Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/49739
Title: Rock Traits Drive Complex Microbial Communities at the Edge of Life
Authors: Coleine, Claudia
Delgado-Baquerizo, Manuel
Zerboni, Andrea
Turchetti, Benedetta
Buzzini, Pietro
Franceschi, Pietro
Selbmann, Laura 
Journal: ASTROBIOLOGY 
Issue Date: 2023
Abstract: 
Antarctic deserts are among the driest and coldest ecosystems of the planet; there, some microbes survive under these extreme conditions inside porous rocks, forming the so-called endolithic communities. Yet the contribution of distinct rock traits to support complex microbial assemblies remains poorly determined. Here, we combined an extensive Antarctic rock survey with rock microbiome sequencing and ecological networks and found that contrasting combinations of microclimatic and rock traits such as thermal inertia, porosity, iron concentration, and quartz cement can help explain the multiple complex microbial assemblies found in Antarctic rocks. Our work highlights the pivotal role of rocky substrate heterogeneity in sustaining contrasting groups of microorganisms, which is essential to understand life at the edge on Earth and for the search for life on other rocky planets such as Mars.
URI: http://hdl.handle.net/2067/49739
ISSN: 1557-8070
DOI: 10.1089/ast.2022.0062
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
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