Assessing genetic diversity in the web blight pathogen Thanatephorus cucumeris (anamorph = Rhizoctonia solani) subgroups AG-1-IE and AG-1-IF with molecular markers
نویسندگان
چکیده
منابع مشابه
High levels of gene flow and heterozygote excess characterize Rhizoctonia solani AG-1 IA (Thanatephorus cucumeris) from Texas.
To date, much of the genetics of the basidiomycete Thanatephorus cucumeris (anamorph = Rhizoctonia solani) remains unknown. Here, we present a population genetics study using codominant markers to augment laboratory analyses. Seven single-copy nuclear RFLP markers were used to examine 182 isolates of Rhizoctonia solani AG-1 IA collected from six commercial rice fields in Texas. Thirty-six multi...
متن کاملDNA fingerprinting and anastomosis grouping reveal similar genetic diversity in Rhizoctonia species infecting turfgrasses in the transition zone of USA.
Rhizoctonia blight is a common and serious disease of many turfgrass species. The most widespread causal agent, Thanatephorus cucumeris (anamorph: R. solani), consists of several genetically different subpopulations. In addition, Waitea circinata varieties zeae, oryzae and circinata (anamorph: Rhizoctonia spp.) also can cause the disease. Accurate identification of the causal pathogen is import...
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Herein, we report the first occurrence of web blight of rosemary caused by Rhizoctonia solani AG-1-IB in Gangneung, Gangwon Province, Korea, in August 2014. The leaf tissues of infected rosemary plants were blighted and white mycelial growth was seen on the stems. The fungus was isolated from diseased leaf tissue and cultured on potato dextrose agar for identification. The young hyphae had acut...
متن کاملMechanism of the Generation of New Somatic Compatibility Groups within Thanatephorus cucumeris (Rhizoctonia solani)
Single-basidiospore isolates (SBIs) were obtained from field isolates of Thanatephorus cucumeris (Rhizoctonia solani) AG-1 IC and AG-2-2 IV. Formation of distinctive tufts, a recognized feature of heterokaryon synthesis, was observed, and isolates derived from hyphal-tipped tuft hyphae were obtained following pairings between various strains. Three distinctive types of tufts were formed: the fi...
متن کاملاولین گزارش وقوع طبیعیThanatephorus cucumeris (تلئومورفِRhizoctonia solani AG-1 IA ) در شالیزارهای ایران
سوختگی غلاف ناشی از قارچ Rhizoctonia solani AG1 IA یکی از مهم‌ترین بیماریهای برنج در دنیا محسوب میشود. این بیماری در همه مناطق برنج خیز کشور منجمله مازندران و گیلان گسترش دارد و مهم‌ترین بیماری ارقام پرمحصول و اصلاح شده برنج به شمار میرود. اگرچه گزارش فرم جنسی قارچ بیمارگر یعنی Thanatephorus cucumeris از گیاه برنج و میزبانهای دیگر در کشورهای مختلف گزارش گردیده، ولی تاکن...
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ژورنال
عنوان ژورنال: Journal of General Plant Pathology
سال: 2012
ISSN: 1345-2630,1610-739X
DOI: 10.1007/s10327-012-0361-2