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- Title
Potato stem canker caused by binucleate Rhizoctonia AG-G in China.
- Authors
Yang, Yonggang; Zhao, Can; Guo, Zejian; Wu, Xuehong
- Abstract
A binucleate Rhizoctonia (BNR) isolate was recovered from potato subterraneous stems showing canker symptoms, which was collected from Chongqing municipality in southwestern China. This isolate was identified as anastomosis group (AG)-G based on cultural appearance, hyphal anastomosis and sequence analysis of the internal transcribed spacers of ribosomal DNA. Pathogenicity tests under glasshouse conditions revealed that the AG-G isolate induced brown, dry and slightly sunken lesions on potato stems. Necrotic areas covered less than 10 % of the surface of underground stems. This is the first report of BNR AG-G causing stem canker on potato plants in China.
- Subjects
RHIZOCTONIA diseases; POTATO diseases &; pests; RIBOSOMAL DNA; CANKER (Plant disease); PHOTOSYNTHATES
- Publication
Journal of General Plant Pathology, 2015, Vol 81, Issue 4, p287
- ISSN
1345-2630
- Publication type
Article
- DOI
10.1007/s10327-015-0594-y