plant regeneration of lucerne was achieved by simultaneous application of thidiazuron (TDZ) and 6‐benzyladenine (BA) in Murashige and Skoog (MS) medium. Seedlings were germinated and grown for 6 d on growth regulator–containing MS medium. The shoot tip, consisting of the apical meristem along with parts of the cotyledonary leaves and hypocotyl, was then cultured on a medium containing the growth regulator(s). Adventitious budding of the shoot tip was promoted synergistically by treatment with TDZ and BA, and a maximum of thirty‐five shoots per explant was obtained on a medium supplemented with 2 mg L−1 TDZ and 1 mg L−1 BA. Plant regeneration frequency varied from 67 to 93%, and five Indian lucerne cultivars responded well to the regeneration protocol. The Agrobacterium‐mediated transformation frequency from co‐cultivated explants was 13% following multiple shoot induction. Southern analysis of the T0 plants and T1 progenies confirmed stable inheritance of the hpt marker gene. Agrobacterium infection of the explant caused a significant reduction in the plant regeneration frequency (23%) and the number of shoots induced (11) when compared with uninfected explants. A single shoot tip provided sufficient material to regenerate and establish twenty‐seven lucerne plants, whereas only nine plants could be regenerated from an Agrobacterium co‐cultivated explant. This transformation protocol could represent a valuable improvement over existing ones for lucerne.
Different parasite inocula determine the modulation of the immune response and outcome of experimental Trypanosoma cruzi infection
Authors: Borges Diego C. , Araújo Natalia M. , Cardoso Cristina R. , Lazo Chica Javier E. 
Published: October 2012

SummaryDuring infection, the host response develops effector mechanisms to combat the parasite. However, this response can become uncontrolled or regulated by mechanisms that modulate the inflammatory reaction. The number of parasites that infects the host, such as trypomastigotes in Chagas disease, may also influence immune activation and disease pathology. We evaluated the inflammation and immune regulation that follows Trypanosoma cruzi infection with low (300), intermediate (3000) or high (30 000) parasite loads. Our results showed that the load of parasite inoculum influenced disease outcome: the higher the number of parasites in the inoculum, the lower were the survival rates. There was a strong association between parasitism and inflammatory infiltrate in the heart and the parasite inoculum determined cytokine interplay in this tissue, as shown by increased interferon‐γ, tumour necrosis factor‐α, interleukin‐17 (IL‐17) and IL‐23 in the 300 and 30 000 inoculum groups, higher IL‐4 and IL‐10 in the intermediate‐inoculum mice, and elevated IL‐6 production in the heart of mice in the 3000 and 30 000 groups. The number of T cells and antigen‐presenting cells was augmented in the infected groups, especially for the splenic CD4+ CD25+ regulatory T cells expressing CD45RBlow, GITR, PD‐1 and FoxP3 in the group with the highest inoculum. Interestingly, these mice also presented an apparent decrease in CD4+ CD25+ FoxP3+ cells in the cardiac infiltrate, in contrast to the intermediate inoculum group, which showed elevated numbers of these regulatory leucocytes in the heart. Finally, our results demonstrated that parasite load during T. cruzi infection is linked to the response pattern that will result in parasite/inflammation control or tissue damage.