First report of brown root rot caused by Pythium vexans on ramie in Hunan, China

文献类型： 外文期刊

第一作者： Yu, Yong-Ting

作者： Yu, Yong-Ting;Chen, Jia;Gao, Chun-Sheng;Zeng, Liang-Bin;Li, Zhi-Min;Zhu, Tao-Tao;Sun, Kai;Cheng, Yi;Sun, Xiang-Ping;Yan, Li;Yan, Zhun;Zhu, Aiguo

作者机构：

关键词： Boehmeria nivea;brown root rot;molecular identification;pathogenicity;Pythium vexans

期刊名称：CANADIAN JOURNAL OF PLANT PATHOLOGY （ 影响因子：2.442； 五年影响因子：1.993 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Ramie is an important natural fibre crop and a perennial herbaceous plant of the nettle family Urticaceae. In 2013, brown root rot disease was observed on ramie plants in Yuangjiang, Hunan Province, China. Symptoms included stunted plants, reduced number of ramets per plant, and brown to purple-black discolouration of the root. The pathogen was identified as Pythium vexans according to morphological features and sequence identity (99-100%) to the published data for internal transcribed spacer (ITS), 18S and 28S rDNA sequences. The pathogenicity was confirmed on healthy fibrous roots of seedlings and on detached storage roots under greenhouse conditions. To our knowledge, this is the first report of brown root rot disease caused by Pythium vexans on ramie.

分类号： S4

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