1887

Abstract

A taxonomic study was carried out on strain PG2S01, isolated from a culture of , a haemolytic, toxin-producing, harmful marine alga. Cells of strain PG2S01 were Gram-negative, strictly aerobic, non-motile, non-fermentative, orange-pigmented, moderately halophilic rods. Growth was observed in the presence of 0.25–7.5 % NaCl and at 10–40 °C. The dominant fatty acids were iso-C, summed feature 3 (Cω7 and/or Cω6), iso-C 3-OH, iso-C 3-OH, iso-C G and iso-C 3-OH. The major polar lipids were phosphatidylethanolamine and several unidentified aminolipids, phospholipids and other lipids. The G+C content of the chromosomal DNA was 44.6 mol%. 16S rRNA gene sequence comparison showed that strain PG2S01 was most closely related to UST20020801 (88.9 % 16S rRNA gene sequence similarity); levels of similarity between strain PG2S01 and the type strains of recognized representatives of genera in the family were <88 %. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain PG2S01 formed a distinct evolutionary lineage within the family . Strain PG2S01 was distinguishable from members of phylogenetically related genera by differences in several phenotypic properties. On the basis of phenotypic data and phylogenetic inference, strain PG2S01 represents a novel species in a new genus in the family for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is PG2S01 ( = CCTCC AB 209288  = LMG 25704  = MCCC 1F01079). An emended description of Lau 2005 is also proposed.

Funding
This study was supported by the:
  • National Natural Science Foundation of China (Award 40930847, 31070442, 30800033, 31070101)
  • Program for Changjiang Scholars and Innovative Research Team in University (Award 41121091)
  • MEL Visiting Fellowship of State Key Laboratory of Marine Environmental Science, Xiamen University (Award MELRS1124)
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2013-03-01
2024-05-07
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