bluuebunny/crossref_metadata_2025_split huggingface dataset:
Beitrag zur Ätiologie des Triebsterbens junger Lärchen der subalpinen Stufe1
Authors: Schnell G. , Kern H. , Müller E. 
Published: June 2007

Abstract Etiologic of shoot dicback of young larches in the subalpine zone. I, Studies to possibles fungi‐infections. Infection experiments with Ascocalyx laricina (Ettlinger) Schläpfer‐Bernhard and research on endophytic fungi of old and young larch trees showed that infection by this particular fungus can be ruled out as the cause of shoot dieback.
Beitrag zur Ätiologie des Triebsterbens junger Lärchen der subalpinen Stufe1
Authors: Schnell G. , Miüller E. , Kern H. 
Published: June 2007

Abstract Etiologic of shoot dieback of young larches in the subalpine zone. II. Abiotic causes. Wet and cool wcatlier during season postpones lignification of die youngest shoots, and effects of early frost causes them to die off. Strong sudden snow gliding (mainly slab avalanche and other avalanches) causes epidermis injuries with subsequent increased transpiration, depending on the degree of metamorphosis of snow crystals.
Induction of rapid and synchronous germination of urediniospores of Melampsora medusae
Authors: Prakash C.S. , Heather W. A. 
Published: June 2007

AbstractA method to obtain high (> 95 %) and uniform germination of urediniospores of Melampsora medusae on a niembrano filter is described. Such levels of gormination are essential in electrophorotie and other physiological studios of rust fungi.
Norway spruce dieback: Occurrence, isolation and biological activity of p‐hydroxy acetophenone and p‐hydroxy acetophenone‐O‐glucoside and their possible roles during stress phenomena
Authors: Hoque E. 
Published: June 2007

AbstractThis paper is an extended form of a short report published previously (Eur. J. For. Path. 14, 1984b). Here, we describe the occurrence, the isolation, the chromatographic comparison, the biological activity, the measurement of concentration of p‐hydroxy acetophenone (p‐HAP) and its O‐glucoside (Picein) by gas chromatography and their possible roles during stress phenomena. The gas chromatographic measurement of p‐HAP and its O‐glucoside (after enzymic hydroluysis) in the current year's shoots and branches showed that the ratio of p‐HAP: p‐HAP‐O‐glucoside is always greater than I in the affected trees and less than I in the healthy trees. The ratio of p‐HAP:p‐HAP‐o‐glucoside was shown to increase with increasing durations of water stress, indicating the involvement of p‐HAP in stress phenomena. p‐HAP was found to be phytotoxic to the 2‐year‐old saplings at a cone, of 500 ppm. p‐HAP caused yellowing and browning of needles, needle‐fall, inhibition of apical dominance (epicotyl, roots) and inhibition of bud‐break in Norway spruce.
Further investigation on the causes of disorder of the coastal vegetation in the park of San Rossore (central Italy)
Authors: Gellini R. , Pantani F. , Grossoni P. , Bussotti F. , Barbolani E. , Rinallo C. 
Published: June 2007

AbstractThe deterioration of the pine‐woods on the tyrrhenian coast of Italy can be ascribed to a synergism between surfactants and sodium chloride. The destruction of epieuticular wax in pine needles has been revealed by the electron microscope. Data on acid rain are reported.
Rickettsien‐ähnliche Bakterien (RLO) in Feinwurzeln erkrankter Fichten unterschiedlichen Alters
Authors: Ebrahim‐Nesbat F. , Heitefuss R. 
Published: June 2007

Abstract Rickettsia‐like organisms (RLO) in fine roots of different age diseased spruce. Rickettsia‐like organisms (RLO) were observed in fine roots of Norway spruce (Picea abies Karst.) with symptoms of forest decline at two sites in the Federal Republic of Germany. Conclusions about the causal relations of RLO to the observed symptoms are however not yet possible.
Some diseases of forest tree seedlings in India caused by Sclerotium rolfsii and Rhizoctonia solani1
Authors: Florence E. J. Maria , Sharma J. K. , Sankaran K. V. , Mohanan C. 
Published: June 2007

AbstractLeaf blight of Bombax ceiba and B. insigne caused by Sclerotium rolfsii and collar rot of B. ceiba and Ailanthus triphysa caused by Rhizoctonia solani are reported for the first time from India.
Infection of roots of Norway spruce (Picea abies) by Heterobasidion annosum
Authors: Johansson M. , Stenlid J. 
Published: June 2007

