数字农科院2.0

Purification and Identification of Two Antifungal Cyclic Peptides Produced by Bacillus amyloliquefaciens L-H15

文献类型： 外文期刊

作者： Han, Yuzhu;Zhang, Bao;You, Chengzhen;Li, Pinglan;Yu, Yaqiong;Shang, Qingmao;Han, Yuzhu;Shen, Qian

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关键词： Bacillus amyloliquefaciens;Biological control;Antifungal compounds;Cyclic peptides;Mass spectrometry

期刊名称： APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY

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收录情况： SCI

摘要： Bacillus amyloliquefaciens L-H15 with broad spectrum antifungal activity was used as a biocontrol agent to suppress Fusarium oxysporum and other soil-borne fungal plant pathogens. Two antifungal fractions were isolated by bioactivity-guided reversed-phase high-performance liquid chromatography. The two compounds were identified by tandem Q-TOF mass spectroscopy as C15 Iturin A (1) and a novel cyclic peptide with a molecular weight of 852.4 Da (2). Both compounds showed good inhibitory activities against three plant fungal pathogens in cylinder-plate diffusion assay. To our best knowledge, this is the first report on a cyclic antifungal peptide with a molecular weight of 852.4 Da. The strong antifungal activity suggests that the B. amyloliquefaciens L-H15 and its bioactive components might provide an alternative resource for the biocontrol of plant diseases and sustainable agriculture.

分类号： Q5

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