Molecular responses of a key Antarctic species to sedimentation due to rapid climate change.

Autor: Ruiz MB; Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Córdoba, Argentina; Universidad Nacional de Córdoba, Facultad de Ciencias Exactas Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Ecología Marina, Córdoba, Argentina. Electronic address: micaruiz90@gmail.com., Servetto N; Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Córdoba, Argentina; Universidad Nacional de Córdoba, Facultad de Ciencias Exactas Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Ecología Marina, Córdoba, Argentina. Electronic address: biol.nataliaservetto@gmail.com., Alurralde G; Department of Environmental Science, Stockholm University, Stockholm, Sweden. Electronic address: mitocondriarevelde@gmail.com., Abele D; Alfred Wegener Institute Helmholtz-Zentrum für Polar- und Meeresforschung, Section Functional Ecology, Evolutionary Macroecology, Bremerhaven, Germany., Harms L; Alfred Wegener Institute Helmholtz-Zentrum für Polar- und Meeresforschung, Computing and data center, Data Science Support, Bremerhaven, Germany. Electronic address: Lars.Harms@awi.de., Sahade R; Instituto de Diversidad y Ecología Animal (IDEA) CONICET, Córdoba, Argentina; Universidad Nacional de Córdoba, Facultad de Ciencias Exactas Físicas y Naturales, Departamento de Diversidad Biológica y Ecología, Ecología Marina, Córdoba, Argentina. Electronic address: rsahade@unc.edu.ar., Held C; Alfred Wegener Institute Helmholtz-Zentrum für Polar- und Meeresforschung, Section Functional Ecology, Evolutionary Macroecology, Bremerhaven, Germany. Electronic address: Christoph.Held@awi.de.
Jazyk: angličtina
Zdroj: Marine environmental research [Mar Environ Res] 2022 Sep; Vol. 180, pp. 105720. Date of Electronic Publication: 2022 Aug 10.
DOI: 10.1016/j.marenvres.2022.105720
Abstrakt: Rapid regional warming causing glacial retreat and melting of ice caps in Antarctica leads benthic filter-feeders to be exposed to periods of food shortage and high respiratory impairment as a consequence of seasonal sediment discharge in the West Antarctic Peninsula coastal areas. The molecular physiological response and its fine-tuning allow species to survive acute environmental stress and are thus a prerequisite to longer-term adaptation to changing environments. Under experimental conditions, we analyzed here the metabolic response to changes in suspended sediment concentrations, through transcriptome sequencing and enzymatic measurements in a highly abundant Antarctic ascidian. We found that the mechanisms underlying short-term response to sedimentation in Cnemidocarpa verrucosa sp. A involved apoptosis, immune defense, and general metabolic depression. These mechanisms may be understood as an adaptive protection against sedimentation caused by glacial retreat. This process can strongly contribute to the structuring of future benthic filter-feeder communities in the face of climate change.
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 © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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