AbstractWounding of excised roots of Norway spruce [Picea abies (L.) Karst.] caused a rapid accumulation of phenolic compounds, decrease of starch content and of certain enzyme activities in the ray cells. Infection of the wounds by Heterobasidion annosum (Fr.) Bref. intensified these processes, caused oxidation of the phenols, and induced activity of acid phosphatase and β‐glucosidase in the ray cells of the infected area. The reactions were oxygen‐dependent. Intra‐ and extracellular enzymes were detected in the wood‐infecting hyphae. Other wood‐growing fungi caused similar reactions in the wood as H. annosum.
Importance des pourridies dans les régions tempérées
Authors: Delatour C. , Guillaumin J. J. 
Published: June 2007

Abstract Root and butt rots in temperate regions. General characteristies of root and butt rot diseases, so‐called “Pourridies” in French are given, and specific difficulties involved in studing them are discussed. The most important root and butt rot pathogens are reviewed.
Nouvelles methodes de determination des Armillaires europeens: Immunologie et electrophorese en gel de polyacrylamide
Authors: Lung‐Escarmant Brigitte , Mohammed Carroline , Dunez Jean 
Published: June 2007

Abstract New tcehnies to determine European armillarias: immunology and polyaerylamide gel electrophoese. Using the method ELISA, A. mella and A. obsenra have been characterised without recourse to the purilication of antigens specifies to each species.Unidimensional electrophoretic analysis of rhizomorphic and frutbody extraction showed for both organs specific profilex for species bulbosa.
Peut‐on compter sur les mycorhizes pour lutter contre les maladies des plantes ligneuses?
Authors: Perrin R. 
Published: June 2007

Abstract Is it possible to control diseases of woody plants by means of their mycorrhizae? The role of mycorrhizaae as biological detcrrents to soil borne diseases are reviewed from the literature and author's experiments in relation with nature of host plant, of mycorrlizal fungi, soils conditions. Possible mechanisms are discussed. Protective ability of some mycorrhizae appears as a potential, the expression of which depends of environmental factors, Mycorrhizae could be a biological mean to control soil borne diseases since we have a better ecological knowledge of their relationship with biotic components in the soil.
Effects of soil fumigation and inoculation with pure culture of Hebeloma cylindrosporum on survival, growth and ectomycorrhizal development of Norway spruce and douglas fir seedlings
Authors: le Tacon By F. , Bouchard D. , Perrin R. 
Published: June 2007

AbstractIn a bare‐root nursery we have determined the incidence of soil fumigation and mycorrhizal inoculation on survival growth and ectomycorrhizal development of Norway spruce and Douglas fir seedlings. Three experimental designes were installed in 1978, 1981 and 1982.Soil fumigation eliminated or reduced Rbizoctonia solani, Pytbium sp. and probably Fusarium oxysporum propagules. Fumigation improved Norway spruce seedlings performance, particularly in the second year. Douglas fir seedlings seemed less sensitive to soil‐borne pathogens tha Norway spruce seedlings.Two years after inoculation, Hebeloma cylindrosporum increased Norway spruce growth by 40% and Douglas fir growth by 30 % in comparison with seedlings grown in fumigated soil and mycorrhizal with the naturally occurring fungus Thelephora terrestris.Both, fumigation and artificial inoculation increased Norway spruce seedling growth by 110 % and Douglas fir seedling growth by 50 %.
Caractérisation morphologique et biologique des Melampsora spp. pathogènes des pins en Europe
Authors: Desprez‐Loustau Marie‐Laure 
Published: June 2007

Abstract Morphological and biological characterization of pine‐infecting Melampsora spp. in Europe. The main different features between Melampsora pinitorqua and M. larici‐tremulae are described: spore morphology (basidio‐, ccio‐ and telio‐spores), biology (teliospores maturity) and pathogenicity (on larch and pine). The characterization of M. pinitorqua is based on epicotyle infection of pines (P. sylvestris or P. pinaster).
Beobachtungen zum Vorkommen von Armillaria obscura und Armillaria cepistipes an Tanne in Südbayern
Authors: Holdenrieder Von O. 
Published: June 2007

AbstractObservations on the occurrence of Armillaria obscura and Armillaria cepistipes on Silver fir in Southern Bavaria. Armillaria‐fruitbodies on Silver fir (Abies alba) from different localities in Southern Bavaria were identified by mating tests as A. obscura and A. cepistipes. Diploid mycelia could not be determined by the Buller‐phenomenon or fructification in vitro, somatic segregation of haploids by Benomyl also was not successful.
Effects of 2,3,6‐TBA on seed germination, early development, and mortality of Pinus resinosa seedlings1
Authors: Kozlowski T. T. 
Published: June 2007

