Revised phylogeny of [i]Rhizobiaceae[/i]: Proposal of the delineation of [i]Pararhizobium gen. nov.[/i], and 13 new species combinations

Seyed Abdollah Mousavi (1, 2) , Anne Willems (3) , Xavier Nesme (4) , Philippe de Lajudie (5) , Kristina Lindstrom (2)

1 Division of Microbiology and Biotechnology, Department of Food and Environmental Sciences, Biocentre 1
2 Department of Environmental Sciences
3 Faculty of Science, Department of Biochemistry and Microbiology, Laboratory of Microbiology
4 LEM - Laboratoire d'Ecologie Microbienne - UMR 5557
5 UMR LSTM - Laboratoire des symbioses tropicales et méditerranéennes

The family Rhizobiaceae accommodates the seven genera Rhizobium, Neorhizobium, Allorhizobium, Agrobacterium, Ensifer (syn. Sinorhizobium), Shinella and Ciceribacter. However, several so-called Rhizobium species do not exhibit robust phylogenetic positions. Rhizobium is extremely heterogeneous and is in need of major revision. Therefore, a phylogenetic examination of the family Rhizobiaceae by multilocus sequence analysis (MLSA) of four housekeeping genes among 100 strains of the family was undertaken. Based on the results we propose the delineation of the new genus Pararhizobium in the Rhizobiaceae family, and 13 new species combinations: Agrobacterium nepotum comb. nov., Agrobacterium pusense comb. nov., Agrobacterium skierniewicense comb. nov., Allorhizobium yids comb. nov., Allorhizobium taibaishanense comb. nov., Allorhizobium paknamense comb. nov., Allorhizobium oryzae comb. nov., Allorhizobium pseudoryzae comb. nov., Allorhizobium borbori comb. nov., Pararhizobium giardinii comb. nov., Pararhizobium capsulatum comb. nov., Pararhizobium herbae comb. nov., and Pararhizobium sphaerophysae comb. nov.

Mots clés: MLSA; housekeeping genes; rhizobiaceae

Domaines: Biodiversité et Ecologie

Seyed Abdollah Mousavi, Anne Willems, Xavier Nesme, Philippe de Lajudie, Kristina Lindstrom. Revised phylogeny of [i]Rhizobiaceae[/i]: Proposal of the delineation of [i]Pararhizobium gen. nov.[/i], and 13 new species combinations. Systematic and Applied Microbiology, 2015, 38 (2), pp.84-90. ⟨10.1016/j.syapm.2014.12.003⟩. ⟨hal-01222893⟩