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.
出处
《生态学杂志》
CAS
CSCD
北大核心
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