AbstractThis study shows extreme phytotoxicity of 2,3,6‐trichlorobenzoic acid (2,3,6‐TBA) to Pinus resinosa seedlings in the cotyledon stage of development. 2,3,6‐TBA caused abnormal seedling development and mortality.
Growth and spore germination of Cylindrocarpon destructans in associative cultures with bacteria and actinomycetes1
Authors: Strzelczyk E. , Rózycki H. , Michniewicz M. 
Published: June 2007

AbstractStudies were made on the effect of bacteria and actinomycetes on growth and spore germination of Cylindrocarpon destructans. The effect of bacteria on growth of this fungus as well as on spore germination was statistically not significant. The actinomycetes in general inhibited or had no influence on growth and germination of conidia of C. destructans.
Root rot diseases of Hevea brasiliensis
Authors: Geiger J.‐P. , Nicole M. , Nandris D. , Rio B. 
Published: June 2007

AbstractA study on biochemical mechanisms of the rubber tree aggression by two root rotting fungi Rigidoporus lignosus and Phellinus noxius was carried out. The activity of eight enzymes and their spatial distribution in adult tap root tissues were measured. Finally their origin, host or parasite, and physiological signification in the pathogenic process were discussed.
Root rot diseases of Hevea brasiliensis
Authors: Nicole M. , Geiger J. P. , Nandris D. 
Published: June 2007

Abstract Hevea brasiliensis (rubber tree) differentiates defense reactions against root rot diseases caused by Rigidoporus lignosus and Phellinus noxius. These reactions, described at molecular, cellular and histological levels, rarely enable the tree to resist the fungal attack. Trees which initiate new tissues only survive to the infection.
Biodegradation of Hevea brasiliensis wood by Rigidoporus lignosus and Phellinus noxius1
Authors: Geiger J.‐P. , Rio B. , Nicole M. , Nandris D. 
Published: June 2007

Abstract In vitro wood slats degradation assays reveal that both the white root rot fungus R. lignosus and the brown root rot fungus P. noxius cause a white rot of wood. In vivo (infected tap roots) they cause the same type of decay. Nevertheless lignin determination show the rubber‐tree ability to react against the parasite aggression by increased lignification of tissues.
Zur Anatomic gesunder und “kranker” Feinstwurzeln von Fichten: Meristem und Differenzierungen in Wurzelspitzen und Mykorrhizen
Authors: Kottke I. , Rapp Ch. , Oberwinkler F. 
Published: June 2007

Abstract On the anatomical features of well functioning and “damaged” rootlets of spruce: meristem and differentiation of root apices and mycorrhizae. The root apices of various developmental stages of Picea abies (L.) Karst. are described in detail and the differences between long‐ and short roots discussed.
Spruce bark influenced by SO2
Authors: Kreiner W. , Härtel O. 
Published: June 2007

AbstractInvestigations into SO2 absorption by spruce barks using artificial fumigation have proved that continued immissions of SO2 alter the properties of bark making them capable of accumulating SO2 up to amounts never attainable by barks grown in clean air. This can be recognized by the time lapse considering SO2 absorption and by altered ion exchange as well as buffer capacity. With respect to the availability of the bark extracts for mapping SO2 immissions in the field it is concluded that both conductance and sulphate content of bark extracts represent an integration covering a considerable preceding period being modified by the actual immissions.
Test ?inhibition de ľactivité cambiale du Peuplier par Hypoxylon mammatum: mise au point et application
Authors: Pinon Par J. 
Published: June 2007

Abstract Test of inhibition of cambial activity of poplar by H. mammatum: development and application. A test was developed in vitro in order to estimate the inhibition of hosts’cambium by H. mammatum and applied to a large number of poplar clones. Toxicity of the culture filtrate appears to be selective but not necessarily specific.
Studies of microconidia of Marssonina brunnea and apothecia of Drepanopeziza tremulae
Authors: Spiers A. G. , Hopcroft D. H. 
Published: June 2007

AbstractMicroconidia of M. brunnea were induced in the laboratory on 15 % V8 juice agar and poplar leaf discs. Apothecia of Drepanopeziza tremulae and stromata containing conidia were formed on naturally infected leaves and leaf‐discs. The influence of temperature on apothecial development was investigated. The morphology of apothecia and stromata is described.
The influence of some chemical treatments on cypress canker disease development
Authors: Panconesi A. , Raddi P. 
Published: June 2007

