How to thrive in unstable environments: Gene expression profile of a riparian earthworm under abiotic stress.

Autor: de Sosa I; Biodiversity, Ecology and Evolution Department, Faculty of Biology, Complutense University of Madrid, C/José Antonio Nováis 12, 28040 Madrid, Spain. Electronic address: iscarrasco@ucm.es., Verdes A; Department of Biodiversity and Evolutionary Biology, Museo Nacional de Ciencias Naturales, Consejo Superior de Investigaciones Científicas, C/Jose Gutiérrez Abascal 2, 28006 Madrid, Spain., Tilikj N; Biodiversity, Ecology and Evolution Department, Faculty of Biology, Complutense University of Madrid, C/José Antonio Nováis 12, 28040 Madrid, Spain., Marchán DF; CEFE, UMR 5175, CNRS-Univ Montpellier-Univ Paul-Valéry-EPHE-SupAgro Montpellier-INRA-IRD, Montpellier, France., Planelló R; Biology and Environmental Toxicology Group, Faculty of Science, Universidad Nacional de Educación a Distancia (UNED), Campus UNED Las Rozas, Avda. Esparta s/n, 28232, Las Rozas de Madrid, Madrid, Spain., Herrero Ó; Biology and Environmental Toxicology Group, Faculty of Science, Universidad Nacional de Educación a Distancia (UNED), Campus UNED Las Rozas, Avda. Esparta s/n, 28232, Las Rozas de Madrid, Madrid, Spain., Almodóvar A; Biodiversity, Ecology and Evolution Department, Faculty of Biology, Complutense University of Madrid, C/José Antonio Nováis 12, 28040 Madrid, Spain., Cosín DD; Biodiversity, Ecology and Evolution Department, Faculty of Biology, Complutense University of Madrid, C/José Antonio Nováis 12, 28040 Madrid, Spain., Novo M; Biodiversity, Ecology and Evolution Department, Faculty of Biology, Complutense University of Madrid, C/José Antonio Nováis 12, 28040 Madrid, Spain.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Apr 15; Vol. 817, pp. 152749. Date of Electronic Publication: 2022 Jan 03.
DOI: 10.1016/j.scitotenv.2021.152749
Abstrakt: Nowadays, extreme weather events caused by climate change are becoming more frequent. This leads to the occurrence of extreme habitats to which species must adapt. This challenge becomes crucial for species living in unstable environments, such as the riparian earthworm Eiseniella tetraedra. Its cosmopolitan distribution exposes it to various environmental changes, such as freezing in subarctic regions or droughts in Mediterranean areas. Transcriptional changes under cold and desiccation conditions could therefore shed light on the adaptive mechanisms of this species. An experiment was performed for each condition. In the cold experiment, the temperature was lowered to -14 °C ± 2 °C (compared to 8 °C for control samples), and in the desiccation treatment, humidity was lowered from 60% to 15%. Comparisons of gene expression levels between earthworms under freezing conditions and control earthworms revealed a total of 84 differentially expressed genes and comparisons between the desiccation experiment and the control yielded 163 differentially expressed genes. However, no common responses were found between the two treatments. The results suggest that E. tetraedra can acclimate to low temperatures due to the upregulation of genes involved in glucose accumulation. However, downregulation of the respiratory chain suggests that this earthworm does not tolerate freezing conditions. Under desiccation conditions, genes involved in cell protection from apoptosis and DNA repair were upregulated. In contrast, lipid metabolism was downregulated, presumably to conserve resources by reducing the rate at which they are consumed.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2021 The Author(s). Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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