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The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations.
TLDR
The 16S rRNA gene sequences were determined by PCR direct sequencing and were compared with more than 80 previously determined clostridial sequences and the previously published sequences of representative species of other low- G + C-content gram-positive genera, thereby providing an almost complete picture of the genealogical interrelationships of theClostridia.
Methylotrophic MethylobacteriumBacteria Nodulate and Fix Nitrogen in Symbiosis with Legumes
TLDR
The discovery of a fourth rhizobial branch involving bacteria of the Methylobacterium genus is reported, which is closely related to Bradyrhizobium NodA, suggesting that this gene was acquired by horizontal gene transfer.
Advantages of multilocus sequence analysis for taxonomic studies: a case study using 10 housekeeping genes in the genus Ensifer (including former Sinorhizobium).
TLDR
The MLSA data support the suggestion that Ensifer xinjiangensis is a later heterotypic synonym of Ensifer fredii and indicate that housekeeping gene sequencing is superior to DNA-DNA hybridization for the assessment of genetic relatedness between Ensifer species.
Polyphasic Taxonomy in the Genus Burkholderia Leading to an Emended Description of the Genus and Proposition of Burkholderia vietnamiensis sp. nov. for N2-Fixing Isolates from Rice in Vietnam
TLDR
The taxonomic position of nitrogen-fixing strains that were isolated from rhizosphere macerates of rice cultivated in the Binh Thanh region of Vietnam was determined by using polyphasic taxonomy, and it was concluded that the genus Burkholderia should be restricted to the following species.
Burkholderia tuberum sp. nov. and Burkholderia phymatum sp. nov., nodulate the roots of tropical legumes.
TLDR
The taxonomic status of five root nodule isolates from tropical legumes was determined using a polyphasic taxonomic approach and two isolates were identified as novel Burkholderia species for which it is proposed the names Burk holderia tuberum sp.
NOTES: Comamonadaceae, a New Family Encompassing the Acidovorans rRNA Complex, Including Variovorax paradoxus gen. nov., comb. nov., for Alcaligenes paradoxus (Davis 1969)
TLDR
A new family, the Comamonadaceae, is proposed for the organisms belonging to the acidovorans rRNA complex in the beta subclass of the Proteobacteria, as well as a number of phylogenetically misnamed Aquaspirillum and phytopathogenic Pseudomonas species.
Polyphasic Taxonomy of Rhizobia: Emendation of the Genus Sinorhizobium and Description of Sinorhizobium meliloti comb. nov., Sinorhizobium saheli sp. nov., and Sinorhizobium teranga sp. nov.
TLDR
Two of the clusters identified on the basis of SDS-PAGE data are genotypically and phenotypically distinct groups that belong on the Rhizobium meliloti-RhZobium fredii rRNA branch and contains strains isolated in Africa, in Brazil, and in New Zealand from different leguminous species.
Hydrogenophaga, a new genus of hydrogen-oxidizing bacteria that includes Hydrogenophaga flava comb. nov. (formerly Pseudomonas flava), Hydrogenophaga palleronii (formerly Pseudomonas palleronii),
TLDR
The results show that these five yellow-pigmented hydrogen-oxidizing Pseudomonas species are more closely related to each other than to other taxa belonging to the acidovorans rRNA complex.
The taxonomy of rhizobia: an overview
TLDR
An overview of the history of the rhizobia is provided and recent reports of nodulation and nitrogen fixation with legume hosts by bacteria that are outside the traditional rhizobial phylogenetic lineages are reviewed.
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