不同来源的快生型大豆根瘤菌质粒组成的多样性  

SINORHIZOBIUM FREDII STRAINS FROM DIFFERENT GEOGRAPHICAL ORIGINS AND THE DIVERSITY OF THEIR PLASMID PROFILES

作　　者：葛诚[1] 徐玲玫[1] 樊蕙[1] 江木兰[2] 张学江[2] 

机构地区：[1]中国农业科学院土壤肥料研究所 [2]中国农业科学院油料作物研究所

出　　处：《微生物学报》1991年第4期325-328,共4页Acta Microbiologica Sinica

基　　金：国家自然科学基金

摘　　要：快生型大豆根瘤菌是亚洲特有的固氮资源,在我国分布广泛。近几年对它的研究进展迅速,表现了重要的理论价值和实用意义。但是对不同地理和品种来源的快生型大豆根瘤菌的分布频率和质粒分析研究较少。尤其是质粒组成,以往的研究仅局限于少数菌株。作者从我国不同地区的大豆品种上采瘤进行分离鉴定,比较了分离频率和菌株的质粒图。Two kinds of soybean rhizobia were ob-tained from different soybean culrivars grownin 4 provinces in China.The isolates fromHenan (Shangqiu) and Hubei (Wuhan) pro-vinces were both Sinorhizobium fredii andBradyrhizobium japonicum.Whereas thosefrom Shanxi (Taiyuan) province were allSinorhizobium fredii and Heilongjiang (Jia-musi) province all Bradyrhizobium japon-icum.The symbiosis of the Sinorhizobium fr-edii strains with their original hosts and theNorth American soybean cultivars were signi-ficantly different.A great diversity in num-ber and size of plasmids was obtained in 186Sinorhizobium fredii strains examined,whichwere from 4 origins.And the strains fromeach origin may be put into 10—26 groups ac-cording to their plasmid profiles.There ap-peared to be a certain relationship betweenthe plasmid profiles and geographical origisof the strains.

关 键 词：根瘤菌 大豆根瘤菌 质粒 

分 类 号：Q939.114[生物学—微生物学]