Secondary metabolites of rice sheath blight pathogenRhizoctonia solaniKühn and their biological activities

XU Liang; WANG Xiao-han; LUO Rui-ya; LU Shi-qiong; GUO Ze-jian; WANG Ming-an; LIU Yang; ZHOU Li-gang

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Secondary metabolites of rice sheath blight pathogenRhizoctonia solaniKühn and their biological activities

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Eight compounds were isolated from the fermentation cultures of rice sheath blight pathogenRhizoctonia solaniKühn. They were identiifed as ergosterol (1), 6β-hydroxysitostenone (2), sitostenone (3),m-hydroxyphenylacetic acid (4), methylm-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 fromR. solani for the ifrst time. Al the compounds were evaluated for their biological activities.4–6 and8 showed their inhibitory activities on the radical and germ elongation of rice seeds.1,4 and7 showed moderate antibacterial activity to some bacteria.4,7 and8 exhibited weak inhibitory activities on spore germination ofMagnaporthe oryzae.8 showed moderate antioxidant activity with the 1,1-diphenyl-2-picryhydrazyl (DPPH) andβ-carotene-linoleic acid assays. This is the ifrst time to reveal compounds5,6 and8 from rice sheath blight pathogenR. solani to havein vitro phytotoxic activity.

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《农业科学学报（英文版）》 |2015年第1期|80-88|共9页
作者
XU Liang; WANG Xiao-han; LUO Rui-ya; LU Shi-qiong; GUO Ze-jian; WANG Ming-an; LIU Yang; ZHOU Li-gang;
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Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

Institute of Agro-Products Processing and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China;

Key Laboratory of Plant Pathology,Ministry of Agriculture/Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, P.R.China;

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Secondary metabolites of rice sheath blight pathogenRhizoctonia solaniKühn and their biological activities

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