Metallomics on each organ of coral from seawater and their environmental response

2015 Fiscal Year Final Research Report

• Project/Area Number: 25340013
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Azabu University
• Principal Investigator: Itoh Akihide 麻布大学, その他部局等, 教授 (60273265)
• Co-Investigator(Kenkyū-buntansha): ZHU Yanbei 独立行政法人産業技術総合研究所, 標準計測部門, 研究員 (90422790)
• Co-Investigator(Renkei-kenkyūsha): Nakano Yoshikatsu 琉球大学, 熱帯生物圏研究センター, 技術職員 (40457669)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: サンゴ / 褐虫藻 / 骨格 / 海水 / メタロミクス / 微量金属 / ICP-MS / 濃縮安定同位体

Outline of Final Research Achievements

In the present study, the concentrations of trace elements in each organ in reef-building coral were multielemently measured by inductively coupled plasma mass spectrometry (ICP-MS). As a result, it was elucidated that the concentrations of Fe, Zn, and Cd in the symbiotic zooxanthellae were remarkably over 100000-fold larger than those in seawater. Furthermore, the breeding experiment using seawater tanks, in which enriched stable isotopes were added, were carried out to investigate the intake processes of trace elements from seawater to each organ in the coral. As the results, it was suggested that Zn and Fe were intaken in zooxanthellae from seawater after 24-48 hours and provided into soft tissues, and Zn and Pb were stored in skeleton via soft tissues.

Free Research Field

環境分析化学