1. Sex chromosome and sex locus characterization in the goldfish, Carassius auratus
- Author
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Hugues Parrinello, Amaury Herpin, Margot Zahm, Romain Feron, Manfred Schartl, Ming Wen, Shawn M. Burgess, Elodie Jouanno, Qiaowei Pan, Yann Guiguen, Laurent Journot, Christophe Klopp, Justine Guguin, Cédric Cabau, John H. Postlethwait, Yoshihiro Omori, Laboratoire de Physiologie et Génomique des Poissons (LPGP), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Recherche Agronomique (INRA), Hunan Normal University, University of Lausanne (UNIL), Swiss Institute of Bioinformatics [Lausanne] (SIB), Université de Lausanne (UNIL), Department of Ecology and Evolution, Unité de Mathématiques et Informatique Appliquées de Toulouse (MIAT INRA), Institut National de la Recherche Agronomique (INRA), Génétique Physiologie et Systèmes d'Elevage (GenPhySE ), École nationale supérieure agronomique de Toulouse [ENSAT]-Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Institut de Génomique Fonctionnelle - Montpellier GenomiX (IGF MGX), Institut de Génomique Fonctionnelle (IGF), Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), National Human Genome Research Institute (NHGRI), Nagahama Institute of Bio-Science and Technology, Osaka University, Institute of Neuroscience, University of Oregon [Eugene], University of Würzburg, Texas State University, This project was supported by funds from the 'Agence Nationale de la Recherche' and the 'Deutsche Forschungsgemeinschaft' (ANR/DFG, PhyloSex project, 2014-2016) to MS and YG. Montpellier Genomics (MGX) facility was supported by France Génomique National infrastructure, funded as part of 'Investissement d’avenir' program managed by Agence Nationale pour la Recherche (contract ANR-10-INBS-09). This work was also supported by Grant-in-Aid for Scientific Research (19K22426) to YO, and grants R01OD011116 and 5R01GM085318 from the USA National Institutes of Health to JHP, ANR-13-ISV7-0005,PhyloSex,Evolution des déterminants majeurs du sexe chez les poissons.(2013), ANR-10-INBS-0009,France-Génomique,Organisation et montée en puissance d'une Infrastructure Nationale de Génomique(2010), ProdInra, Migration, Blanc – Accords bilatéraux 2013 - Evolution des déterminants majeurs du sexe chez les poissons. - - PhyloSex2013 - ANR-13-ISV7-0005 - Blanc – Accords bilatéraux 2013 - VALID, Organisation et montée en puissance d'une Infrastructure Nationale de Génomique - - France-Génomique2010 - ANR-10-INBS-0009 - INBS - VALID, Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Hunan Normal University (HNU), Université de Lausanne = University of Lausanne (UNIL), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire de Toulouse (ENVT), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-École nationale supérieure agronomique de Toulouse [ENSAT], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-BioCampus (BCM), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
0106 biological sciences ,male genome assembly ,[SDV]Life Sciences [q-bio] ,marqueur génétique ,sex determination ,Locus (genetics) ,[MATH] Mathematics [math] ,[SDV.GEN] Life Sciences [q-bio]/Genetics ,[SDV.GEN.GA] Life Sciences [q-bio]/Genetics/Animal genetics ,[INFO] Computer Science [cs] ,Biology ,Y chromosome ,010603 evolutionary biology ,01 natural sciences ,Genome ,reproduction ,03 medical and health sciences ,poisson ,cyprinidae ,température ,Sex-determination system ,chromosome sexuel ,[INFO]Computer Science [cs] ,14. Life underwater ,goldfish ,[MATH]Mathematics [math] ,Gene ,poolseq ,030304 developmental biology ,Genetics ,0303 health sciences ,[SDV.GEN]Life Sciences [q-bio]/Genetics ,détermination du sexe ,génome ,carassius auratus ,RADseq ,Sex reversal ,[SDV] Life Sciences [q-bio] ,poisson rouge ,[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics ,espèce modèle ,aquaculture ,Genetic marker ,facteur externe ,sex markers ,Heterogametic sex - Abstract
BackgroundGoldfish is an important model for various areas of research, including neural development and behavior and a species of significant importance in aquaculture, especially as an ornamental species. It has a male heterogametic (XX/XY) sex determination system that relies on both genetic and environmental factors, with high temperatures being able to produce female-to-male sex reversal. Little, however, is currently known on the molecular basis of genetic sex determination in this important cyprinid model. We used sequencing approaches to better characterize sex determination and sex-chromosomes in goldfish.ResultsOur results confirmed that sex determination in goldfish is a mix of environmental and genetic factors and that its sex determination system is male heterogametic (XX/XY). Using reduced representation (RAD-seq) and whole genome (pool-seq) approaches, we characterized sex-linked polymorphisms and developed male specific genetic markers. These male specific markers were used to distinguish sex-reversed XX neomales from XY males and to demonstrate that XX female-to-male sex reversal could even occur at a relatively low rearing temperature (18°C), for which sex reversal has been previously shown to be close to zero. We also characterized a relatively large non-recombining region (∼11.7 Mb) on goldfish linkage group 22 (LG22) that contained a high-density of male-biased genetic polymorphisms. This large LG22 region harbors 373 genes, including a single candidate as a potential master sex gene, i.e., the anti-Mullerian hormone gene (amh). However, no sex-linked polymorphisms were detected in the goldfish amh gene or its 5 kb proximal promoter sequence.ConclusionsThese results show that goldfish have a relatively large sex locus on LG22, which is likely the goldfish Y chromosome. The presence of a few XX males even at low temperature also suggests that other environmental factors in addition to temperature could trigger female-to-male sex reversal. Finally, we also developed sex-linked genetic markers in goldfish, which will be important for future research on sex determination and aquaculture applications in this species.
- Published
- 2019
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