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| Survey and examination of the potential alternative hosts of Villosiclava virens, the pathogen of rice false smut, in China |
| DENG Qi-de, YONG Ming-li, LI Dan-yang, LAI Chao-hui, CHEN Hong-ming, FAN Jing, HU Dong-wei |
1、The State Key Laboratory of Rice Biology, Biotechnology Institute, Zhejiang University, Hangzhou 310058, P.R.China
2、Plant Protection Station of Xiangshan County, Xiangshan 315700, P.R.China
3、Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R.China |
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摘要 Rice false smut is caused by ascomycete Villosiclava virens, whose potential alternative hosts have been assumed previously. Here its potential alternative hosts were surveyed and identified from 2008 to 2013 in the main rice-growing regions in China. Two common weeds in paddy fields, Digitaria sanguinalis Scop. and Echinochloa crusgalli (L.) Beauv., were found to present the similar symptoms to smut diseases in a few individuals in 2012 and 2013 in Zhejiang and Sichuan provinces of China, respectively. After the examinations of the spore morphology, their infection and extension mode in hosts, pathogen cell wall components, and molecular identification, the two pathogens were identified to be the Basidiomycetes, Ustilago syntherismae and Ustilago trichophora, respectively. So far there has been no alternative host of V. virens to be identified in China. These suggest that the alternative hosts of V. virens, if they do exist, are not possible to play an important role in the pathogen life cycle and the disease epidemics.
Abstract Rice false smut is caused by ascomycete Villosiclava virens, whose potential alternative hosts have been assumed previously. Here its potential alternative hosts were surveyed and identified from 2008 to 2013 in the main rice-growing regions in China. Two common weeds in paddy fields, Digitaria sanguinalis Scop. and Echinochloa crusgalli (L.) Beauv., were found to present the similar symptoms to smut diseases in a few individuals in 2012 and 2013 in Zhejiang and Sichuan provinces of China, respectively. After the examinations of the spore morphology, their infection and extension mode in hosts, pathogen cell wall components, and molecular identification, the two pathogens were identified to be the Basidiomycetes, Ustilago syntherismae and Ustilago trichophora, respectively. So far there has been no alternative host of V. virens to be identified in China. These suggest that the alternative hosts of V. virens, if they do exist, are not possible to play an important role in the pathogen life cycle and the disease epidemics.
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Received: 08 December 2014
Accepted:
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| Fund: This work was supported by the National Natural Science Foundation of China (31271999) and the Special Fund for Agro-Scientific Research in the Public Interest, China (200903039-5). |
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Corresponding Authors:
HU Dong-wei, Tel/Fax: +86-571-88982409, E-mail: hudw@zju.edu.cn
E-mail: hudw@zju.edu.cn
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| About author: DENG Qi-de, Mobile: +86-13116760377, E-mail: 21216093@zju.edu.cn; |
Cite this article:
DENG Qi-de, YONG Ming-li, LI Dan-yang, LAI Chao-hui, CHEN Hong-ming, FAN Jing, HU Dong-wei.
2015.
Survey and examination of the potential alternative hosts of Villosiclava virens, the pathogen of rice false smut, in China. Journal of Integrative Agriculture, 14(7): 1332-1337.
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