FN Archimer Export Format PT J TI The genome of the simultaneously hermaphroditic snail Lymnaea stagnalis reveals an evolutionary expansion of FMRFamide-like receptors BT AF Koene, Joris M. Jackson, Daniel J. Nakadera, Yumi Cerveau, Nicolas Madoui, Mohammed-Amin Noel, Benjamin Jamilloux, Véronique Poulain, Julie Labadie, Karine Silva, Corinne Da Davison, Angus Feng, Zhong-Ping Adema, Coen M. Klopp, Christophe Aury, Jean-Marc Wincker, Patrick Coutellec, Marie-Agnès AS 1:1;2:2;3:1;4:2;5:3;6:4;7:5;8:4;9:6;10:4;11:7;12:8;13:9;14:10;15:4;16:4;17:11; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;17:; C1 Amsterdam Institute for Life and Environment (A-LIFE), Vrije Universiteit, the netherlands Georg-August University of Göttingen, germany SEPIA, Institut François Jacob, Université Paris Saclay, france Génomique Métabolique, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, france PROSE, INRAE, Paris-Saclay University, france Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, france University of Nottingham, uk King's College, university of toronto, canada University of New Mexico, usa INRAE, Applied Mathematics and Informatics of Toulouse, MIAT UR875, france DECOD (Ecosystem Dynamics and Sustainability), INRAE, L’Institut Agro, france C2 UNIV VRIJE AMSTERDAM, NETHERLANDS UNIV GOTTINGEN, GERMANY UNIV PARIS SACLAY, FRANCE UNIV PARIS SACLAY, FRANCE INRAE, FRANCE UNIV PARIS SACLAYOB, FRANCE UNIV NOTTINGHAM, UK UNIV TORONTO, CANADA UNIV NEW MEXICO, USA INRAE, FRANCE INRAE, FRANCE UM DECOD IN DOAJ TC 0 UR https://archimer.ifremer.fr/doc/00879/99045/108827.pdf https://archimer.ifremer.fr/doc/00879/99045/108828.pdf LA English DT Article DE ;Molluscan genome;nuclear receptors;GPCRs;gene expansion;simultaneous hermaphroditism AB The great pond snail Lymnaea stagnalis has served as a model organism for over a century in diverse disciplines such as neurophysiology, evolution, ecotoxicology and developmental biology. To support both established uses and newly emerging research interests we have performed whole genome sequencing (~ 176 x depth), assembly and annotation of a single individual derived from an inbred line. These efforts resulted in a final assembly of 943 Mb (L50 = 257; N50 = 957,215) with a total of 22,499 predicted gene models. As a first step towards understanding the hermaphroditic reproductive biology of L. stagnalis, we identified molecular receptors, specifically nuclear receptors (including newly discovered 2xDNA binding domain-NRs), G protein-coupled receptors, and receptor tyrosine kinases, that may be involved in the cellular specification and maintenance of simultaneously active male and female reproductive systems. A phylogenetic analysis of one particular family of GPCRs (Rhodopsin neuropeptide FMRFamide-receptor-like genes) shows a remarkable expansion that coincides with the occurrence of simultaneous hermaphroditism in the Euthyneura gastropods. As some GPCRs and NRs also showed qualitative differences in expression in female (albumen gland) and male (prostate gland) organs, it is possible that separate regulation of male and female reproductive processes may in part have been enabled by an increased abundance of receptors in the transition from a separate-sexed state to a hermaphroditic condition. These findings will support efforts to pair receptors with their activating ligands, and more generally stimulate deeper insight into the mechanisms that underlie the modes of action of compounds involved in neuroendocrine regulation of reproduction, induced toxicity, and development in L. stagnalis, and molluscs in general. PY 2024 PD FEB SO Under Review at Scientific Reports PU Research Square Platform LLC DI 10.21203/rs.3.rs-3948809/v1 ID 99045 ER EF