Journal of Tropical Oceanography >
QSI activity-oriented isolation of metabolites from Fusarium solanum
Copy editor: LIN Qiang
Received date: 2018-09-25
Request revised date: 2018-11-21
Online published: 2019-06-17
Supported by
Natural Science Foundation for College and University of Jiangsu Province(15KJB170020)
Opening Project of Zhejiang Provincial Top Key Discipline of Pharmaceutical Sciences(201707)
Yangzhou University Incubation Foundation(2017CXJ050)
Copyright
In this study, we investigated the metabolites from coastal mud-derived fungus WH7-2 by using the quorum sensing inhibitory (QSI) activity-oriented approach. The strain WH7-2 was identified as F. solani by analyzing its morphological characteristics and internal transcribed spacer (ITS) sequence. Chemical investigation of the rice fermentation product led to the isolation of 11 compounds. Their structures were elucidated as (2E, 5E)-3, 5, 7-trimethyl-2, 5-octadienoic acid (1), mixtures of unsaturated fatty acid ester (2, 3 and 4), 3-methyl ether fusarubin (5), Anhydrofusarubin (6), (22E)-5α, 8α- epidioxy-ergosta-6, 22-diene-3β-ol(7), (22E)-5α, 8α-epidioxy-ergosta-6, 9(11), 22-triene-3β-ol (8), 3β-hydroxycholest-5-en-7-one(9), 6β-hydroxy-cholest-4-en-3-one(10), and (22E)-cholest-5, 22-dien-3β-ol(11). All compounds were evaluated for their QSI activities, and only the mixtures of unsaturated fatty acid ester (2-4) exhibited QSI activity. All the compounds except 5 and 6 were first reported from F. solani.
Key words: QSI; Fusarium solani; unsaturated fatty acid ester; steroid; fusarubin
JI Yubin , ZHANG Zhe , ZHANG Weihao , WANG Hu , PAN Ying , JIANG Wei . QSI activity-oriented isolation of metabolites from Fusarium solanum[J]. Journal of Tropical Oceanography, 2019 , 38(3) : 98 -103 . DOI: 10.11978/2018096
表1 化合物2、3和4的GC-MS分析结果Tab. 1 GC-MS analysis of compounds 2, 3 and 4 |
化合物编号 | 保留时间/min | 分子式 | 分子量 | 名称 | 匹配度/℅ |
---|---|---|---|---|---|
2 | 22.4 | C17H28O2 | 264 | Methyl 7,10,13-hexadecatrienoate | 85.3 |
3 | 23.1 | C17H28O2 | 264 | Methyl 8,11,14-hexadecatrienoate | 89.2 |
4 | 24.5 | C18H30O2 | 278 | ethyl 6,9,12-hexadecatrienoate | 95.3 |
The authors have declared that no competing interests exist.
作者已声明无竞争性利益关系。
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