نتایج جستجو برای: t virens and t atroviride
تعداد نتایج: 16954422 فیلتر نتایج به سال:
نمونهبرداری از مزارع برنج در مناطق مختلف استان مازندران انجام شد. نمونههای خاک و اندامهای هوایی برنج به آزمایشگاه منتقل گردید و جدایههای Trichodermaبا استفاده از محیط کشت انتخابی RBSF از آنها جداسازی شدند. 202 جدایه به روش تک اسپور خالصسازی و DNA ژنومی آنها با استفاده از کیت استخراج شد. برای شناسایی جدایههای مذکور، صفات مورفولوژیکی و نیز صفات ملکولی آنها مورد بررسی قرار گرفتند. صفات مور...
Fungi have a plethora of chitinases, which can be phylogenetically divided into three subgroups (A, B and C). Subgroup C (sgC) chitinases are especially interesting due to their multiple carbohydrate-binding modules, but they have not been investigated in detail yet. In this study, we analyzed sgC chitinases in the mycoparasites Trichoderma atroviride and Trichoderma virens. The expression of s...
To investigate the biodiversity of Trichoderma (Hypocreaceae) and their relation to sediment physical and chemical properties, we collected a total of 491 sediment samples from coastal wetlands (tidal flat and wetland) in Southeast China. Further, we applied two types of molecular approaches such as culture dependent and independent methods for identification of Trichoderma spp. A total of 254 ...
Several proteins and peptides of microbial origin are reported for their elicitor properties, which play a vital role in the development of local and systemic resistances in plants. In this study, the efficacy of total crude proteins (TCP) extracted from six different Trichoderma spp. (T. asperellum, T. harzianum, T. atroviride, T. virens, T. longibrachiatum, and T. brevicompactum) was evaluate...
In this study, effects of single and combined applications biocontrol agents; Trichoderma spp. (T. atroviride, T. virens) plant growth promoting rhizobacteria (Pseudomonas koreensis, Bacillus subtilis) on growth, wilt disease severity caused by Verticillium dahliae defence-related enzymes (peroxidase, polyphenol oxidase, phenylalanine ammonium lyase β-1,3 glucanase) eggplant, were investigated....
We have used a Mediterranean hot spot of biodiversity (the Island of Sardinia) to investigate the impact of abiotic factors on the distribution of species of the common soil fungus Trichoderma. To this end, we isolated 482 strains of Hypocrea/Trichoderma from 15 soils comprising undisturbed and disturbed environments (forest, shrub lands and undisturbed or extensively grazed grass steppes respe...
Seven different strains of Trichoderma are isolated from wilt infected leguminous crops of a Madhya Pradesh state and tested for their antagonistic activity against Fusarium (soil borne pathogen) which is expressed as a zone of inhibition in the culture plates. The seven strains are identified as Trichoderma viride, T. harzianum, T. asperellum, T. koningii, T. atroviride, T. longibrachiatum, an...
Some 350 Trichoderma isolates were obtained from soil samples collected from different parts of Iran. Cultures were purified on 2% water agar by hyphal tip method prior to identification. Obtained isolates were identified using morphological features including colony characters (pigmentation and growth rate on PDA) and microscopic characters such as shape of conidiophores, shape and size of con...
سوختگی، ناشی از قارچ Mycosphaerella rabiei، مهمترین بیماری نخود در ایران است. بهمنظور یافتن روشی برای کنترل بیولوژیک این بیماری، در آغاز اثر 36 جدایه از سه گونۀ Trichoderma harzianum، T. virens و T. atroviride روی یک جدایۀ پرآزار بیمارگر در فرآیند آزمونهای فراانگلی، کشت متقابل و تولید مواد فرّار پادزی، در شرایط آزمایشگاهی بررسی شد. آنگاه تأثیر جدایههای برتر این گونهها روی شدت بیماری و رشد ...
Sequences of the internal transcribed spacer region 1 (ITS1) of the ribosomal DNA were used to determine the phylogenetic relationships of species of Trichoderma sect. Pachybasium. To this end, 85 strains-including all the available ex-type strains-were analyzed. Parsimony analysis demonstrated that the section is nonmonophyletic, distributing the 85 strains among three main groups that were su...
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