长白山三种赤杨根瘤内Frankia基因多样性的REP分析  

Genetic diversity analysis of Frankia strains in nodules of three Alnus species from Changbai Mountain by REP fingerprinting

作　　者：唐晓萌[1] 代玉梅[1] 熊智[2] 曹军[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110016 [2]西南林学院,昆明650224

出　　处：《生态学杂志》2004年第3期68-71,共4页Chinese Journal of Ecology

基　　金：国家重点基础研究发展规划项目 (NO 0 0 1CB10 89);中国科学院沈阳应用生态研究所创新项目 (C11AG -SCXZY0 10 6);中国科学院长白山森林生态系统定位研究站资助

摘　　要：利用REP PCR方法研究了长白山不同海拔处 3种赤杨根瘤内Frankia菌基因多样性。结果表明 ,赤杨根瘤内Frankia菌存在丰富的基因多样性。宿主和海拔因素共同影响长白山赤杨属Frankia菌的基因多样性 :东北赤杨Frankia菌的宿主专一性很强 ,西伯利亚赤杨和色赤杨的Frankia菌的有较近的亲缘关系。不同海拔的同种宿主共生的Frankia菌基因类型不同 。The genetic diversity of the Frankia strains in the nodules of Alnus tinctoria,A.mandshurica and A.sibirica growing at different altitude in Changbai Mountain was studied by REP-PCR fingerprinting.The REP-PCR fingerprint patterns revealed that uncultured Frankia strains tested had a high genetic diversity.Host and altitude factors influenced the genetic diversity.Frankia strains from A.mandshurica showed greater specialization toward the host,and Frankia stains from A.sibirica and A.tinctoria had a closer affinity.The Frankia stains from the same alder distributing at different altitude belonged to different REP patterns,and the Frankia stains from A.sibirica and A.tinctoria at the same altitude showed promiscuity.

关 键 词：基因多样性 赤杨 海拔 FRANKIA REP 

分 类 号：S718.5[农业科学—林学]