نتایج جستجو برای: sclerotinia sclerotiorum و fusarium graminearum

تعداد نتایج: 775927  

ژورنال: :گیاه پزشکی 0

قارچ های بیمارگر خاکبرد با ایجاد مرگ گیاهچه، پوسیدگی ریشه و طوقه و کاهش جوانه زنی بذر، باعث کاهش تولید محصولات کشاورزی می شوند. گونه های تریکودرما از مهم ترین عوامل بیوکنترل شناخته شده علیه بیمارگرهای خاکزی می باشند. در این پژوهش جهت بهبود فعالیت آنتاگونیستی trichoderma harzianum، القای جهش تصادفی با استفاده از اشعه گاما در دستگاه گاماسل با مقدار مصرف بهینه 250 گری روی جدایه th65 انجام پذیرفت و...

2018
Ciqiong Chen Li Long Fusheng Zhang Qin Chen Cheng Chen Xiaorui Yu Qingya Liu Jinku Bao Zhangfu Long

Curcuma longa possesses powerful antifungal activity, as demonstrated in many studies. In this study, the antifungal spectrum of Curcuma longa alcohol extract was determined, and the resulting EC50 values (mg/mL) of its extract on eleven fungi, including Fusarium graminearum, Fusarium chlamydosporum, Alternaria alternate, Fusarium tricinctum, Sclerotinia sclerotiorum, Botrytis cinerea, Fusarium...

2015
Rong Liu Jiasen Cheng Yanping Fu Daohong Jiang Jiatao Xie Thomas Hohn

Recent studies have demonstrated that a diverse array of mycoviruses infect the plant pathogenic fungus Sclerotinia sclerotiorum. Here, we report the molecular characterization of a newly identified mycovirus, Sclerotinia sclerotiorum fusarivirus 1 (SsFV1), which was isolated from a sclerotia-defective strain JMTJ14 of S. sclerotiorum. Excluding a poly (A) tail, the genome of SsFV1 comprises 77...

Journal: :Molecules 2015
Yu Shan Huan Li Fuqin Guan Yu Chen Min Yin Ming Wang Xu Feng Qizhi Wang

A new nortriterpene saponin, 3-O-β-d-glucuronopyranosyl-30-norolean-12,20(29)-dien-23- oxo-28-oic acid, namely bigelovii D (11), was isolated from the hydroalcoholic extract of herbs of Salicornia bigelovii along with 10 known saponins (1-10). Their chemical structures were identified on the basis of spectroscopic analyses including two-dimensional NMR and a comparison with literature data. Som...

Journal: :Hacettepe Journal of Biology and Chemistry 2021

In this study, we aimed to synthesize silver nanoparticles (AgNPs) using leaf, root, and stem extracts of Phaseolus vulgaris L. (Yunus-90) elucidate their antifungal activities. regard, the prepared AgNPs have been characterized by UV-vis, FT-IR, TEM, SEM, DLS techniques. Then, activity both synthesized commercially purchased was investigated via (i) agar well diffusion, (ii) fungal colony morp...

Journal: :Journal of applied microbiology 2006
M A Rodríguez G Cabrera A Godeas

AIMS To evaluate the antagonistic activity of Fusarium oxysporum nonpathogenic fungal strain S6 against the phytopathogenic fungus Sclerotinia sclerotiorum and to identify the antifungal compounds involved. METHODS AND RESULTS The antagonistic activity of Fusarium oxysporum strain S6 was determined in vitro by dual cultures. The metabolite responsible for the activity was isolated by chromato...

یکی از ترکیب­ های مهم گیاهان دارویی اسانس­ ها هستند که دارای اثرات بیولوژیکی فراوانی می ­باشند و استفاده از این ترکیبات طبیعی در کنترل آفات و بیماری‎های گیاهی، یکی از راهکارهای کاهش مخاطرات زیست محیطی است. در این آزمایش، اثر بازدارندگی غلظت­ های مختلف اسانس گیاه دارویی پونه (Mentha pulegium L) متعلق به تیره نعناعیان که از جمله گیاهان دارویی مهم، پرمصرف و اقتصادی ایران است، علیه رشد قار...

Journal: :Canadian journal of microbiology 2007
Rajesh Ramarathnam Shen Bo Yu Chen W G Dilantha Fernando Gao Xuewen Teresa de Kievit

Bacillus species are well known for their ability to control plant diseases through various mechanisms, including the production of secondary metabolites. Bacillus subtilis DFH08, an antagonist of Fusarium graminearum, and other Bacillus spp. that are antagonists of common fungal pathogens of canola were screened for peptide synthetase biosynthetic genes of fengycin and bacillomycin D. Specific...

Journal: :Journal of virology 2014
Xueqiong Xiao Jiasen Cheng Jinghua Tang Yanping Fu Daohong Jiang Timothy S Baker Said A Ghabrial Jiatao Xie

UNLABELLED Members of the family Partitiviridae have bisegmented double-stranded RNA (dsRNA) genomes and are not generally known to cause obvious symptoms in their natural hosts. An unusual partitivirus, Sclerotinia sclerotiorum partitivirus 1 (SsPV1/WF-1), conferred hypovirulence on its natural plant-pathogenic fungal host, Sclerotinia sclerotiorum strain WF-1. Cellular organelles, including m...

2015
An-Dong Gong He-Ping Li Lu Shen Jing-Bo Zhang Ai-Bo Wu Wei-Jie He Qing-Song Yuan Jing-De He Yu-Cai Liao

Aflatoxigenic Aspergillus fungi and associated aflatoxins are ubiquitous in the production and storage of food/feed commodities. Controlling these microbes is a challenge. In this study, the Shewanella algae strain YM8 was found to produce volatiles that have strong antifungal activity against Aspergillus pathogens. Gas chromatography-mass spectrometry profiling revealed 15 volatile organic com...

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