نتایج جستجو برای: ascochyta
تعداد نتایج: 417 فیلتر نتایج به سال:
اختلافات بیماری زایی و مولکولی در تعدادی از جمعیت های ascochyta rabiei ،عامل بیماری بلایت آسکوکیتایی نخود، با استفاده از 30 جدایه جمع آوری شده از پنج استان کشور شامل ایلام، آذربایجان شرقی، کرمانشاه، کهکیلویه و بویر احمد و لرستان بررسی شد. به منظور تشخیص طیف بیماری زایی جدایه ها، بیماری زایی جدایه های مذکور روی هفت رقم افتراقی نخود مورد مطالعه قرار گرفت که در 16 گروه بیماری زایی طبقه بندی شدند. ...
Ascochyta blight caused by Ascochyta rabiei is one of the major diseases of chickpea (Cicer arientinum) in Iran. Many phytopathogenic microorganisms, incuding A .rabiei, attack their host plant by secreting pectic enzymes including polygalacturonase (PG) which causes modification of cell-wall structure, increasing accessibility of cell-wall components for degradation by other enzymes. Polygalac...
Ascochyta blight caused by Ascochyta rabiei is one of the major diseases of chickpea (Cicer arientinum) in Iran. Many phytopathogenic microorganisms, incuding A .rabiei, attack their host plant by secreting pectic enzymes including polygalacturonase (PG) which causes modification of cell-wall structure, increasing accessibility of cell-wall components for degradation by other enzymes. Polygalac...
A new antibiotic, ascochlorin, C23H29O4CI, was obtained from the filter cake of the fermented broth of Ascochyta viciae Libert. Ascochlorin inhibits plaque formation of both DNA and RNA viruses in the agar-diffusion plaque inhibition method. However, it showed no antiviral activity by the tube culture method. It showed cytotoxicity to chick embryo fibroblast monolayer and HeLa cells at a concen...
Crude protein extracts from the chickpea (Cicer arietinum L .) pathogenic fungus Ascochyta rabiei catalyze the N A D PH dependent conversion of the pterocarpan phytoalexins medicarpin and maackiain to 1) 2'-hydroxyisoflavans, 2) 1 a-hydroxypterocarp-l,4-diene-3-one, and 3) 10,2'dihydroxyisoflav-8-ene-7-one derivatives. A pterocarpan: N A D PH oxidoreductase which cleaves the benzylphenyl ether ...
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