Extrachromosomal elements of extrachromosomal elements of Paramecium and their extrachromosomal elements.
Extrachromosomal elements of extrachromosomal elements of Paramecium and their extrachromosomal elements.
复制标题
草履虫及其染色体外元素的染色体外元素。
DOI：
10.1007/978-1-4684-5251-8_21
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Kanabrocki,JA
中科院分区：
文献类型：
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作者：
Quackenbush,RL;Cox,BJ;Kanabrocki,JA
草履虫细菌属的成员(通常称为卡帕颗粒)是草履虫的专性内共生体。它们赋予纤毛虫宿主杀手特征，如果人们松散地使用这个词，这些细菌可以被认为是杀手草履虫的染色体外分子。事实上，纤毛虫成员最初由T.M.SonneBorn于1943年(21)描述为细胞质遗传元件。在相信这些细菌是细胞质基因的情况下，桑尼伯恩按照当时命名细胞质遗传元素的惯例，将它们命名为kappa。桑尼伯恩关于kappa的工作被认为是经典的，对现代生物学的发展产生了相当大的影响，因为它影响了研究人员考虑在其他生物系统中可能存在染色体外遗传元素。随后对草履虫杀手进行的细胞学和遗传学分析证明了卡帕颗粒的细菌性质，这些颗粒现在组成了凯迪氏杆菌属(6，7，9，10，13)。
Members of the bacterial genusCaedibacter(commonly known as kappa particles) are obligate endosymbionts of paramecia. They confer killer traits upon their ciliate hosts, and, if one uses the term loosely, these bacteria can be considered to be extrachromosomal elements of killer paramecia. In fact,Caedibactermembers were originally characterized as cytoplasmic genetic elements by T.M. Sonneborn in 1943 (21). In the belief that these bacteria were cytoplasmic genes, Sonneborn designated them as kappa in keeping with the convention at that time for naming cytoplasmic genetic elements. Sonneborn’s work on kappa is considered to be classic and had considerable impact on the development of modern biology, since it influenced researchers to consider the possible existence of extrachromosomal genetic elements in other biological systems. Subsequent cytological and genetic analyses of killer paramecia demonstrated the bacterial nature of kappa particles which now comprise the genusCaedibacter(6,7,9,10,13).