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首页> 外文期刊>Plasmid: An International Journal Devoted to Extrachromosomal Gene Systems >Physiological and biochemical consequences of host-plasmid interaction--a case study with Corynebacterium renale, a multiple cryptic plasmid containing strain.
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Physiological and biochemical consequences of host-plasmid interaction--a case study with Corynebacterium renale, a multiple cryptic plasmid containing strain.

机译:宿主-质粒相互作用的生理和生化后果-以含有多个隐性质粒的肾棒杆菌为例。

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摘要

Corynebacterium renale harbors four small cryptic plasmids, pCR1, pCR2, pCR3 and pCR4, and can be a good system for understanding host-plasmid interactions. In the present study, effect of plasmid loss and their subsequent introduction on various properties of the host was evaluated. Loss of plasmids caused a reduction in bacterial size and also slowed down their growth rate, mu, and respiratory rate, r. Both mu and r values were partially recovered in C. renale R, obtained by retransformation of the cured strain with all the four cryptic plasmids. Further delineation revealed that a 3153bp plasmid pCR2 alone is sufficient for the observed increase in mu in C. renale R. The advantages conferred by the remaining three plasmids may be are two subtle to be seen under laboratory conditions. Overall, the observations point to the gross metabolic crisis in the host partly as a result of loss of plasmids. Based on the findings, a mutualistic relationship between the host and the plasmids resulting from their coevolution is proposed.
机译:肾棒杆菌具有四个小的隐性质粒pCR1,pCR2,pCR3和pCR4,并且可以是了解宿主-质粒相互作用的良好系统。在本研究中,评估了质粒丢失及其随后引入对宿主各种特性的影响。质粒的丢失引起细菌大小的减小,并且也减慢了它们的生长速率μ和呼吸速率r。 mu和r值均在肾小球菌R中部分恢复,而肾小球菌R是通过用所有四个隐性质粒对已固化菌株进行再转化而获得的。进一步的描述表明,单独的3153bp质粒pCR2足以观察到肾小球藻中mu的增加。其余三种质粒带来的优势可能是在实验室条件下可以看到的两个微妙之处。总体而言,这些观察结果表明,宿主体内的新陈代谢危机部分是由于质粒丢失造成的。基于这些发现,提出了宿主与质粒的协同进化所产生的相互关系。

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