Swarming motility in undomesticated Bacillus subtilis

被引：401

作者：

Kearns, DB ^{[1
]}

Losick, R ^{[1
]}

机构：

[1] Harvard Univ, Dept Mol & Cellular Biol, Cambridge, MA 02138 USA

来源：

MOLECULAR MICROBIOLOGY | 2003年 / 49卷 / 03期

关键词：

D O I：

10.1046/j.1365-2958.2003.03584.x

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Swarming motility was identified and characterized in an undomesticated strain of Bacillus subtilis. Rapid surface migration was preceded by a cell density-dependent lag period, which could be eliminated if actively swarming cells were used as the inoculum. The leading edge of the swarm was characterized by multicellular rafts of highly flagellated cells. Flagellum biosynthesis and surfactant production were required for swarming. Swarming was not found in any of several standard laboratory strains. Laboratory strains are characteristically unable to produce surfactant, but such a strain remained unable to swarm even when surfactant was provided by extracellular complementation. We conclude that robust swarming is a feature of undomesticated B. subtilis and that this behaviour has been lost or attenuated in laboratory strains through the accumulation of multiple genetic defects.

引用

页码：581 / 590

页数：10

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