研究报告

Genetic Diversity and Pathogenicity Variation of Different Rhizoctonia solani Isolates in Rice from Zhejiang Province, China

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  • 1 Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; 2College of Life Science, Hebei Normal University, Shijiazhuang 050016, China; *Corresponding author, E-mail: wangylaa@yahoo.com.cn; sungc01@
    sina.com

Received date: 1900-01-01

  Revised date: 1900-01-01

  Online published: 2010-01-10

Abstract

Sixty Rhizoctonia solani strains were isolated from rice sheath blight samples collected from ricegrowing regions of Zhejiang Province, China. Hyphal fusion identification revealed that all the 60 strains belonged to anastomosis group AG1, as they all fused with the three intraspecific group of AG1 group(AG1ⅠA, AG1ⅠB and AG1ⅠC). Fiftyeight strains out of the 60 strains fused with the standard strain of AGBⅠ group. Pathogenicity identification analysis in vitro indicated significant difference in pathogenicity among the strains. TTZF1, the most pathogenetic strain, was significantly more pathogenetic than the other 52 strains. Further internal transcribed spacer(ITS) analysis indicated that phylogenetic tree coincided with the result of hyphal fusion identification, and was irrelevant with pathogenicity difference.

Cite this article

CHEN Tao, ZHANG Zhen, CHAI Rong-yao,WANG Jiao-yu,MAO Xue-qin,QIU Hai-ping,DU Xin-fa,JIANG Hua, WANG Li-an,WANG Yan-li .

Genetic Diversity and Pathogenicity Variation of Different Rhizoctonia solani Isolates in Rice from Zhejiang Province, China

[J]. Chinese Journal OF Rice Science, 2010 , 24(1) : 67 -72 . DOI: DOI: 10.3969/j.issn.1001-7216.2010.12

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