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Effects of mitonuclear combination and thermal acclimation on the energetic phenotype
Author(s) -
Chapdelaine Vincent,
Bettinazzi Stefano,
Breton Sophie,
Angers Bernard
Publication year - 2020
Publication title -
journal of experimental zoology part a: ecological and integrative physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.834
H-Index - 11
eISSN - 2471-5646
pISSN - 2471-5638
DOI - 10.1002/jez.2355
Subject(s) - nuclear gene , biology , mitochondrion , cytochrome c oxidase , genome , gene , oxidative phosphorylation , genetics , population , adenosine triphosphate , mitochondrial dna , microbiology and biotechnology , biochemistry , demography , sociology
Activity of the oxidative phosphorylation complexes rely on intimately associated subunits encoded by the mitochondrial and nuclear genomes. Given the key role of this system in adenosine triphosphate production, genes from both genomes must coevolve. A combination of northern redbelly dace ( Chrosomus eos ) or finescale dace ( C. neogaeus ) mitochondrial genome with a C. eos nuclear genome allows for a close examination of a naturally occurring disruption of mitonuclear coevolution. We, therefore, investigated the combined effect of mitonuclear genotypes, acclimation, and temperature on the activity of enzymes linked with the energy metabolism in a sympatric population of wild type and cybrid. As expected, the activity of the nuclear‐encoded citrate synthase was only influenced by temperature while the cytochrome c oxidase (composed of nuclear and mitochondrial subunits from wild type and cybrid individuals) responded differently to temperature. This study provides clear evidence of the extent by which mitonuclear coadaptation could influence aerobic metabolism.