Elucidation of the role of dimethyl sulfoxide respiration for the sulfur circulation in the ocean and Antarctic lakes

2009 Fiscal Year Final Research Report

• Project/Area Number: 19510007
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Hiroshima University
• Principal Investigator: MATSUZAKI Masahiro Hiroshima University, 大学院・理学研究科, 助教 (50294517)
• Co-Investigator(Renkei-kenkyūsha): IMURA Satoshi 国立極地研究所, 研究教育系, 准教授 (90221788) ; KUDOH Sakae 国立極地研究所, 研究教育系, 准教授 (40221931)
• Project Period (FY): 2007 – 2009
• Keywords: 嫌気呼吸 / 硫黄循環 / 南極湖沼 / 気候変動

Research Abstract

16S rRNA clone library analysis was used to examine the biodiversity and community structure in Antarctic salt and freshwater lakes. The bacterial community structures of salt lakes in which haloclines exist differed between these three salt lakes, indicating that there were many unidentified bacteria, and that they were rich in biodiversity. The bacterial communities of eight freshwater lakes formed a simple structure, such as Thiomicrospira sp., which inhabits the ocean in polar regions and fall water around McMurdo Dry Valleys, becomes the predominant genus. Phylogenetic analysis revealed that these bacteria growing in salt and freshwater lakes were closely related genera. These results suggested that these bacterial communities differed based on the salinity.

Research Products

• [Journal Article] Limnological characteristics of vertical structure in the lakes around Syowa Oasis, East Antarctica. (2010)
  • Author(s): Kimura, S., Ban, S., Imura, S., Kudoh, S., Matsuzaki, M.
  • Journal Title: Polar Science Vol.,3 Pages: 262-271
  • Peer Reviewed
• [Journal Article] In situ photochemical activity of the phytobenthic communities in two Antarctic lakes. (2009)
  • Author(s): Kudoh, S., Tanabe, Y., Matsuzaki, M., Imura, S.
  • Journal Title: Polar Biol. Vol.,32,No.11 Pages: 1617-1627
  • Peer Reviewed
• [Presentation] Analysis of bacterial diversity and dimethyl sulfoxide respiring bacteria of Antarctic salt lakes (2009)
  • Author(s): Matsuzaki, M., Wakitani, M., Takahashi, Y., Kasamatsu, N., Kudoh, S.
  • Organizer: Xth SCAR International Biology Symposium
  • Place of Presentation: Hokkaido University, Sapporo
  • Year and Date: 2009-07-30
• [Presentation] 南極塩湖における微生物群集とdmso呼吸細菌の解析 (2009)
  • Author(s): 松崎雅広, 脇谷昌俊, 高橋陽介, 星野保, 笠松伸江
  • Organizer: 第66回日本植物学会中国四国支部大会
  • Place of Presentation: 高知大学
  • Year and Date: 2009-05-16
• [Presentation] 工藤栄南極塩湖における微生物群集とdmso呼吸細菌の解析 (2008)
  • Author(s): 松崎雅広, 脇谷昌俊, 高橋陽介, 星野保
  • Organizer: 第31回極域生物シンポジウム
  • Place of Presentation: 国立極地研究所
  • Year and Date: 2008-12-04
• [Presentation] 工藤栄南極昭和基地周辺の塩湖すりばち池と舟底池の細菌群集構造 (2008)
  • Author(s): 脇谷昌俊, 松崎雅広, 高橋陽介
  • Organizer: 第65回日本植物学会中国四国支部大会
  • Place of Presentation: 広島大学
  • Year and Date: 2008-05-17
• [Presentation] 光合成細菌のDMSO呼吸系のセンサーヒスチジンキナーゼDmsSのセンシング機能のトポロジー解析 (2008)
  • Author(s): 松崎雅広, 伊藤岳, 高橋陽介
  • Organizer: 日本植物生理学会2008年度年会
  • Place of Presentation: 北海道大学
  • Year and Date: 2008-03-21
• [Presentation] 工藤栄南極すりばち池および舟底池における微生物群集とdmso呼吸細菌の解析 (2007)
  • Author(s): 脇谷昌俊, 松崎雅広, 高橋陽介, 星野保
  • Organizer: 第30回極域生物シンポジウム
  • Place of Presentation: 国立極地研究所
  • Year and Date: 2007-11-15
• [Remarks]
  • URL: http://home.hiroshima-u.ac.jp/bio/PMOLPHYS/antarc.html