Int J Syst Evol Microbiol 55 (2005), 1435-1438; DOI 10.1099/ijs.0.63503-0
© 2005 International Union of Microbiological Societies
Azospirillum oryzae sp. nov., a nitrogen-fixing bacterium isolated from the roots of the rice plant Oryza sativa
Cheng-Hui Xie and
Akira Yokota
Institute of Molecular and Cellular Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-Ku, Tokyo 113-0032, Japan
Correspondence
Cheng-Hui Xie
aa37116{at}mail.ecc.u-tokyo.ac.jp
The taxonomic position of the free-living diazotrophic strain COC8T isolated from rice was investigated based on phylogenetic analyses. 16S rRNA gene sequence analyses indicated that strain COC8T was closely related to the genus Azospirillum (96 % similarity). Chemotaxonomic characteristics (G+C content of the DNA 66·8 mol%, Q-10 quinone system, 18 : 1
7c as the major fatty acid and 14 : 0 3-OH and 16 : 0 3-OH as the major hydroxy fatty acids) were also similar to those of the genus Azospirillum. Based on its physiological characteristics, strain COC8T can clearly be differentiated from recognized species of Azospirillum. The name Azospirillum oryzae sp. nov. is proposed to accommodate this bacterial strain; the type strain is COC8T (=IAM 15130T=CCTCC AB204051T).
Abbreviations: PHB, poly-
-hydroxybutyrate
Published online ahead of print on 11 February 2005 as DOI 10.1099/ijs.0.63503-0.
The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA and nifH gene sequences of strain COC8T are AB185396 and AB185395, respectively.
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Copyright © 2005 by the International Union of Microbiological Societies.