• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2022 Fiscal Year Final Research Report

Comparative metagenomics reveals the diversity of glacier Cyanobacteria

Research Project

  • PDF
Project/Area Number 19K23766
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0703:Biology at organismal to population levels and anthropology, and related fields
Research InstitutionNational Institute of Genetics

Principal Investigator

Murakami Takumi  国立遺伝学研究所, 情報研究系, 特任研究員 (00806432)

Project Period (FY) 2019-08-30 – 2023-03-31
Keywords氷河生態系 / メタゲノム / クリオコナイト / シアノバクテリア / 脱窒
Outline of Final Research Achievements

In glacier environments, cryoconite granules, which are aggregates of microbes and minerals, play fundamental roles in glacier ecosystems. In this study, we collected cryoconite samples around the world and conducted comparative metagenomics analyses to investigate the taxonomic and ecological diversities of cryoconite bacterial communities on a global scale. Our study revealed that compositions of bacterial taxa and functional genes of cryoconite bacterial consortia were distinctive among glaciers in different geographical areas, especially between Polar glaciers and Asian high mountain glaciers. These results highlight that microbial ecosystems on glacier vary across the different geographical areas, and imply that assembly of bacterial communities on glaciers were influenced by local glacier environments.

Free Research Field

環境微生物学

Academic Significance and Societal Importance of the Research Achievements

氷河微生物の活動は流域の物質循環や氷河融解にも深く関与しているため、それら氷河微生物の総体である氷河生態系の構造を詳細に理解することは生物学・地球科学的に重要な課題である。本研究によって、様々な代謝能を有した多様な細菌種が世界各地の氷河に分布しており、地域ごとに特色を持った氷河生態系が構築されているということが初めて具体的に示された。これらの成果は、環境と氷河微生物群集の動態を紐づける重要な知見であり、「気候変動によって氷河生態系が今後どう変容し、物質循環や生物多様性がどのような影響を受けるのか」という問いをより詳細に解明していくことに大きく貢献する。

URL: 

Published: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi