title: Novel alphaproteobacterial root nodule symbiont associated with Lupinus texensis.
abstract: Phylogenetic analysis of rRNA gene, recA, nodA, nifD, and nifH sequences suggested that nitrogen-fixing symbionts from two populations of Lupinus texensis acquired the capacity for nodule symbiosis separately from other rhizobia in the alphaproteobacteria. Their closest 16S rRNA relatives were the nonsymbiotic taxa Chelatococcus, Bosea, and Balneomonas.
authors.affiliation: Department of Biological Sciences, State University of New York, Binghamton, NY 13902, USA.
authors.forename: Cheryl P
authors.initials: CP
authors.lastname: Andam
authors.forename: Matthew A
authors.initials: MA
authors.lastname: Parker
mesh_terms: D020561:Alphaproteobacteria / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D020459:Genes, rRNA; D031297:Lupinus / Q000382:microbiology*; D009586:Nitrogen Fixation / Q000235:genetics*; D010802:Phylogeny; D018517:Plant Roots / Q000382:microbiology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D013559:Symbiosis
chemical_list: D001426:Bacterial Proteins; D012336:RNA, Ribosomal, 16S