نتایج جستجو برای: t virens and t atroviride
تعداد نتایج: 16954422 فیلتر نتایج به سال:
.بیماری شانکر ساقه گوجه فرنگی ناشی از botrytis cinerea یکی از بیماری های مخرب این محصول در گلخانه ها است. تا کنون رقمی که نسبت به این بیماری مقاومت مطلوبی نشان دهد گزارش نشده است و قارچکش های موجود نیز به طور کامل در کنترل این بیماری موثر نبوده اند. سالیسیلیک اسید یکی از مواد شیمیایی است که از یک سو به عنوان الیسیتور باعث القای مقاومت سیستمیک در گیاه می شود و از سوی دیگر خطرات زیست محیطی سموم ش...
One hundred and two microorganisms were isolated from 85 paddy soil samples of different locations in Guilan Province. Antagonistic effects of the microorganisms were tested against Gibberella fujikuroi on PDA medium. Twenty one microorganism isolates were selected for seed treatment in blotter test. Seven isolates that were satisfactorily effective in reducing pathogen colonies formed on seeds...
Classical models of population dynamics predict that with increasing initial population densities the per capita growth will diminish. Observations over a broad range of initial densities with a wild-type and a genetically engineered strain of the filamentous fungus, Trichoderma virens (Arx), in soil and autoclaved soil differed from these predictions. The per capita growth response of T. viren...
The antagonistic potentialities of seven species native Trichoderma viz., T. atroviride, koningiopsis, ovalisporum, Hypocrea lixii, harzianum, asperellum and harzianum were evaluated in vitro against Cochliobolus heterostrophus causing maydis leaf blight maize. current study dual culture assay, revealed the percentages mycelial growth inhibition C. by atroviridae, asperellu 80.4%, 83.80%, 82.85...
Background The ascomycete fungus Trichoderma reesei is the predominant source of enzymes for industrial conversion of lignocellulose. Its glycoside hydrolase family 7 cellobiohydrolase (GH7 CBH) TreCel7A constitutes nearly half of the enzyme cocktail by weight and is the major workhorse in the cellulose hydrolysis process. The orthologs from Trichoderma atroviride (TatCel7A) and Trichoderma har...
قارچهای اندوفیت با سازوکارهای مختلف باعث افزایش رشد گیاه و همچنین مقاومت آن به تنشهای زنده و غیرزنده میشوند. به این منظور جهت شناسایی قارچهای اندوفیت درخت پسته و ارزیابی ویژگیهای محرک رشدی و بیوکنترلی آنها، از برگ و میوه درختان سالم پسته شهرستان رفسنجان نمونهبرداری انجام گرفت. پس از شناسایی ریختشناسی و مولکولی، فاکتورهای محرک رشدی از قبیل تولید اکسین، سیدروفور، حل کنندگی فسفات م...
Medicinal plants may become a favourable habitat for associative microorganisms, especially endophytic microbes inhabiting Zingiberaceaen species. Preliminary investigation has revealed an assemblage of fungi colonizing the healthy rhizome Elettaria sp. collected from Sibayak Forest, North Sumatra based on molecular evidences. This study investigated IAA-producing and antifungal activity Elleta...
genus trichoderma is a monophyletic fungus which some their species is known as biocontrol agent. this study was carried out for phylogenetic analysis of some isolates of the genus trichoderma. in this study 73 sequences (including 33 sequences from t. aspereluum, t. brevicompactum, t. capillare, t. harzianum, t. koningiopsis, t. pleuroticola and t. virens and 40 sequences obtained from geneban...
BACKGROUND In continuation of our previously interest in the saccharification of agriculture wastes by Bacillus megatherium in solid state fermentation (SSF), we wish to report an investigation and comparative evaluation among Trichoderma sp. for the saccharification of four alkali-pretreated agricultural residues and production of hydrolytic enzymes, carboxymethyl cellulase (CMCase), filter pa...
this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...
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