Novel associations between rhizobial populations and legume species within the genera Lathyrus and Oxytropis grown in the temperate region of China  

作　　者：SUI XinHua, HAN LiLi, WANG EnTao, JIANG Feng, LIU YiHai & CHEN WenXin State Key Laboratory for AgroBiotechnology, Key Laboratory of Agro-Microbial Resource and Application, Ministry of Agricul- ture/College of Biological Sciences, China Agricultural University, Beijing 100193, China 

出　　处：《Science China(Life Sciences)》2009年第2期182-192,共11页中国科学（生命科学英文版）

基　　金：Supported by the National Program for Basic S&T Platform Construction (Grant No. 2005DKA21201-1);the National Natural Science Foundation of China (Grant No. 30670001);the National Basic Research Program of China (Grant No. 2006CB100206)

摘　　要：Fifty rhizobial isolates of Lathyrus and Oxytropis collected from northern regions of China were studied in their genotypic characterization based upon analyses of ARDRA, 16S-23S IGS PCR-RFLP, TP-RAPD, MLEE, sequences of 16S rDNA gene and housekeeping genes of atpD, recA and glnII. The results demonstrated that most of the Lathyrus rhizobia belonged to Rhizobium and most of the Oxytropis rhizobia belonged to Sinorhizobium. A novel group of Rhizobium sp. I and S. meliloti were identified as the main microsymbionts respectively associated with Lathyrus and Oxytropis species in the collection area, which were new associations between rhizobia and the mentioned hosts. This study also provides new evidence for biogeography of rhizobia.Fifty rhizobial isolates of Lathyrus and Oxytropis collected from northern regions of China were studied in their genotypic characterization based upon analyses of ARDRA, 16S-23S IGS PCR-RFLP, TP-RAPD, MLEE, sequences of 16S rDNA gene and housekeeping genes of atpD, recA and glnII. The results demonstrated that most of the Lathyrus rhizobia belonged to Rhizobium and most of the Oxytropis rhizobia belonged to Sinorhizobium. A novel group of Rhizobium sp. I and S. meliloti were identified as the main microsymbionts respectively associated with Lathyrus and Oxytropis species in the collection area, which were new associations between rhizobia and the mentioned hosts. This study also provides new evidence for biogeography of rhizobia.

关 键 词：LATHYRUS OXYTROPIS RHIZOBIA GENOTYPIC diversity northern China 

分 类 号：S54[农业科学—作物学]