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Review article - Peer-reviewed, 2022

Environmental paleomicrobiology: using DNA preserved in aquatic sediments to its full potential

Capo, Eric; Monchamp, Marie-Eve; Coolen, Marco J. L.; Domaizon, Isabelle; Armbrecht, Linda; Bertilsson, Stefan;

Abstract

In-depth knowledge about spatial and temporal variation in microbial diversity and function is needed for a better understanding of ecological and evolutionary responses to global change. In particular, the study of microbial ancient DNA preserved in sediment archives from lakes and oceans can help us to evaluate the responses of aquatic microbes in the past and make predictions about future biodiversity change in those ecosystems. Recent advances in molecular genetic methods applied to the analysis of historically deposited DNA in sediments have not only allowed the taxonomic identification of past aquatic microbial communities but also enabled tracing their evolution and adaptation to episodic disturbances and gradual environmental change. Nevertheless, some challenges remain for scientists to take full advantage of the rapidly developing field of paleo-genetics, including the limited ability to detect rare taxa and reconstruct complete genomes for evolutionary studies. Here, we provide a brief review of some of the recent advances in the field of environmental paleomicrobiology and discuss remaining challenges related to the application of molecular genetic methods to study microbial diversity, ecology, and evolution in sediment archives. We anticipate that, in the near future, environmental paleomicrobiology will shed new light on the processes of microbial genome evolution and microbial ecosystem responses to quaternary environmental changes at an unprecedented level of detail. This information can, for example, aid geological reconstructions of biogeochemical cycles and predict ecosystem responses to environmental perturbations, including in the context of human-induced global changes.

Published in

Environmental Microbiology

2022, volume: 24, number: 5, pages: 2201-2209
Publisher: WILEY

Authors' information

Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment
Monchamp, Marie-Eve
McGill University
Coolen, Marco J. L.
Curtin University
Domaizon, Isabelle
INRAE
Armbrecht, Linda
University of Adelaide
Armbrecht, Linda
University of Tasmania
Swedish University of Agricultural Sciences, Department of Aquatic Sciences and Assessment

Sustainable Development Goals

SDG15 Life on land
SDG14 Life below water

UKÄ Subject classification

Microbiology

Publication Identifiers

DOI: https://doi.org/10.1111/1462-2920.15913

URI (permanent link to this page)

https://res.slu.se/id/publ/115962