Spatial distribution, diversity and composition of bacterial communities in sub-seafloor fluids at a deep-sea hydrothermal field of the Suiyo Seamount

Shingo Kato, Kurt Hara, Hiroko Kasai, Takashi Teramura, Michinari Sunamura, Jun ichiro Ishibashi, Takeshi Kakegawa, Toshiro Yamanaka, Hiroyuki Kimura, Katsumi Marumo, Tetsuro Urabe, Akihiko Yamagishi

研究成果: ジャーナルへの寄稿学術誌査読

22 被引用数 (Scopus)

抄録

Spatial distribution, diversity, and composition of bacterial communities within the shallow sub-seafloor at the deep-sea hydrothermal field of the Suiyo Seamount, Izu-Bonin Arc, Western Pacific Ocean, were investigated. Fluids were sampled from four boreholes in this area. Each borehole was located near or away from active vents, the distance ranging 2-40 m from active vents. In addition, fluids discharging from a natural vent and ambient seawater were sampled in this area. We extracted DNA from each sample, amplified bacterial 16S rRNA genes by PCR, cloned the PCR products and sequenced. The total number of clones analyzed was 348. Most of the detected phylotypes were affiliated with the phylum Proteobacteria, of which the detection frequency in each clone library ranged from 84.6% to 100%. The bacterial community diversity and composition were different between hydrothermal fluids and seawater, between fluids from the boreholes and the vent, and even among fluids from each borehole. The relative abundances of the phylotypes related to Thiomicrospira, Methylobacterium and Sphingomonas were significantly different among fluids from each borehole. The phylotypes related to Thiomicrospira and Alcanivorax were detected in all of the boreholes and vent samples. Our findings provide insights into bacterial communities in the shallow sub-seafloor environments at active deep-sea hydrothermal vent fields.

本文言語英語
ページ(範囲)1844-1855
ページ数12
ジャーナルDeep-Sea Research Part I: Oceanographic Research Papers
56
10
DOI
出版ステータス出版済み - 10月 2009

!!!All Science Journal Classification (ASJC) codes

  • 海洋学
  • 水圏科学

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