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Int J Syst Evol Microbiol 55 (2005), 2497-2500; DOI  10.1099/ijs.0.63824-0
© 2005 International Union of Microbiological Societies

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

Stanley C. K. Lau1, Mandy M. Y. Tsoi1, Xiancui Li1, Ioulia Plakhotnikova1, Sergey Dobretsov1, Po-Keung Wong2 and Pei-Yuan Qian1

1 Coastal Marine Laboratory/Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR
2 Department of Biology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR

Correspondence
Pei-Yuan Qian
boqianpy{at}ust.hk

A yellow-pigmented, Gram-negative, slowly gliding, rod-shaped, strictly aerobic bacterium (UST040801-001T) 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{omega}9c, i17 : 0 3-OH and summed feature 3, comprising i15 : 0 2-OH and/or 16 : 1{omega}7c (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 6050T (the only species in the genus) was the closest relative of UST040801-001T, sharing 98·0 % sequence similarity. The DNA–DNA relatedness between UST040801-001T and Gramella echinicola KMM 6050T was 13 %. Strain UST040801-001T can be distinguished from G. echinicola by means of 11 phenotypic traits. The results of molecular and phenotypic analyses suggested that UST040801-001T represents a novel species of Gramella. The name Gramella portivictoriae sp. nov. is proposed for this bacterium, with UST040801-001T (=NRRL 41137T=JCM 13192T) as the type strain.

Published online ahead of print on 29 July 2005 as DOI 10.1099/ijs.0.63824-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain UST040801-001T is DQ002871.

An electron micrograph of cells of strain UST040801-001T, the results of API 20E, API 20NE and API ZYM tests and details of the carbon sources tested are available as supplementary material in IJSEM Online.






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