Secondary metabolites of rice sheath blight pathogen Rhizoctonia solani Kuhn and their biological activities
文献类型: 外文期刊
第一作者: Xu Liang
作者: Xu Liang;Wang Xiao-han;Luo Rui-ya;Lu Shi-qiong;Guo Ze-jian;Wang Ming-an;Zhou Li-gang;Liu Yang
作者机构:
关键词: rice sheath blight;Rhizoctonia solani Kuhn;secondary metabolites;bioactivities;in vitro phytotoxic activity
期刊名称:Journal of Integrative Agriculture ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2015 年 14 卷 1 期
页码:
收录情况: SCI
摘要: Eight compounds were isolated from the fermentation cultures of rice sheath blight pathogen Rhizoctonia solani Kuhn. They were identified as ergosterol (1), 6 beta-hydroxysitostenone (2), sitostenone (3), m-hydroxyphenylacetic acid (4), methyl m-hydroxyphenylacetate (5), m-hydroxymethylphenyl pentanoate (6), (Z)-3-methylpent-2-en-1,5-dioic acid (7) and 3-methoxyfuran-2-carboxylic acid (8) by means of physicochemical and spectroscopic analysis. Among them, 2, 3, 5-8 were isolated from R. solani for the first time. All the compounds were evaluated for their biological activities. 4-6 and 8 showed their inhibitory activities on the radical and germ elongation of rice seeds. 1, 4 and 7 showed moderate antibacterial activity to some bacteria. 4, 7 and 8 exhibited weak inhibitory activities on spore germination of Magnaporthe oryzae. 8 showed moderate antioxidant activity with the 1,1-diphenyl-2-picryhydrazyl (DPPH) and beta-carotene-linoleic acid assays. This is the first time to reveal compounds 5, 6 and 8 from rice sheath blight pathogen R. solani to have in vitro phytotoxic activity.
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