Bacterioplanes sanyensis gen. nov., sp. nov., a PHB-accumulating bacterium isolated from a pool of Spirulina platensis cultivation
文摘
A Gram-negative, poly-3-hydroxybutyrate-accumulating rod bacterium, strain GYP-2T, was isolated from a pool of marine Spirulina platensis cultivation, Sanya, China. Growth was observed at 10-5?°C and pH 6-0 in the presence of 1-0?% (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the new isolate belonged to Gammaproteobacteria and displayed 93.8-5.3?% 16S rRNA gene sequences similarities to members of the genera Thalassolituus, Oleibacter, and Oceanobacter, but house-keeping gene gyrB (encode DNA gyrase beta subunit) demonstrated that the new isolate was distantly related to Thalassolituus, Oleibacter, and Oceanobacter species (only 77-3?% gene gyrB sequences similarities).The G+C content of genomic DNA was 55?mol%. The major respiratory quinone was Q-9, while that for Oceanobacter kriegii LMG 6238T was Q-8. Major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, and phosphatidylethanolamine. On the basis of its physiological, chemotaxonomic, and molecular properties, strain GYP-2T is suggested to represent a novel species of a new genus in Gammaproteobacteria, for which the name Bacterioplanes sanyensis gen. nov., sp. nov. is proposed. The type strain is GYP-2T (=CGMCC 1.12392T=KCTC 32220T).