sp. nov., a bacterium isolated from the roots of the aquatic plant .

A polyphasic taxonomic study was carried out on strain T9W2-O, isolated from the roots of the aquatic plant . This isolate is rod-shaped, forms yellow/orange pigmented colonies and produces the pigment flexirubin. Nearly complete 16S rRNA gene sequence homology related the strain to , with 98.8 and 98.5% similarity to and , respectively. Average nucleotide identity and digital DNA-DNA hybridization with the closest phylogenetic neighbour of T9W2-O showed differences at the species level, further confirmed by differences in several physiological characteristics. The main fatty acids are iso C, iso C, iso C 3-OH and summed feature 4 (iso-C 2-OH and/or C). DNA G+C content is 37.2 mol%. MK-6 is the only menaquinone found, and phosphatidylethanolamine is the dominant polar lipid. Based on the results obtained, this bacterium is assigned to the genus as a new species with the name sp. nov., type strain T9W2-O (=NRRL B-65715 =DSM 118061).