Studies on the marine microbial communities associated with the bloom of Chattonella anitiqua/marina

2012 Fiscal Year Final Research Report

• Project/Area Number: 22580202
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: General fisheries
• Research Institution: Nagasaki University
• Principal Investigator: WADA Minoru 長崎大学, 水産・環境科学総合研究科, 准教授 (70292860)
• Co-Investigator(Kenkyū-buntansha): SUZUKI Toshikazu 長崎大学, 大学院・水産・環境科学総合研究科, 教授 (20284713) ; UMEZAWA Yu 長崎大学, 大学院・水産・環境科学総合研究科, 准教授 (50442538) ; IWATAKI Mitsunori 山形大学, 理学部, 准教授 (50423645)
• Project Period (FY): 2010 – 2012
• Keywords: シャットネラ / 細菌群集 / 溶存有機物

Research Abstract

Single cell-level analysis of bacterioplankton in Tachibana Bay and Ariake Sea in summer 2010-2012 revealed that the bacterial cells were highly respiratory active in the upper layers with lower salinity, higher water temperature and higher concentrations of chlorophyll a and dissolved organic carbon (DOC). Furthermore, DNA finger printing and cloning of bacterial communities associated with Chattonella antiqua/marina cultures suggested that the phycosphere bacterial community was diverse and included gamma- and alpha- proteobacteria, seemingly growing on hydrophilic DOC derived from the growing algae.

Research Products

• [Journal Article] 有明海西岸域における Vibrio vulnificus の分布 (2012)
  • Author(s): 右田雄二, 山崎省吾, 高藤美和子, 中村 まき子, 吾郷昌信, 西山雅也, & 和田実
  • Journal Title: Journal of Japan Society on Water Environment Volume: 35(2) Pages: 33-9
  • DOI: DOI:10.2965/jswe.35.33
  • Peer Reviewed
• [Journal Article] Microbial community respiration and structure of dead zone sediments of Omura Bay, Japan (2012)
  • Author(s): Wada, M., Suzuki, S., Nara, T., Umezawa, Y., Shimanaga, M., Matsuoka, K., & Nakata, H.
  • Journal Title: Journal of oceanography Volume: 68(6) Pages: 857-867
  • DOI: DOI:10.1007/s10872-012-0136-6
  • Peer Reviewed
• [Journal Article] I-2. 貧酸素水塊の形 成に関わる微生物過程 (2012)
  • Author(s): 和田実
  • Journal Title: 日本水産学会誌 Volume: 78(2) Pages: 276-276
  • DOI: DOI:10.2331/suisan.78.276
• [Journal Article] Reconstruction of historical nutrient levels in Korean and Japanese coastal areas based on dinoflagellate cyst assemblages (2010)
  • Author(s): Shin, H. H., Mizushima, K., Oh, S. J., Park, J. S., Noh, I. H., Iwataki, M., Matsuoka, K. & Yoon, Y. H.
  • Journal Title: Marine pollution bulletin Volume: 60(8) Pages: 1243-1258
  • DOI: DOI:10.1016/j.marpolbul.2010.03.019
  • Peer Reviewed
• [Presentation] 大村湾の貧酸素水塊形成時期における堆積物酸素消費ポテンシャルの動態 (2013)
  • Author(s): 森郁晃、和田実、梅澤有、松岡數充、中田英昭
  • Organizer: 日本水産学会春季大会
  • Place of Presentation: 東京海洋大学
  • Year and Date: 2013-03-27
• [Presentation] Chattonella antiqua/marinaの細胞外有機物と浮遊性細菌群集構造の動態 (2013)
  • Author(s): 高野由紀子、梅澤有、松岡數充、小田達也、中村心一、吉田誠、松山幸彦、和田実
  • Organizer: 日本水産学会
  • Place of Presentation: 東京海洋大学
  • Year and Date: 2013-03-27
• [Presentation] Seasonal variation in microbial community respiration of dead zone sediments in Omura bay, Japan (2012)
  • Author(s): Mori,F.,Wada,M.,Umezawa,Y.,Matsuoka,K.and Nakata, H.
  • Organizer: International Symposium on"Biodiversity in Changing Coastal Waters of Tropical and Subtropical Asia"
  • Place of Presentation: 熊本県天草市苓北町民ホール
  • Year and Date: 2012-12-03
• [Presentation] Dynamics of respiratory-active bacterioplankton in hypoxia as revealed by flow cytometry (2011)
  • Author(s): Ohtake, Y. and Wada, M.
  • Organizer: The 8thInternational Workshop on the Oceanography and Fisheries Sciences of the East China Sea
  • Place of Presentation: 沖縄県市町村自治会館
  • Year and Date: 2011-11-25
• [Presentation] 16S-23S rDNA ITS領域の制限酵素断片長多型に基づくVibrio vulnificus臨床分離株のクラスタリング (2011)
  • Author(s): 右田雄二、山崎省吾、石原雅行、北川由美香、平木希、吾郷昌信、西山雅也、和田実
  • Organizer: 日本微生物生態学会
  • Place of Presentation: 京都大学
  • Year and Date: 2011-10-08
• [Presentation] Impacts of extra-cellular organic matter derived from red tide forming algae(Chattonella marina and C. antiqua) on bacterial population (2010)
  • Author(s): Takano,Y.,Umezawa,Y.,Wada, M.
  • Organizer: 日本微生物生態学会
  • Place of Presentation: 筑波大学
  • Year and Date: 2010-11-25
• [Presentation] Taxonomy of the armored dinoflagellate genus Heterocapsa based on body scale ultrastructure,Horiba International Conference "New Direction of Ocean Research in the Western Pacific" -Past (2010)
  • Author(s): Iwataki, M.and Fukuyo, Y
  • Organizer: Present and Future of UNESCO/IOC/WESTPAC Activity for 50 years and the JSPS Project "Coastal Marine Science"
  • Place of Presentation: 東京大学大気海洋研究所
  • Year and Date: 2010-10-26
• [Remarks]
  • URL: http://research.jimu.nagasaki-u.ac.jp/IST