AbstractSix fungicides were applied for 32 months prior to inoculating Cupressus sempervirens L. with Seiridium cardinale (Wag.) Sutton and Gibson. Benomyl and Benomyl + Captafol were partly effective in preventing infection but none of the tested fungicides prevented spread of established infections.
The influence of VA mycorrhizae on the wilting of Albizia procera and Dalbergia sissoo
Authors: Chakravarty P. , Mishra R. R. 
Published: June 2007

AbstractThe effect of pre‐inoculation with VA mycorrhizae on Fusarium wilt of Albizia procera and Dalbergia sissoo was done in a green house trial. Inoculation with Fusarium spp. decreased plant growth compared to noninoculated controls. Mycorrhizal plants were significantly higher than nonmycorrhizal ones. In addition to plant growth, the disease severity caused by Fusarium spp. reduced significantly when inoculated with VA mycorrhizae. The lowest percentage of Fusarium spp. were found on plants when treated with VA mycorrhizae. The population of Fusarium spp. were higher in the rhizosphere of nonmycorrhizal roots. The P concentration in the leaves of mycorrhizal and nonmycorrhizal plants were higher in the absence of Fusarium spp.
Ultrastructural aspects of rubber tree root rot diseases
Authors: Nicole M. , Geiger J. P. , Nandris D. 
Published: June 2007

AbstractThe aggression of Hevea brasiliensis roots by two root‐rot fungi, Rigidoporus lignosus and Phellinus noxius is studied at cellular level. Ultrastructural observations reveal the root penetration and tissues colonization by the fungal hyphae, showing clearly alteration in the host cell wall, leading to the root decay. This paper describes the different mechanisms used by these two fungi in degrading lignified and non lignified tissues.
Comparison of two methods to measure the susceptibility of poplar clones to Xanthomonas populi
Authors: de Kam M. , Heisterkamp S. H. 
Published: June 2007

AbstractThe conventional method of testing susceptibility to Xanthomonas populi by means of leaf‐scar inoculation in September is compared with stipule‐scar inoculation in spring. A method for evaluating the resulting disease expression is presented.
Physiologic specialisation in the hyperparasitism of races of Melampsora larici‐populina by isolates of Cladosporium tenuissimum
Authors: Heather W. A. , Sharma I. K. 
Published: June 2007

AbstractThree isolates of Cladosporium tenuissimum were prepared by culturing a field isolate of this organism separately on three races of Melampsora larici‐populina. In a subsequent experiment, the production of uredinia by these three races on three cultivars of Populus X euramericana was usually lowest in the presence of the isolate of C. tenuissimum which had been cultured on the particular race. This apparent adaptation of the isolates of the hyperparasite to particular races of the rust, i. et. “physiologic specialisation” in the relationship, is confirmed by the significant race x C. tenuissimum isolate term in the ANOVA.
Identification of the fungi associated with damping‐off in the regeneration of Eucalyptus obliqua and E. radiata in a central Victorian forest
Authors: Mwanza E. J. M. , Kellas J. D. 
Published: June 2007

AbstractSoil baiting techniques identified the presence of five fungal genera capable of causing pre‐ and post‐emergent damping‐off in two eucalypt species [Eucalyptus obliqua(messmate stringybark) andE. radiata(narrow leaf peppermint)] under laboratory conditions.
Dotliistroma pini an jungen Fichten (Picea abies)
Authors: Lang Von K. J. 
Published: June 2007

AbstractDotliistroma pini on young spruces (Picca abics). Favorable niicoclimatical conditions and high inlection pressure enable Dothistroma pini to inlect Picea abics. The fungus is able to eomplete his development in the needles of Norway sprtiee by forming fruitbodies with eonidia. Dothistronut pini is for the lirst time found on young Picea abies.
Über das Auftreten von Leucocytospora kunzei bei Pinus griffithii in Parkanlagen der Stadt Basel
Authors: Zinkernagel C. , Flückiger W. 
Published: June 2007

Abstract Occurrence of Leucocytospora kunzei on Pinus griffithii in parks of the City of Basel.
Leucocytospora kunzeii (Sacc.) Urban, the causal agent of a canker disease mainly known in North America, was found on Pinus griffitbii in several public parks of Basel.
Auswaschung phytotoxischer Substanzen aus Blättern kranker und gesunder Buchen ‐ Schäden an der Bodenflora
Authors: Paul Lioba , Schütt P. 
Published: June 2007

