نتایج جستجو برای: trichoderma و شالیزار
تعداد نتایج: 766281 فیلتر نتایج به سال:
Cellulolytic, xylanolytic, chitinolytic and beta-1,3-glucanolytic enzyme systems of species belonging to the filamentous fungal genus Trichoderma have been investigated in details and are well characterised. The ability of Trichoderma strains to produce extracellular proteases has also been known for a long time, however, the proteolytic enzyme system is relatively unknown in this genus. Fortun...
Trichothecenes are mycotoxins produced by Trichoderma, Fusarium, and at least four other genera in the fungal order Hypocreales. Fusarium has a trichothecene biosynthetic gene (TRI) cluster that encodes transport and regulatory proteins as well as most enzymes required for the formation of the mycotoxins. However, little is known about trichothecene biosynthesis in the other genera. Here, we id...
The use of Trichoderma isolates with efficient antagonistic activity represents a potentially effective and alternative disease management strategy to replace health hazardous chemical control. In this context, twenty isolates were obtained from tomato rhizosphere and evaluated by their antagonistic activity against four fungal pathogens (Fusarium oxysporum f. sp. lycopersici, Alternaria altern...
OBJECTIVES The uncommon fungal pathogen Trichoderma shows increasing medical importance particularly in immunocompromised patients. Despite systemic antifungal therapy, prognosis of Trichoderma infection is poor regardless of the type of infection and the therapy used. The aim of the present study was to evaluate the in vitro activity and synergism of double antifungal combinations including am...
S: Fusarium solani and Rhizoctonia solani are the common causal pathogens causes the damping off disease of beans (Phaseolus vulgaris L.) in Egypt. The antagonistic effect of four Trichoderma species, i.e. Trichoderma album, Triechoderma hamatum, Trichoderma harzianum and Trichoderma viride, was tested against F. solani and R. solani in vitro, in greenhouse and in field. In vitro tests, all Tri...
Trichoderma sp. is one of the endophytic fungi, which is produce toxic culturefiltrate against plant pathogen e.g plant parasitic nematode. Experiments were conducted to in vitro bioassays of the antagonistic effects of culturefiltrate produced by endophytic fungi Trichoderma sp. in different medium on mobility and mortality of Meloidogyne-J2. Three different medium of culturfiltrate were inves...
ذخایر مخزن کربن آلی خاک جنگل نقش مهمی در رابطه با کاهش اثرات تغییر پارامترهای اقلیمی و مقدار تولیدات زی توده های گیاهی ایفا می کند و تبدیل کاربری اراضی جنگلی سبب هدررفت این ذخایر می شود. در پژوهش پیش رو روند تغییرات ذخایر مخزن کربن آلی خاک از داخل جنگل به سمت داخل شالیزار مجاور آن بررسی شد. دو بخش 10 هکتاری مجزا در پارک جنگلی نور با تیپ پوشش گیاهی مشابه (پلت- انجیلی) در مجاورت زمین های کشاورزی ...
جنس Trichodermaاز مهمترین جنسهای قارچی در زمینه کنترل بیولوژیک بیماریهای گیاهی، افزایش رشد و القای مقاومت در گیاهان به شمار میرود. ارتباط فیلوژنتیکی 81 جدایه متعلق به شش گونه از این جنس (شامل چند جدایه بیوکنترل امید بخش) که از مزارع برنج استان مازندران به دست آمدهاند، بر اساس توالی قطعهای از ژن αtef1بررسی شد. توالیهای ژن مذکور در جدایههای مورد آزمایش به همراه توالیه...
Fungi belonging to Fusarium genus can infect crops in the field and cause subsequent mycotoxin contamination, which leads to yield and quality losses of agricultural commodities. The mycotoxin zearalenone (ZEN) produced by several Fusarium species (such as F. graminearum and F. culmorum) is a commonly-detected contaminant in foodstuffs, posing a tremendous risk to food safety. Thus, different s...
Towards assessing the genetic diversity and occurrence of Trichoderma species from the Indian region of Indo-Burma Biodiversity hotspot, a total of 193 Trichoderma strains were isolated from cultivated soils of nine different districts of Manipur comprising 4 different agroclimatic zones. The isolates were grouped based on the morphological characteristics. ITS-RFLP of the rDNA region using thr...
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