中国农业科学 ›› 2010, Vol. 43 ›› Issue (17): 3547-3554 .doi: 10.3864/j.issn.0578-1752.2010.17.008

• 植物保护 • 上一篇    下一篇

枯草芽孢杆菌BAB-1产脂肽类及挥发性物质的分离和鉴定

李宝庆,鹿秀云,郭庆港,钱常娣,李社增,马平

  

  1. (河北省农林科学院植物保护研究所/河北省农业有害生物综合防治工程技术研究中心)
  • 收稿日期:2010-02-01 修回日期:2010-03-13 出版日期:2010-09-01 发布日期:2010-09-01
  • 通讯作者: 马平

Isolation and Identification of Lipopeptides and Volatile Compounds Produced by Bacillus subtilis Strain BAB-1

LI Bao-qing, LU Xiu-yun, GUO Qing-gang, QIAN Chang-di, LI She-zeng, MA Ping
  

  1. (河北省农林科学院植物保护研究所/河北省农业有害生物综合防治工程技术研究中心)
  • Received:2010-02-01 Revised:2010-03-13 Online:2010-09-01 Published:2010-09-01
  • Contact: MA Ping

摘要:

【目的】对枯草芽孢杆菌Bacillus subtilis菌株BAB-1产生的脂肽类物质和挥发性物质进行分离鉴定和抑菌活性研究。【方法】采用HPLC和MALDI-TOF-MS对脂肽类物质进行分离纯化和鉴定;采用GC-MS对挥发性物质进行鉴定。【结果】HPLC分析表明,菌株BAB-1产生的脂肽类物质由LP-1、LP-2、LP-3三类组分组成,其中LP-2起主要抑菌作用。MALDI-TOF-MS质谱分析表明,LP-1为surfactin(C13—C15),LP-2为fengycin A(C14—C15)和fengycin B(C14—C18),LP-3成分未能确定。GC-MS结果表明,菌株BAB-1产生的挥发性物质由多种成分组成,主要为醇类、酮类、酸类、胺类和烷烃类等。【结论】枯草芽孢杆菌菌株BAB-1能够产生脂肽类物质和挥发性物质,并且这两类物质都具有较强的抑菌活性。

关键词: 枯草芽孢杆菌, 脂肽, 挥发性物质, 抑菌活性

Abstract:

【Objective】 The objective of this study was to isolate and identify the lipopeptides and volatile compounds produced by Bacillus subtilis strain BAB-1, and to analyze their antifungal activities. 【Method】 Lipopepetide compounds were isolated, purified and identified by using HPLC and MALDI-TOF-MS techniques, and the volatile compounds (VCs) were identified by using GC-MS method. 【Result】 Three fractions of the lipopeptides, LP-1, LP-2 and LP-3, were collected, among which LP-2 showed the major antifungal activity. According to the mass spectra analysis, LP-1 was determined to be identical to surfactin, varying in the length of the fatty acid chain moiety from C13 to C15. LP-2 consisted of fengycin A (C14—C15) and fengycin B (C14—C18), and LP-3 remained undetermined. Many different kinds of VCs were identified, such as alcohols, ketones, acids, amines, alkanes and so on. 【Conclusion】 B. subtilis strain BAB-1 can produce lipopeptides and VCs both with strong antifungal activities.

Key words: Bacillus subtilis, lipopeptide, volatile compound, inhibition activity