AbstractLeaching of phytotoxic substances from foliage of diseased and healthy beeches ‐ damage to ground vegetation. Damage to vegetation under declining beeches gave rise to test the effects of simulated aqueous leachate of beech leaves on 7 wild flower species. In biotests under aseptic conditions leachate of declining beeches affected germination and plant development more than leachate of healthy ones.
Microorganisms associated with canker rots and heart rot of oak
Authors: McCracken F. I. 
Published: June 2007

AbstractPure cultures of the canker‐rot fungi Inonotus hispidus, Phellinus andersonii and Spongipellis pachyodon, were isolated from non‐compartmentalized decay and stain in cankers on Quercus phellos. Hericum erinaceum was isolated from compartmentalized decay columns in Q. phellos in consistent association with imperfect fungi.
Erstnachweis von Lophodermella sulcigena in Polen
Authors: Von Kowalski T. 
Published: June 2007

Abstract First record of Lophodermella sulcigena in Poland. Lophodermella sulcigena (Rostr.) v. Höhn. has been recorded from Pinus sylvestris in Poland. Disease symptoms, morphology of the fungus and possible predisposing factors are described.
Cellular responses of Scots pine (Pinus sylvestris L.) seedlings to simulated summer frost
Authors: Holopainen J. K. , Holopainen Toini 
Published: June 2007

AbstractThe effects of simulated summer night frost on actively growing Scots pine seedlings were studied in environmental plant growth chambers. Exposure to temperatures ranging from −4.5°C to −7.5°C caused ultrastructural alterations in the mesophyll cells of visually healthy cotyledons and primary needles of pine seedlings.
Infection of exotic and Tasmanian native tree and shrub species by the vascular stain fungus Chalara australis
Authors: Kile G. A. 
Published: June 2007

AbstractInoculation of stem pieces and living plants was used to assess the susceptibility of a range of exotic Fagaceous and Tasmanian native tree and shrub species to the vascular stain organism Chalara australis. Development of inoculum on freshly cut stump surfaces of a number of species was also examined. The fungus has a limited host range but may produce inoculum on moribund surface tissues of non host species and is a potential hazard to other Nothofagus species growing both within Australia and elsewhere in the world.
SEM‐studies of the xylem of diseased oak trees growing in the Krotoszyn Plateau1
Authors: Woźny A. , Ratajczyk B. , Savecki R. 
Published: June 2007

AbstractIn a severely damaged Quercus robur stand on the Krotoszyn Plateau wood samples for scanning electron microscopy studies were taken from trunks of diseased trees.Fungal hyphae were frequently found in the vessel elements. Most hyphae were in the samples collected closest to the bark. Apart from the presence of hyphae, many abnormalities were observed in samples from the outer part of the wood.
Identification of Kenyan Armillaria isolates by cultural morphology, intersterility tests and analysis of isozyme profiles
Authors: Mwangi L. M. , Lin D. , Hubbes M. 
Published: June 2007

AbstractThree groups of morphologically distinct isolates were observed among nine Kenyan Armillaria isolates based on their mycelium and rhizomorphs characteristics. Seven of the isolates were interfertile with testers of North American biological species III, VII and IX. However, tests with benomyl segregants BEN 433, BEN 157‐10 and BEN AVK were intersterile with the same testers and also with the European A. mellea, A. lutea and A. ostoyae. The analysis of isozyme profiles showed that morphologically similar isolates had similar isozyme profiles of esterases. Their profiles however differed from those of the European A. mellea, A. lutea and A. ostoyae. On the basis of intersterility tests and analysis of isozyme profiles, the Kenyan isolates should be considered different.
Dieback of cork oak (Quercus suber) in Catalonia (NE Spain) caused by Botryosphaeria stevensii
Authors: Luque J. , Girbal J. 
Published: June 2007

Abstract Botryosphaeria stevensii Shoemaker (anamorph: Diplodia mutila Fr. apud Mont.) is reported as the cause of canker and dieback of cork oak (Quercus suber L.) in Catalonia (NE Spain). It also causes wilting of trees after cork is removed for industrial purposes. Symptomatology and details of morphology for both anamorph and teleomorph are given.
Anatomische und morphologische Untersuchungen zur Regenerationsfähigkeit einer durch Fluorimmissionen geschädigten Fichte
Authors: Von Schneider Marianne , Halbwachs G. 
Published: June 2007

Abstract Anatomical and morphological investigations on the regeneration capacity of a HF‐injured spruce. This paper investigates anatomical and morphological changes of a spruce originally dwarfed under the influence of HF‐emissions. The central question was: Would normal growth and growth process occur in this stressed spruce if the stress was eliminated?The tree was transplanted to an area free from HF‐emissions and its recovery was documented thirteen years after transplanting.