絶滅の危機に瀕している微生物の目録を作成(Scientists compile an inventory of endangered microorganisms)

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2022-06-09 スイス連邦工科大学ローザンヌ校(EPFL)

寒冷圏の生態系は、地球上で最も古いものの一つです。EPFLの科学者たちは、そこに生息する微生物が独自の遺伝的特徴を持つことを発見しました。彼らは、これらの生態系に生息する微生物のインベントリーを作成し、その情報をデータベース化しました。

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雪氷圏生態系の微生物叢 The microbiome of cryospheric ecosystems

Massimo Bourquin,Susheel Bhanu Busi,Stilianos Fodelianakis,Hannes Peter,Alex Washburne,Tyler J. Kohler,Leïla Ezzat,Grégoire Michoud,Paul Wilmes & Tom J. Battin
Nature Communications  Published:02 June 2022
DOI:https://doi.org/10.1038/s41467-022-30816-4

Abstract

The melting of the cryosphere is among the most conspicuous consequences of climate change, with impacts on microbial life and related biogeochemistry. However, we are missing a systematic understanding of microbiome structure and function across cryospheric ecosystems. Here, we present a global inventory of the microbiome from snow, ice, permafrost soils, and both coastal and freshwater ecosystems under glacier influence. Combining phylogenetic and taxonomic approaches, we find that these cryospheric ecosystems, despite their particularities, share a microbiome with representatives across the bacterial tree of life and apparent signatures of early and constrained radiation. In addition, we use metagenomic analyses to define the genetic repertoire of cryospheric bacteria. Our work provides a reference resource for future studies on climate change microbiology.

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