First report of Alternaria astragali as a causative agent of leaf spot disease in Polygonum multiflorum Thunb.

文献类型： 外文期刊

第一作者： Xiong, Guoru

作者： Xiong, Guoru;Zhang, Shuzhen;Zhao, Gengfeng;Li, Li

作者机构：

关键词： Alternaria astragali;identification;internal transcribed spacer (ITS) analysis;leaf spot and Polygonum multiflorum Thunb.

期刊名称：AFRICAN JOURNAL OF MICROBIOLOGY RESEARCH （ 影响因子：0.539； 五年影响因子：0.564 ）

ISSN： 1996-0808

年卷期： 2012 年 6 卷 3 期

页码：

收录情况： SCI

摘要： Leaf necrosis was observed on leaves of Polygonum multiflorum Thunb. in Kunming, China, from 2008 to 2009. The causal fungus was isolated and pure cultured from the leaf spot lesions on prostate-specific antigen (PSA). Koch's postulates were fulfilled by inoculating leaves in vitro in a moist chamber and in vivo in field. Morphological and internal transcribed spacer (ITS) region sequence analysis (FJ379591) revealed that the fungal strain shared 99% nucleotide identity with Alternaria astragali (EF110523). This is the first report of A. astragali causing leaf spot on P. multiflorum Thunb. in China.

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