Phylogenetic diversity of culturable bacteria in surface seawater from the Drake Passage, Antarctica

作者：Li Zhao; Xing Mengxin; Wang Wei; Wang Dan; Zhu Jiancheng; Sun Mi^*

来源：Chinese Journal of Oceanology and Limnology, 2016, 34(5): 952-963.

DOI：10.1007/s00343-016-5132-z

• Antarctic
• surface seawater
• culturable bacteria
• phylogenetic diversity
• catalase activities

The Drake Passage is located between the Antarctic Peninsula and Tierra del Fuego in the south of South America. Surface seawater samples were collected at seven sites in the Drake Passage during the austral summer of 2012. The 16S rRNA sequences were analyzed from 187 isolated bacterial strains. Three phyla, 29 genera and 56 species were identified. The three phyla were Actinobacteria, Firmicutes and Proteobacteria; the Proteobacteria included alpha-Proteobacteria, beta-Proteobacteria and gamma-Proteobacteria. gamma-Proteobacteria, Actinobacteria and Firmicutes were the dominant class or phyla in terms of quantity and species. Gram-positive bacteria (Actinobacteria and Firmicutes) accounted for 57.8% of all types identified. There were nine dominant genera, including Curtobacterium, Staphylococcus, and Halomonas, and 14 dominant species including Curtobacterium flaccumfaciens, Curtobacterium pusillum, and Staphylococcus sciuri. Of the strains identified, 87.2% were catalase positive or weakly positive.

• 出版日期2016-9
• 单位中国水产科学研究院