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1 School of Biotechnology, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
2 Institute of Water Quality Control and Waste Management, Technical University of Munich, Am Coulombwall, 85748 Garching, Germany
3 GSFNational Centre for Environment and Health, Institute of Soil Ecology, Ingolstaedter Landstrasse 1, 85764 Neuherberg, Germany
Correspondence
Michael Schloter
schloter{at}gsf.de
A non-pigmented, motile, Gram-negative bacterium designated MTCC 4195T was isolated from surface-sterilized seeds and plant tissue from deep-water rice (Oryza sativa) cultivated in Suraha Tal Lake in northern India. This isolate was shown to reinfect and colonize deep-water rice endophytically. The highest level of 16S rRNA sequence similarity (96.8 %) to strain MTCC 4195T was shown by Ochrobactrum gallinifaecis DSM 15295T. Strain MTCC 4195T utilized
-hydroxybutyric acid, adonitol, D-glucosaminic acid and arabinose as carbon sources, but failed to use gentiobiose or citrate. The cell-wall fatty acids of strain MTCC 4195T were characterized by the presence of a relatively large proportion of C18 : 1
7c and a relative small proportion of C16 : 0 in comparison with Ochrobactrum species. DNADNA relatedness studies showed less than 52 % binding with the DNAs of type strains of other species of the genus Ochrobactrum. On the basis of phenotypic and genotypic characteristics and the results of 16S rRNA gene sequence analysis, the novel species Ochrobactrum oryzae sp. nov. is proposed, with MTCC 4195T (=DSM 17471T) as the type strain.
The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain MTCC 4195T is AM041247.
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