您好，欢迎访问福建省农业科学院 机构知识库！
福建省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The role of Ustilaginoidea virens sclerotia in increasing incidence of rice false smut disease in the subtropical zone in China

文献类型： 外文期刊

作者： Yong, Mingli 1 ; Deng, Qide 1 ; Fan, Linlin 1 ; Miao, Jiankun 2 ; Lai, Chaohui 3 ; Chen, Hongming 3 ; Yang, Xiujuan 4 ; W 1 ;

作者机构： 1.Zhejiang Univ, Biotechnol Inst, State Key Lab Rice Biol, Hangzhou 310058, Zhejiang, Peoples R China

2.Liaoning Acad Agr Sci, Plant Protect Inst, Shenyang 110161, Liaoning, Peoples R China

3.Plant Protect Stn Xiangshanxian Cty, Ningbo 315700, Zhejiang, Peoples R China

4.Fujian Acad Agr Sci, Plant Protect Inst, Fuzhou 350013, Fujian, Peoples R China

5.Fujian Acad Agr Sci

关键词： Ustilaginoidea virens;Rice false smut;Sclerotium;Ascospore;Life cycle

期刊名称：EUROPEAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：1.907； 五年影响因子：2.022 ）

ISSN： 0929-1873

年卷期： 2018 年 150 卷 3 期

页码：

收录情况： SCI

摘要： Rice false smut is heavily and increasingly occurring in subtropical zones in China in the past decades. The pathogen of the disease, Ustilaginoidea virens, can produce both chlamydospores and sclerotia, and the sclerotia seem to form frequently in temperate or high-altitude regions in China. Which of these structures play a dominant role in the pathogen's life cycle in subtropical zones remains unclear. Here we found that Ustilaginoidea virens could produce a great number of sclerotia in subtropical zones and the maximal number of sclerotia could reach to 2.25 million per hectare. In the year with relatively low autumn temperatures, the disease severity and sclerotia numbers of U. virens increased significantly. Although there was a few sclerotia in subtropical zones capable of overwintering successfully, one individual sclerotium could produce large numbers of ascospores. In the rice-growing paddy field, the ascospores could be trapped in both temperate and subtropical zones in May-September, when rice was at the booting stage, the critical infection period of rice false smut. This suggested that the sclerotia of rice false smut in subtropical zone played an important role in the life cycle of Ustilaginoidea virens and acted as the primary inoculum. Experiments in the laboratory showed that mature sclerotia of rice false smut remained dormant for about 2-5 months, and that light was essential for fruiting body differentiation. As with ergot, the fruiting bodies of Ustilaginoidea virens secreted sticky droplets on the stromata that prevented the ascospores from dispersing into the air, implying that the transfer of ascospores of Ustilaginoidea virens to rice plants in paddy field needed an intermediary vector.

  • 相关文献

[1]Development and application of an allele-specific PCR assay for detecting T409C mutation of cyp51 gene linked with tebuconazole resistance in Villosiclava virens (rice false smut). Shi, Niu-Niu,Ruan, Hong-Chun,Chen, Fu-Ru,Yang, Xiu-Juan,Dai, Yu-Li,Gan, Lin,Du, Yi-Xin,Zhang, Yu-Long.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：福建省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台