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How does scaly-foot gastropod form iron sulfide layer on its scale?

Research Project

Project/Area Number 16H07490
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Crystal engineering
Research InstitutionJapan Agency for Marine-Earth Science and Technology

Principal Investigator

OKADA Satoshi  国立研究開発法人海洋研究開発機構, 海洋生命理工学研究開発センター, 研究員 (90780916)

Project Period (FY) 2016-08-26 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsスケーリーフット / バイオミネラリゼーション / 電子顕微鏡 / ナノ化学 / 結晶成長 / 熱水噴出孔 / ナノ材料 / バイオミメティクス
Outline of Final Research Achievements

Scaly-foot gastropod, Chrysomallon squamiferum, is a deep-sea snail living on hydrothermal vent that possesses scales with iron sulfide nanoparticles. The appearance of iron sulfide nanoparticles depends on the composition of hydrothermal fluids, namely “black scaly-foot” with iron sulfide nanoparticles, and “white scaly-foot” without iron sulfide. The mechanism of biomineralization remained as a question and was explored based on electron microscopic observation of cross section of scale and shell. In addition, the white scaly-foot sample left on the habitat of black scaly-foot was also investigated. It was revealed that the iron sulfide nanoparticle was synthesized biologically within the scale, not by adsorption of hydrothermally synthesized nanoparticles nor by adsorbed bacteria.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • Research Products

    (1 results)

All 2017

All Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Formation of Monodisperse Nanoemulsions Inspired by Deep-Sea Environment2017

    • Author(s)
      Satoshi Okada
    • Organizer
      Gordon Research Conference, Self-Assembly & Supramolecular Chemistry Equilibrated and Non-Equilibrated Systems for Anomalous Structures and Properties
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2016-09-02   Modified: 2019-03-29  

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