FN Archimer Export Format PT J TI Environmentally Driven Color Variation in the Pearl Oyster Pinctada margaritifera var. cumingii (Linnaeus, 1758) Is Associated With Differential Methylation of CpGs in Pigment- and Biomineralization-Related Genes BT AF Stenger, Pierre-Louis Ky, Chin-Long Reisser, Celine Cosseau, Céline Grunau, Christoph MEGE, Mickael Planes, Serge Vidal-Dupiol, Jeremie AS 1:1,2;2:1,2;3:1,3;4:4;5:4;6:1,5;7:6;8:2; FF 1:PDG-RBE-RMPF;2:PDG-RBE-IHPE;3:PDG-RBE-MARBEC;4:;5:;6:PDG-RBE-SGMM-LGPMM;7:;8:PDG-RBE-IHPE; C1 IFREMER, UMR 241 Écosystèmes Insulaires Océaniens, Labex Corail, Centre du Pacifique, Tahiti, French Polynesia IHPE, Université de Montpellier, CNRS, IFREMER, Université de Perpignan Via Domitia, Montpellier, France MARBEC, Université de Montpellier, CNRS, IFREMER, IRD, Montpellier, France IHPE, Université de Montpellier, CNRS, IFREMER, Université de Perpignan Via Domitia, Perpignan, France IFREMER, PDG-RBE-SGMM-LGPMM, La Tremblade, France EPHE-UPVD-CNRS, USR 3278 CRIOBE, Labex Corail, PSL Research University, Université de Perpignan, Perpignan, France C2 IFREMER, FRANCE IFREMER, FRANCE IFREMER, FRANCE UNIV MONTPELLIER, FRANCE IFREMER, FRANCE UNIV PERPIGNAN, FRANCE SI TAHITI MONTPELLIER LA TREMBLADE SE PDG-RBE-RMPF PDG-RBE-IHPE PDG-RBE-MARBEC PDG-RBE-SGMM-LGPMM UM MARBEC IHPE EIO IN WOS Ifremer UPR WOS Ifremer UMR WOS Cotutelle UMR DOAJ copubli-france copubli-univ-france IF 4.772 TC 5 UR https://archimer.ifremer.fr/doc/00685/79667/82436.pdf https://archimer.ifremer.fr/doc/00685/79667/82437.xlsx https://archimer.ifremer.fr/doc/00685/79667/82438.xlsx https://archimer.ifremer.fr/doc/00685/79667/82439.xlsx https://archimer.ifremer.fr/doc/00685/79667/82440.pptx https://archimer.ifremer.fr/doc/00685/79667/82441.zip LA English DT Article DE ;pearl oyster;environmental pressure;depth;color change;pigmentation;DNA methylation;methylome characterization AB Today, it is common knowledge that environmental factors can change the color of many animals. Studies have shown that the molecular mechanisms underlying such modifications could involve epigenetic factors. Since 2013, the pearl oyster Pinctada margaritifera var. cumingii has become a biological model for questions on color expression and variation in Mollusca. A previous study reported color plasticity in response to water depth variation, specifically a general darkening of the nacre color at greater depth. However, the molecular mechanisms behind this plasticity are still unknown. In this paper, we investigate the possible implication of epigenetic factors controlling shell color variation through a depth variation experiment associated with a DNA methylation study performed at the whole genome level with a constant genetic background. Our results revealed six genes presenting differentially methylated CpGs in response to the environmental change, among which four are linked to pigmentation processes or regulations (GART, ABCC1, MAPKAP1, and GRL101), especially those leading to darker phenotypes. Interestingly, the genes perlucin and MGAT1, both involved in the biomineralization process (deposition of aragonite and calcite crystals), also showed differential methylation, suggesting that a possible difference in the physical/spatial organization of the crystals could cause darkening (iridescence or transparency modification of the biomineral). These findings are of great interest for the pearl production industry, since wholly black pearls and their opposite, the palest pearls, command a higher value on several markets. They also open the route of epigenetic improvement as a new means for pearl production improvement. PY 2021 PD MAR SO Frontiers In Genetics SN 1664-8021 PU Frontiers Media SA VL 12 UT 000635978000001 DI 10.3389/fgene.2021.630290 ID 79667 ER EF