Evolution of ion transporter Na + /K + -ATPase expression in the osmoregulatory maxillary glands of an invasive copepod.

Autor:	Popp TE; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France.; Department of Integrative Biology, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA., Hermet S; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France., Fredette-Roman J; Department of Integrative Biology, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA., McKeel E; Department of Integrative Biology, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA., Zozaya W; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France., Baumlin C; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France., Charmantier G; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France., Lee CE; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France.; Department of Integrative Biology, University of Wisconsin, 430 Lincoln Drive, Madison, WI 53706, USA., Lorin-Nebel C; MARBEC, Univ Montpellier, CNRS, IRD, Ifremer, Montpellier, France.
Jazyk:	angličtina
Zdroj:	IScience [iScience] 2024 Jun 17; Vol. 27 (7), pp. 110278. Date of Electronic Publication: 2024 Jun 17 (Print Publication: 2024).
DOI:	10.1016/j.isci.2024.110278
Abstrakt:	While many freshwater invaders originate from saline habitats, the physiological mechanisms involved are poorly understood. We investigated the evolution of ion transporter Na + /K + -ATPase (NKA) protein expression between ancestral saline and freshwater invading populations of the copepod Eurytemora carolleae (Atlantic clade of the E. affinis complex). We compared in situ NKA expression between populations under common-garden conditions at three salinities in the maxillary glands. We found the evolution of reduced NKA expression in the freshwater population under freshwater conditions and reduced plasticity (canalization) across salinities, relative to the saline population. Our results support the hypothesis that maxillary glands are involved in ion reabsorption from excretory fluids at low-salinity conditions in the saline population. However, mechanisms of freshwater adaptation, such as increased ion uptake from the environment, might reduce the need for ion reabsorption in the freshwater population. These patterns of ion transporter expression contribute insights into the evolution of ionic regulation during habitat change. Competing Interests: The authors have no competing interests. (© 2024 The Author(s).)
Databáze:	MEDLINE
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