| 根瘤菌质粒的研究进展 |
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| 引用本文： | 缪礼鸿,周俊初.根瘤菌质粒的研究进展[J].华中农业大学学报,2007,26(3):428-434. |
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| 作者姓名： | 缪礼鸿 周俊初 |
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| 作者单位： | 1. 武汉工业学院生物工程与技术实验室,武汉,430023
2. 华中农业大学农业微生物学国家重点实验室,武汉,430070 |
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| 基金项目： | 科技部农学教学用微生物资源课题(2005DKA21208-6)资助 |
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| 摘 要： | 快生型根瘤菌中普遍存在1到多个数量不等的内源质粒(indigenous plasmid)。其中,含有根瘤菌结瘤和共生固氮所必需的基因的质粒被称之为共生质粒(pSym);其它的质粒被称为非共生质粒(non-pSym)。根瘤菌的内源质粒一般都非常稳定,能够在不同种属的根瘤菌之间和土壤杆菌中进行转移。根瘤菌质粒在转移、复制过程中可能发生重组等现象。本文综述了根瘤菌共生质粒和非共生质粒的功能,以及根瘤菌质粒的转移、复制等特性。
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| 关 键 词： | 根瘤菌 共生质粒 非共生质粒 |
| 文章编号： | 1000-2421（2007）03-0428-07 |
| 修稿时间： | 2006-11-08 |
Advance on the Study of Rhizobial Plasmid |
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| MIAO Li-hong,ZHOU Jun-chu.Advance on the Study of Rhizobial Plasmid[J].Journal of Huazhong Agricultural University,2007,26(3):428-434. |
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| Authors: | MIAO Li-hong ZHOU Jun-chu |
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| Institution: | 1. Laboratory of Biological Engineering and Technology , Wuhan Polytechnic University, Wuhan 430023, China ; 2. State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China |
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| Abstract: | Fast-growing rhizobia often contain one or more large indigenous plasmids.One of these plasmids,called pSym,carries the nodulation and nitrogen fixation genes necessary for establishing the Rhizobium-legume symbiosis;the other plasmids called non-pSym.In general,rhizobial indigenous plasmids show high stability.Rhizobial indigenous plasmids can be transferred among rhizobia species,to Agrobacterium,and also to other soil bacteria.Recombination may happen in the course of transferring and replication of rhizobial plasmid.Advance on the function of rhizobial symbiotic and nonsymbiotic plasmids,and the character on transferring and replication of rhizobial plasmid are summarized. |
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| Keywords: | rhizobia symbiotic plasmid non-symbiotic plasmid |
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