Gramella portivictoriae sp. nov., a novel member of the family Flavobacteriaceae isolated from marine sediment

A yellow-pigmented, Gram-negative, slowly gliding, rod-shaped, strictly aerobic bacterium (UST040801-001^T) was isolated from marine sediment. The DNA G+C content was 39.9 mol%. The predominant fatty acids were a15:0, i15:0, i15:0 3-OH, i17:1 ω9c, i17:0 3-OH and summed feature 3, comprising i15:0 2-OH and/or 16:1 ω7c (altogether representing 76.2% of the total). MK-6 was the only respiratory quinone. Flexirubin-type pigments were not produced. Phylogenetic analysis based on 16S rRNA gene sequences indicated that Gramella echinicola KMM 6050^T (the only species in the genus) was the closest relative of UST040801-001^T, sharing 98.0% sequence similarity. The DNA-DNA relatedness between UST040801-001^T and Gramella echinicola KMM 6050^T was 13%. Strain UST040801-001^T can be distinguished from G. echinicola by means of 11 phenotypic traits. The results of molecular and phenotypic analyses suggested that UST040801-001^T represents a novel species of Gramella. The name Gramella portivictoriae sp. nov. is proposed for this bacterium, with UST040801-001^T (= NRRL 41137^T = JCM 13192^T) as the type strain.