Adaptation of Salt-tolerant Myxococcus Strains and their Motility Systems to the Ocean Conditions
Adaptation of Salt-tolerant Myxococcus Strains and their Motility Systems to the Ocean Conditions
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DOI：
10.1007/s00248-006-9169-y
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发表时间：
2007-07
影响因子：
3.6
通讯作者：
B. Wang;Wei Hu;Hong Liu;Cui-ying Zhang;Jing-yi Zhao;De-ming Jiang;Zhi-hong Wu;Yue-zhong Li
中科院分区：
文献类型：
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作者：
B. Wang;Wei Hu;Hong Liu;Cui-ying Zhang;Jing-yi Zhao;De-ming Jiang;Zhi-hong Wu;Yue-zhong Li
越来越多的研究表明，黏菌能够在海水条件下生存，但海水条件会降低黏菌的子实体形成能力，也会降低黏菌的冒险(A)和社会(S)运动系统。为了了解耐盐黏菌对海洋环境的适应机制，我们对10株耐盐黏菌的子实体形成和运动进行了分析。分离株均来自海洋样品，具有不同程度的耐盐性。它们具有双重运动系统，并在适宜的海水浓度下形成子实体。一些高耐盐品种甚至在没有海水的情况下失去了结果能力。在海水的作用下，高耐盐品种的s -运动性增加，而低耐盐品种的s -运动性降低。另一方面，在所有耐盐黏液球菌菌株中均观察到a -运动性，但随着海水的存在而增加或减少。在耐盐黏液球菌菌株中发现的子实体形成能力和运动的感知变化表明黏液细菌的社会行为对海洋环境的生态适应。
More and more studies have indicated that myxobacteria are able to live in seawater conditions, which, however, can decrease the fruiting body formation ability and also the adventurous (A) and social (S) motility systems of the myxobacteria. To learn the adaptation mechanism of the salt-tolerant myxobacteria to marine conditions, we analyzed 10 salt-tolerantMyxococcusstrains of their fruiting body formation and motility. The isolates were from marine samples and possessed different levels of salt tolerance. They had the dual motility system and formed fruiting bodies in the presence of suitable seawater concentrations. Some high salt-tolerant strains even lost their fruiting abilities in the absence of seawater. In response to the presence of seawater, the S-motility was found to be increased in the high salt-tolerants but decreased in the low salt-tolerants. The A-motility, on the other hand, was observed in all the salt-tolerantMyxococcusstrains, but increased or decreased in response to the presence of seawater. Perceived shifts of fruiting body formation abilities and motilities discovered in the salt-tolerantMyxococcusstrains suggested an ecological adaptation of myxobacterial social behaviors to the marine environments.