| Abstract |
A polyphasic taxonomic study was carried out on strain T9W2-OT, isolated from the roots of the aquatic plant Salvinia minima. 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 Chryseobacterium, with 98.8 and 98.5% similarity to Chryseobacterium profundimaris and Chryseobacterium takakiae, respectively. Average nucleotide identity and digital DNA-DNA hybridization with the closest phylogenetic neighbour of T9W2-OT showed differences at the species level, further confirmed by differences in several physiological characteristics. The main fatty acids are iso C15 : 0, iso C17:1 ω9c, iso C17 : 0 3-OH and summed feature 4 (iso-C15 : 0 2-OH and/or C16:1 ω7c). 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 Chryseobacterium as a new species with the name Chryseobacterium salviniae sp. nov., type strain T9W2-OT (=NRRL B-65715T =DSM 118061T).
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