Secondary metabolites of rice sheath blight pathogen Rhizoctonia solani Kuhn and their biological activities

被引：16

作者：

Xu Liang ^{[1
]}

Wang Xiao-han ^{[1
]}

Luo Rui-ya ^{[1
]}

Lu Shi-qiong ^{[1
]}

Guo Ze-jian ^{[1
]}

Wang Ming-an ^{[1
]}

Liu Yang ^{[2
]}

Zhou Li-gang ^{[1
]}

机构：

[1] China Agr Univ, Coll Agron & Biotechnol, Dept Plant Pathol, Key Lab Plant Pathol,Minist Agr, Beijing 100193, Peoples R China

[2] Chinese Acad Agr Sci, Inst Agroprod Proc & Technol, Beijing 100193, Peoples R China

来源：

JOURNAL OF INTEGRATIVE AGRICULTURE | 2015年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

rice sheath blight; Rhizoctonia solani Kuhn; secondary metabolites; bioactivities; in vitro phytotoxic activity; ANTIOXIDANT ACTIVITIES; ENDOPHYTIC FUNGUS; BIOACTIVITY; PLANTS;

D O I：

10.1016/S2095-3119(14)60905-9

中图分类号：

S [农业科学];

学科分类号：

09 ;

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.

引用

页码：80 / 87

页数：8

共 29 条

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