Slow evolution under purifying selection in the gamete recognition protein bindin of the sea urchin Diadema
| Autor: | Kirk S. Zigler, Harilaos A. Lessios, Laura B. Geyer, Stefano Tiozzo |
|---|---|
| Přispěvatelé: | Smithsonian Tropical Research Institute, Laboratoire de Biologie du Développement de Villefranche sur mer (LBDV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Speciation lcsh:Medicine Pantropical Zoology Receptors Cell Surface Biology 010603 evolutionary biology 01 natural sciences Article Evolution Molecular 03 medical and health sciences Negative selection Phylogenetics Genus biology.animal Animals 14. Life underwater Diadema Selection Genetic lcsh:Science Sea urchin Phylogeny Multidisciplinary [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] lcsh:R biology.organism_classification Spawn (biology) 030104 developmental biology Germ Cells Sexual selection Sympatric speciation Sea Urchins Molecular evolution lcsh:Q |
| Zdroj: | Scientific Reports Scientific Reports, Nature Publishing Group, 2020, 10, pp.9834. ⟨10.1038/s41598-020-66390-2⟩ Scientific Reports, Vol 10, Iss 1, Pp 1-14 (2020) |
| ISSN: | 2045-2322 |
| Popis: | Bindin is a sperm protein that mediates attachment and membrane fusion of gametes. The mode of bindin evolution varies across sea urchin genera studied to date. In three genera it evolves under positive selection, in four under mostly purifying selection, and in one, results have been mixed. We studied bindin evolution in the pantropical sea urchin Diadema, which split from other studied genera 250 million years ago. We found that Diadema bindin is structurally similar to that of other genera, but much longer (418 amino acids). In seven species of Diadema, bindin evolves under purifying selection, more slowly than in any other sea urchin genus. Only bindin of the recently rediscovered D. clarki shows evidence of positive selection. As D. clarki is sympatric with D. setosum and D. savignyi, positive selection could arise from avoidance of maladaptive hybridization. However, D. setosum and D. savignyi overlap in the Indo-West Pacific, yet their bindins show no evidence of positive selection, possibly because the two species spawn at different times. Bindin in the East Pacific D. mexicanum, the West Atlantic D. antillarum, the East Atlantic D. africanum, and the Indo-Pacific D. paucispinum also evolves slowly under purifying selection. |
| Databáze: | OpenAIRE |
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