PMID- 27225945 OWN - NLM STAT- MEDLINE DCOM- 20170724 LR - 20200930 IS - 1522-1490 (Electronic) IS - 0363-6119 (Linking) VI - 311 IP - 1 DP - 2016 Jul 1 TI - Gene by environmental interactions affecting oxidative phosphorylation and thermal sensitivity. PG - R157-65 LID - 10.1152/ajpregu.00008.2016 [doi] AB - The oxidative phosphorylation (OxPhos) pathway is responsible for most aerobic ATP production and is the only metabolic pathway with proteins encoded by both nuclear and mitochondrial genomes. In studies examining mitonuclear interactions among distant populations within a species or across species, the interactions between these two genomes can affect metabolism, growth, and fitness, depending on the environment. However, there is little data on whether these interactions impact natural populations within a single species. In an admixed Fundulus heteroclitus population with northern and southern mitochondrial haplotypes, there are significant differences in allele frequencies associated with mitochondrial haplotype. In this study, we investigate how mitochondrial haplotype and any associated nuclear differences affect six OxPhos parameters within a population. The data demonstrate significant OxPhos functional differences between the two mitochondrial genotypes. These differences are most apparent when individuals are acclimated to high temperatures with the southern mitochondrial genotype having a large acute response and the northern mitochondrial genotype having little, if any acute response. Furthermore, acute temperature effects and the relative contribution of Complex I and II depend on acclimation temperature: when individuals are acclimated to 12 degrees C, the relative contribution of Complex I increases with higher acute temperatures, whereas at 28 degrees C acclimation, the relative contribution of Complex I is unaffected by acute temperature change. These data demonstrate a complex gene by environmental interaction affecting the OxPhos pathway. CI - Copyright (c) 2016 the American Physiological Society. FAU - Baris, Tara Z AU - Baris TZ AD - Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Miami, Florida; FAU - Blier, Pierre U AU - Blier PU AD - Department de Biologie, Universite du Quebec a Rimouski, Rimouski, Quebec, Canada; and. FAU - Pichaud, Nicolas AU - Pichaud N AD - Department de Biologie, Universite du Quebec a Rimouski, Rimouski, Quebec, Canada; and Department of Chemistry and Biochemistry, Universite de Moncton, Moncton, New Brunswick, Canada. FAU - Crawford, Douglas L AU - Crawford DL AUID- ORCID: 0000-0002-6239-4012 AD - Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Miami, Florida; dcrawford@rsmas.miami.edu. FAU - Oleksiak, Marjorie F AU - Oleksiak MF AD - Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Miami, Florida; LA - eng PT - Journal Article DEP - 20160525 PL - United States TA - Am J Physiol Regul Integr Comp Physiol JT - American journal of physiology. Regulatory, integrative and comparative physiology JID - 100901230 RN - 9007-43-6 (Cytochromes c) RN - EC 1.3.5.1 (Electron Transport Complex II) RN - EC 7.1.1.2 (Electron Transport Complex I) SB - IM MH - Acclimatization/*genetics/physiology MH - Alleles MH - Animals MH - Body Weight MH - Cytochromes c/metabolism MH - Electron Transport Complex I/genetics/metabolism MH - Electron Transport Complex II/genetics/metabolism MH - Fundulidae/*physiology MH - Gene Frequency MH - *Gene-Environment Interaction MH - Genotype MH - Linear Models MH - Mitochondria/genetics/metabolism MH - *Oxidative Phosphorylation MH - Species Specificity MH - Temperature OTO - NOTNLM OT - Fundulus heteroclitus OT - epistasis OT - metabolism OT - mitochondria OT - thermal performance EDAT- 2016/05/27 06:00 MHDA- 2017/07/25 06:00 CRDT- 2016/05/27 06:00 PHST- 2016/01/06 00:00 [received] PHST- 2016/05/24 00:00 [accepted] PHST- 2016/05/27 06:00 [entrez] PHST- 2016/05/27 06:00 [pubmed] PHST- 2017/07/25 06:00 [medline] AID - ajpregu.00008.2016 [pii] AID - 10.1152/ajpregu.00008.2016 [doi] PST - ppublish SO - Am J Physiol Regul Integr Comp Physiol. 2016 Jul 1;311(1):R157-65. doi: 10.1152/ajpregu.00008.2016. Epub 2016 May 25.