TY - JOUR
T1 - Associations among rhizobial chromosomal background, nod genes, and host plants based on the analysis of symbiosis of indigenous rhizobia and wild legumes native to Xinjiang
AU - Han, Tian Xu
AU - Tian, Chang Fu
AU - Wang, En Tao
AU - Chen, Wen Xin
N1 - Funding Information:
We thank Prof. Fu Suo Zhang for providing fund for nodule collection and Prof. Ge Hong Wei for providing seeds of some wild leguminous plants. We also very thank Dr. Li Li Han for her kind help in experiments. This work was supported by National Basic Research Program of China (2006CB100206), National Program for Basic S & T Platform Construction (2005DKA21201-10), and National Natural Science Foundation of China (30670001 and 30400001). ETW was supported by the project of SIP 20070538 and 20080322 authorized by IPN, México.
PY - 2010
Y1 - 2010
N2 - The associations among rhizobia chromosomal background, nodulation genes, legume plants, and geographical regions are very attractive but still unclear. To address this question, we analyzed the interactions among rhizobia rDNA genotypes, nodC genotypes, legume genera, as well as geographical regions in the present study. Complex relationships were observed among them, which may be the genuine nature of their associations. The statistical analyses indicate that legume plant is the key factor shaping both rhizobia genetic and symbiotic diversity. In the most cases of our results, the nodC lineages are clearly associated with rhizobial genomic species, demonstrating that nodulation genes have co-evolved with chromosomal background, though the lateral transfer of nodulation genes occurred in some cases in a minority. Our results also support the hypothesis that the endemic rhizobial populations to a certain geographical area prefer to have a wide spectrum of hosts, which might be an important event for the success of both legumes and rhizobia in an isolated region.
AB - The associations among rhizobia chromosomal background, nodulation genes, legume plants, and geographical regions are very attractive but still unclear. To address this question, we analyzed the interactions among rhizobia rDNA genotypes, nodC genotypes, legume genera, as well as geographical regions in the present study. Complex relationships were observed among them, which may be the genuine nature of their associations. The statistical analyses indicate that legume plant is the key factor shaping both rhizobia genetic and symbiotic diversity. In the most cases of our results, the nodC lineages are clearly associated with rhizobial genomic species, demonstrating that nodulation genes have co-evolved with chromosomal background, though the lateral transfer of nodulation genes occurred in some cases in a minority. Our results also support the hypothesis that the endemic rhizobial populations to a certain geographical area prefer to have a wide spectrum of hosts, which might be an important event for the success of both legumes and rhizobia in an isolated region.
UR - http://www.scopus.com/inward/record.url?scp=77950568139&partnerID=8YFLogxK
U2 - 10.1007/s00248-009-9577-x
DO - 10.1007/s00248-009-9577-x
M3 - Artículo
SN - 0095-3628
VL - 59
SP - 311
EP - 323
JO - Microbial Ecology
JF - Microbial Ecology
IS - 2
ER -