Correlation between diverse cyclic lipopeptides production and regulation of growth and substrate utilization by Bacillus subtilis strains in a particular habitat

被引：116

作者：

Mukherjee, AK ^{[1
]}

Das, K ^{[1
]}

机构：

[1] Tezpur Univ, ONGC Ctr Petr Biotechnol, Dept Mol Biol & Biotechnol, Tezpur 784028, India

来源：

FEMS MICROBIOLOGY ECOLOGY | 2005年 / 54卷 / 03期

关键词：

antimicrobial activity; Bacillus subtilis; cell surface hydrophobicity; cyclic lipopeptides; iturin; surfactin; biosurfactants;

D O I：

10.1016/j.femsec.2005.06.003

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The two Bacillus subtilis strains (DM-03 and DM-04) were isolated from two extremely different habitats; one from the traditional fermented food and another one from a petroleum contaminated soil sample. These strains produced quantitatively and qualitatively, different cyclic lipopeptides isoforms under laboratory culture conditions. MALDI-TOF mass spectral analysis revealed that lipopeptide profile varied according to the producing B. subtilis strains; iturins and surfactins isoforms were pre-dominant cyclic lipopeptides produced by B. subtilis DM-03 and DM-04 strains, respectively. A comparative study showed that these strains possessed distinct preferences for the carbon and nitrogen substrates, temperature and pH for optimal growth and biosurfactant production. Our study documented that the cyclic lipopeptide isoforms produced by the respective strains played an important role in the utilization of available hydrophobic substrate(s) from their natural habitats and conferred some kind of competitive advantage to the producing B. subtilis strains in their parent ecological niche. (c) 2005 Federation of European Microbiological Societies. Published by Elsevier B.V.. All rights reserved.

引用

页码：479 / 489

页数：11

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