Survey and examination of the potential alternative hosts of Villosiclava virens, the pathogen of rice false smut, in China

作     者：DENG Qi-de YONG Ming-li LI Dan-yang LAI Chao-hui CHEN Hong-ming FAN Jing HU Dong-wei 

作者机构：The State Key Laboratory of Rice Biology Biotechnology Institute Zhejiang University Plant Protection Station of Xiangshan County Rice Research Institute Sichuan Agricultural University 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2015年第14卷第7期

页      面：1332-1337页

核心收录：

学科分类：09[农学] 090401[农学-植物病理学] 0710[理学-生物学] 0832[工学-食品科学与工程（可授工学、农学学位）] 090502[农学-动物营养与饲料科学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1004[医学-公共卫生与预防医学(可授医学、理学学位)] 0905[农学-畜牧学] 0906[农学-兽医学] 0904[农学-植物保护] 0901[农学-作物学] 0703[理学-化学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：supported by the National Natural Science Foundation of China (31271999) the Special Fund for Agro-Scientific Research in the Public Interest, China (200903039-5) 

主　　题：alternative host Villosiclava virens Digitaria sanguinalis Scop. Echinochloa crusgalli （L.） Beauv. Ustilagospp. rice false smut 

摘      要：Rice false smut is caused by ascomycete Villosiclava virens, whose potential alternative hosts have been assumed previ- ously. 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.