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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Dai, J. Liu, X. Wang, Y. |
| Spatial Coverage | China |
| Description | Country affiliation: China Author Affiliation: Dai J ( Key Laboratory of the Ministry of Education for the Conservation and Utilization of Special Biological Resources of Western China, Ningxia, China.) |
| Abstract | Rhizobia are soil bacteria with the capacity to induce nitrogen-fixing nodules on the roots or stems of legume plants. A total of 40 bacterial isolates from the root nodules of Caragana microphylla growing in desert soil in Ningxia, China, were analyzed for genetic diversity and phylogenetic position. These isolates were classified into 7 types of 16S ribosomal DNA (rDNA) using polymerase chain reaction-restriction fragment length polymorphism analysis. They were grouped into 4 clades, Rhizobium-Agrobacterium, Sinorhizobium, Phyllobacterium, and Bradyrhizobium, when the phylogenies of 16S rDNA, recA, and atpD genes were applied. Phylogenetic analysis showed that the tree generated from the 16S rDNA sequencing agreed with that produced from the recA and atpD genes. By analyzing phylogenetic relationship using the 3 loci, the isolates in the branches of Phyllobacterium and Sinorhizobium could be identified as P. brassicacearum and S. meliloti. The isolates in the branch of Rhizobium-Agrobacterium were the most abundant microsymbiont of C. microphylla and were designated R. leguminosarum, R. galegae, R. alamii, and A. tumefaciens. Two isolates with low sequence similarity to the known species of Bradyrhizobium might be novel species in this genus. |
| e-ISSN | 16765680 |
| Journal | Genetics and Molecular Research |
| Issue Number | 3 |
| Volume Number | 11 |
| Language | English |
| Publisher | Fundação de Pesquisas Científicas de Ribeirão Preto |
| Publisher Date | 2012-08-16 |
| Publisher Place | Brazil |
| Access Restriction | Open |
| Subject Keyword | Caragana Growth & Development Microbiology Desert Climate Genetic Variation Phylogeny Rhizobium Genetics Isolation & Purification Genes, Bacterial Polymerase Chain Reaction Polymorphism, Restriction Fragment Length Rna, Ribosomal, 16s Sequence Analysis, Dna Research Support, Non-u.s. Gov't Discipline Genetics Discipline Molecular Biology Discipline Bioinformatics |
| Content Type | Text |
| Resource Type | Article |
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