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Showing 1 to 19 of 19 for “"sclerotia"”.
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The Response of Macrophomina Phaseolina in Vitro or Its Sclerotia in Soil to Various Soil Fungicides
Made available in DSpace on 2014-12-10T23:32:49Z (GMT). No. of bitstreams: 1 7514125.pdf: 1878641 bytes, checksum: 4da131a15f95b757852557317b4e2694 (MD5) Previous issue date: 1975
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Pathogenicity of sclerotia-forming isolates of Colletotrichum truncatum to soybeans (Glycine max) and the effect of soil temperature on root infection
Pathogenicity of three sclerotia-forming isolates and a nonsclerotia-forming isolate of Colletotrichum truncatum, causal agent of soybean anthracnose, to soybean roots was studied in an aeroponics system, and their pathogenicity to above-ground parts and effect on yield were examined in the field. …
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Investigations into the molecular interactions between Claviceps purpurea, the causal agent of ergot, and cereal hosts
… of cereals and grasses, producing an ergot sclerotia (the overwintering structure of the pathogen) in place of a grain. C. purpurea can infect wheat, barley, rye, oats, triticale and millet, detrimentally affecting grain production and flour quality. Ergot also impacts human health directly …
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Qualidade fisiológica de sementes de algodoeiro e comportamento in vitro de Sclerotinia sclerotiorum (Lib.) De Bary, submetido a diferentes temperaturas
… the effect of temperature on mycelial growth and sclerotia production, identify the incidence of pathogens associated with cotton seeds not inoculated and inoculated with S. sclerotiorum and studying the physiological quality of cotton seeds inoculated and not inoculated with S. sclerotiorum . The …
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The systematics and ecology of Boletes with special reference to the Genus Suillus and its ectomycorrhizal relationships in Nepal
… Boletinellus merulioides forms abundant sclerotia in nature throughout its range in eastern North America. Sclerotia collected in the forest germinated to form mycelial colonies that had the same appearance and microscopic characteristics as colonies derived from basidiocarps. Sclerotia …
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The influence of meteorological events and cultural practices on sclerotinia crown and stem rot of alfalfa, caused by Sclerotinia trifoliorum
… fields. In microplots artificially infested with sclerotia, greatest numbers of apothecia were found during November and December. Temperature and rainfall had significant impact on apothecium development. A proposed prediction method for apothecium appearance considers monitoring mean soil …
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Characterization and protein fingerprinting of Botrytis cinerea isolates /
… isolates. Sensitive isolates produced no sclerotia whereas resistant isolates produced large number of sclerotia. The fungicide iprodione affected sclerotial production in the resistant isolates. The number of sclerotia was decreased by the increase of iprodione in the medium. Sporulation …
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Sensitivity and resistance of Sclerotinia minor to fungicides for control of Sclerotinia blight of peanut
… in this case. Fungicide treatments reduced sclerotial populations of all strains, and reduced the viability of sclerotia from sensitive but not resistant strains. Fungicide-resistant strains were capable of surviving and competing pathogenically in microplots infested with equal numbers of …
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Breeding for resistance to clover rot (Sclerotinia spp.) in red clover breeding (Trifolium pratense)
… isolates. Mycelial growth rate, production of sclerotia and secretion of oxalate were measured and aggressiveness was assessed by both bio-tests. Growth rate, sclerotia production, oxalate production and pathogenicity according to both bio-tests differed between isolates. While fast growing …
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Major Sclerotial Polypeptides Of Psychrophilic Fungi: Identification, Immunological Relatedness, Localization And In Vivo Synthesis
Major sclerotial polypeptides have been identified by one and two-dimensional gel electrophoresis in Myriosclerotinia borealis, Coprinus psychromorbidus, Typhula idahoensis and Typhula incarnata. The number, molecular mass, relative proportions and isoelectric points of the major sclerotial …
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Role of mycorrhizal networks in dry Douglas-fir forests
… other sources of inoculm (e.g., spores, sclerotia, hyphal fragments) were more important. I found that mature trees not only competed for resources with seedlings but offered some facilitative effects at intermediate distances within their rooting zones. My key finding was that access to …
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Sclerotinia sclerotiorum : phytotoxins and metabolism of phytoalexins
… for the first time. Fatty acids isolated from sclerotia of S. sclerotiorum of which oleic acid was a major component were found to be cytotoxic to the brine shrimp (Artemia salina). Chemical defences, i.e. phytoalexins, were elicited and isolated from a resistant plant (Erucastrum gallicum, dog …
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Genetics and genomics studies of rice disease resistance and development of alternative disease management methods for bacterial panicle blight and sheath blight
… were able to suppress bacterial cell growth and sclerotia germination in vitro, and were able to reduce the BPB and SB symptoms in rice in the field. Based on the 16S rDNA sequencing analysis, those RABs were identified as Bacillus and Lysinibacillus spp., and are potential candidates for …
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Molecular characterization of Rhizoctonia spp. isolates and sustainable approaches to control Rhizoctonia diseases in ornamental nursery
… and/or strongly reducing of resting structures (sclerotia) into soil. Therefore, following an in vitro screening of some BCAs effective against R. solani (AG-4 group) and Rhizoctonia BNR (AG-A, AG-G and AG-F groups), the consequent step was the efficacy evaluation of 6 commercial fungicides and 8 …
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Exploring the Genomic, Plant Growth Promoting, and Biocontrol Potential of a novum species 'Candidatus Pseudomonas auctus' JDE115 with its description
… microscopy confirmed structural damage to fungal sclerotia. JDE115 produces a range of antifungal compounds, including chitinase, glucanase, protease, cellulase, siderophores, hydrogen cyanide, and volatile organic compounds (VOCs) such as dimethyl disulfide (DMDS) and 1-undecene. Greenhouse …
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Evaluation of fungicide resistance in Sclerotinia minor and strategies for chemical control of sclerotinia blight of peanut
… experimental fungicides effectively inhibited sclerotial formation in soil-plate assays, whereas all the dicarboximide fungicides (chlozolinate, iprodione and vinclozolin) significantly inhibited sclerotial formation. No cross-resistance was detected between the dicarboximide fungicides and …
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Soybean disease research on green stem disorder, effects of seed treatments on Sclerotinia stem rot, and resistance to Cercospora leaf blight
… as mycelia or when it is infested with seeds as sclerotia, the fungus can kill germinating seedlings. The use of fungicide seed treatments may help to manage this phase of the disease and may provide residual protection to infection beyond the seedling stage. The objectives of my study were to …
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The Roles of a Conserved MAP Kinase Pathway in the Regulation of Development and Secondary Metabolism in Aspergillus Species
… in inhibition of both asexual sporulation and sclerotia production. Additionally, each of these mutants produced significantly lower levels of aflatoxin B1 and increased levels of other secondary metabolites, such as leporin B and cyclopiazonic acid. Deletion of hamE resulted in sexual …
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Ecological Factors Influencing Infection Rates of the Birch Polypore Inonotus obliquus in the Laurentian Mixed Forest Province
<p><em>Inonotus obliquus, </em>a conk forming polypore parasitic to birch (<em>Betula </em>spp<em>.</em>) trees in northern hardwood forests around the world, has been harvested intensively in recent years for its potentially medicinal properties. However, there is a dearth of ecological …