Antonie van Leeuwenhoek

, Volume 103, Issue 2, pp 347–355

Albirhodobacter marinus gen. nov., sp. nov., a member of the family Rhodobacteraceae isolated from sea shore water of Visakhapatnam, India

  • Nupur
  • Bhumika Vaidya
  • Naga Radha Srinivas Tanuku
  • Anil Kumar Pinnaka
Original Paper

Abstract

A novel marine, Gram-negative, rod-shaped bacterium, designated strain N9T, was isolated from a water sample of the sea shore at Visakhapatnam, Andhra Pradesh (India). Strain N9T was found to be positive for oxidase and catalase activities. The fatty acids were found to be dominated by C16:0, C18:1ω7c and summed in feature 3 (C16:1ω7c and/or C16:1ω6c). Strain N9T was determined to contain Q-10 as the major respiratory quinone and phosphatidylethanolamine, phosphatidylglycerol, two aminophospholipids, two phospholipids and four unidentified lipids as polar lipids. The DNA G+C content of the strain N9T was found to be 63 mol%. 16S rRNA gene sequence analysis indicated that Rhodobacter sphaeroides, Rhodobacter johrii, Pseudorhodobacter ferrugineus, Rhodobacter azotoformans, Rhodobacter ovatus and Pseudorhodobacter aquimaris were the nearest phylogenetic neighbours, with pair-wise sequence similarities of 95.43, 95.36, 94.24, 95.31, 95.60 and 94.74 %, respectively. Phylogenetic analysis showed that strain N9T formed a distinct branch within the family Rhodobacteraceae and clustered with the clade comprising species of the genus Pseudorhodobacter, together with species of the genera Roseicitreum, Roseinatronobacter, Roseibaca and Rhodobaca. Species of the genus Pseudorhodobacter are phylogenetically close with a 16S rRNA gene sequence dissimilarity of 5.9–7.3 % (92.7–94.1 % similarity). Based on the above-mentioned phenotypic characteristics and on phylogenetic inference, strain N9T is proposed as a representative of a new genus and a novel species of the family Rhodobacteraceae as Albirhodobacter marinus gen. nov., sp. nov. The type strain of Albirhodobacter marinus is N9 (= MTCC 11277T = JCM 17680T).

Keywords

Albirhodobacter marinus 16S rRNA gene based phylogeny Chemotaxonomy 

Supplementary material

10482_2012_9814_MOESM1_ESM.docx (117 kb)
Supplementary material 1 (DOCX 117 kb)

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Nupur
    • 1
  • Bhumika Vaidya
    • 1
  • Naga Radha Srinivas Tanuku
    • 2
    • 3
  • Anil Kumar Pinnaka
    • 1
  1. 1.Microbial Type Culture Collection and Gene BankInstitute of Microbial Technology (CSIR)ChandigarhIndia
  2. 2.National Institute of Oceanography (CSIR), Regional CentreKochiIndia
  3. 3.National Institute of Oceanography (CSIR), Regional CentreVisakhapatnamIndia

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