已有的研究结果表明,在根瘤菌中与结瘤作用有关的结构基因有共同结瘤基因(common nod)和寄主专一性结瘤基因(hsn)。共同结瘤基因nodABC已经在所有研究过的根瘤菌(nizobium),慢生
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从苦豆子根瘤中首次分离出“叶瘤杆菌属”菌株ZY16-1、ZW3-1。它们具有共生结瘤基因(nodA)和固氮基因(nifH),回接苦豆子植株能够形成根瘤。叶瘤杆菌菌株ZY16-1、ZW3-1共生基因的系统发育与M.
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根瘤菌结瘤基因表达后诱导产生结瘤因子。
Nodulation factors are induced when nodulation genes of Rhizobium are expressed.
结瘤基因的系统发育揭示出根瘤菌宿主范围与共同性结瘤基因间比其它基荫的相关性更高。
The phylogenetic studies on nod genes have promulgated that the host range of rhizobia appeared to have a higher interrelationship to the common nod genes than other genes.
在盆栽条件下比较研究了转基因重组根瘤菌与出发菌和参照菌的结瘤与共生固氮效率。
Plant pot experiments were carried out for the recipient strains and their transconjugants to compare their nodulation ability and symbiotic nitrogen fixation efficiency.
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