Publicación: How to thrive in unstable environments: Gene expression profile of a riparian earthworm under abiotic stress
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2022
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info:eu-repo/semantics/openAccess
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Resumen
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.
Descripción
The registered version of this article, first published in “Science of The Total Environment, 2022", is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.scitotenv.2021.152749
La versión registrada de este artículo, publicado por primera vez en “Science of The Total Environment, 2022", está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.scitotenv.2021.152749
Categorías UNESCO
Palabras clave
climate change, cold, desiccation, eiseniella tetraedra, transcriptomics
Citación
Irene de Sosa, Aída Verdes, Natasha Tilikj, Daniel F. Marchán, Rosario Planelló, Óscar Herrero, Ana Almodóvar, Darío Díaz Cosín, Marta Novo, How to thrive in unstable environments: Gene expression profile of a riparian earthworm under abiotic stress, Science of The Total Environment, Volume 817, 2022, 152749, ISSN 0048-9697, https://doi.org/10.1016/j.scitotenv.2021.152749
Centro
Facultades y escuelas::Facultad de Ciencias
Departamento
Física Matemática y de Fluídos