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题名: Diversity and Active Mechanism of Fengycin-Type Cyclopeptides from Bacillus subtilis XF-1 Against Plasmodiophora brassicae
作者: Li Xing-Yu1; Mao, Zi-Chao1; Wang YueHu(王跃虎)2; Wu, Yi-Xing1; He, Yue-Qiu1; Long, Chun-Lin2, 3
刊名: JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
关键词: Clubroot disease ; fungitoxic activity ; biocontrol ; dehydroxyfengycin ; chromatography separation
英文摘要: Bacillus subtilis XF-1, a strain with demonstrated ability to control clubroot disease caused by Plasmodiophora brassicae, was studied to elucidate its mechanism of antifungal activity against P brassicae. Fengycin-type cydopeptides (FTCPs), a well-known class of compounds with strong fungitoxic activity, were purified by acid precipitation, methanol extraction, and chromatographic separation. Eight homologs of fengycin, seven homologs of dehydroxyfengycin, and six unknown FTCPs were characterized with LC/ESI-MS, LC/ESI-MS/MS, and NMR. FTCPs (250 mu/ml) were used to treat the resting spores of P. brassicae (10(7)/ml) by detecting leakage of the cytoplasm components and cell destruction. After 12 h treatment, the absorbencies at 260 nm (A(260)) and at 280 nm (A(280)) increased gradually to approaching the maximum of absorbance, accompanying the collapse of P. brassicae resting spores, and nearly no complete cells were observed at 24 h treatment. The results suggested that the cells could be cleaved by the FTCPs of B. subtilis XF-1, and the diversity of FTCPs was mainly attributed to a mechanism of clubroot disease biocontrol.
出版日期: 2013-03-01
卷号: 23, 期号:3, 页码:313-321
语种: 英语
收录类别: SCI
学科分类: Biotechnology & Applied Microbiology; Microbiology
ISSN号: 1017-7825
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/16485
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Yunnan Agr Univ, Key Lab Agr Biodivers & Pests Control, Kunming 650201, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Peoples R China
3.Minzu Univ China, Coll Life & Environm Sci, Beijing 100081, Peoples R China

Recommended Citation:
Li Xing-Yu; Mao, Zi-Chao; Wang, Yue-Hu; Wu, Yi-Xing; He, Yue-Qiu; Long, Chun-Lin.Diversity and Active Mechanism of Fengycin-Type Cyclopeptides from Bacillus subtilis XF-1 Against Plasmodiophora brassicae,JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY,2013,23(3):313-321
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