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Guerra VI, Haynes G, Byrne M, Hart MW. Selection on genes associated with the evolution of divergent life histories: Gamete recognition or something else? Evol Dev 2021; 23:423-438. [PMID: 34549504 DOI: 10.1111/ede.12392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 04/17/2021] [Accepted: 06/02/2021] [Indexed: 12/13/2022]
Abstract
Gamete compatibility, and fertilization success, is mediated by gamete-recognition genes (GRGs) that are expected to show genetic evidence of a response to sexual selection associated with mating system traits. Changes in the strength of sexual selection can arise from the resolution of sperm competition among males, sexual conflicts of interest between males and females, or other mechanisms of sexual selection. To assess these expectations, we compared patterns of episodic diversifying selection among genes expressed in the gonads of Cryptasterina pentagona and C. hystera, which recently speciated and have evolved different mating systems (gonochoric or hermaphroditic), modes of fertilization (outcrossing or selfing), and dispersal (planktonic larvae or internal brooding). Cryptasterina spp. inhabit the upper intertidal of the coast of Queensland and coral islands of the Great Barrier Reef. We found some evidence for positive selection on a GRG in the outcrossing C. pentagona, and we found evidence of loss of gene function in a GRG of the self-fertilizing C. hystera. The modification or loss of gene functionality may be evidence of relaxed selection on some aspects of gamete interaction in C. hystera. In addition to these genes involved in gamete interactions, we also found genes under selection linked to abiotic stress, chromosomal regulation, polyspermy, and egg-laying. We interpret those results as possible evidence that Cryptasterina spp. with different mating systems may have been adapting in divergent ways to oxidative stress or other factors associated with reproduction in the physiologically challenging environment of the high intertidal. RESEARCH HIGHLIGHTS: Recent speciation between two sea stars was unlikely the result of selection on gamete-recognition genes annotated in this study. Instead, our results point to selection on genes linked to the intertidal environment and reproduction.
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Affiliation(s)
- Vanessa I Guerra
- Department of Biological Sciences and Crawford Laboratory of Evolutionary Studies, Simon Fraser University, Burnaby, British Columbia, Canada.,Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, USA
| | - Gwilym Haynes
- Department of Biological Sciences and Crawford Laboratory of Evolutionary Studies, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Maria Byrne
- School of Biological Sciences, University of Sydney, Sydney, New South Wales, Australia
| | - Michael W Hart
- Department of Biological Sciences and Crawford Laboratory of Evolutionary Studies, Simon Fraser University, Burnaby, British Columbia, Canada
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Han Y, Shi W, Tang Y, Zhao X, Du X, Sun S, Zhou W, Liu G. Ocean acidification increases polyspermy of a broadcast spawning bivalve species by hampering membrane depolarization and cortical granule exocytosis. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 231:105740. [PMID: 33440272 DOI: 10.1016/j.aquatox.2020.105740] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/27/2020] [Accepted: 12/29/2020] [Indexed: 06/12/2023]
Abstract
Ensuring that oocytes are fertilized by a single sperm during broadcast spawning is crucial for the fertilization success of many marine invertebrates. Although the adverse impacts of ocean acidification (OA) on various marine species have been revealed in recent years, its impact on polyspermy and the underlying mechanisms involved remain largely unknown. Therefore, in the present study, the effect of OA on polyspermy risk was assessed in a broadcast spawning bivalve, Tegillarca granosa. In addition, the impacts of OA on the two polyspermy blocking processes, the fast block (membrane depolarization) and the permanent block (cortical reaction), were investigated. The results show that the exposure of oocytes to two future OA scenarios (pH 7.8 and pH 7.4) leads to significant increases in polyspermy risk, about 1.70 and 2.38 times higher than the control, respectively. The maximum change in the membrane potential during oocyte membrane depolarization markedly decreased to 15.79 % (pH 7.8) and 34.06 % (pH 7.4) of the control value. Moreover, the duration of oocyte membrane depolarization was significantly reduced to approximately 63.38 % (pH 7.8) and 21.91 % (pH 7.4) of the control. In addition, cortical granule exocytosis, as well as microfilament migration, were significantly arrested by OA treatment. Exposure to future OA scenarios also led to significant reductions in the ATP and Ca2+ content of the oocytes, which may explain the hampered polyspermy blocking. Overall, the present study suggests that OA may significantly increase polyspermy risk in T. granosa by inhibiting membrane depolarization and arresting cortical granule exocytosis.
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Affiliation(s)
- Yu Han
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Yu Tang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Xinguo Zhao
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China; Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, PR China
| | - Xueying Du
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Shuge Sun
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Weishang Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, PR China.
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Torrezan-Nitao E, Figueiredo RCBQ, Marques-Santos LF. Mitochondrial permeability transition pore in sea urchin female gametes. Mech Dev 2018; 154:208-218. [DOI: 10.1016/j.mod.2018.07.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 07/21/2018] [Accepted: 07/24/2018] [Indexed: 12/20/2022]
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Tosti E, Ménézo Y. Gamete activation: basic knowledge and clinical applications. Hum Reprod Update 2016; 22:420-39. [PMID: 27278231 PMCID: PMC4917743 DOI: 10.1093/humupd/dmw014] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 04/01/2016] [Indexed: 01/07/2023] Open
Abstract
Background The first clues to the process of gamete activation date back to nearly 60 years ago. The mutual activation of gametes is a crucial event during fertilization. In the testis and ovaries, spermatozoa and oocytes are in a state of meiotic and metabolic quiescence and require reciprocal signals in order to undergo functional changes that lead to competence for fertilization. First, the oocyte activates sperm by triggering motility, chemoattraction, binding and the acrosome reaction, culminating with the fusion of the two plasma membranes. At the end of this cascade of events, collectively known as sperm capacitation, sperm-induced oocyte activation occurs, generating electrical, morphological and metabolic modifications in the oocyte. Objective and rationale The aim of this review is to provide the current state of knowledge regarding the entire process of gamete activation in selected specific animal models that have contributed to our understanding of fertilization in mammals, including humans. Here we describe in detail the reciprocal induction of the two activation processes, the molecules involved and the mechanisms of cell interaction and signal transduction that ultimately result in successful embryo development and creation of a new individual. Search methods We carried out a literature survey with no restrictions on publication date (from the early 1950s to March 2016) using PubMed/Medline, Google Scholar and Web of Knowledge by utilizing common keywords applied in the field of fertilization and embryo development. We also screened the complete list of references published in the most recent research articles and relevant reviews published in English (both animal and human studies) on the topics investigated. Outcomes Literature on the principal animal models demonstrates that gamete activation is a pre-requisite for successful fertilization, and is a process common to all species studied to date. We provide a detailed description of the dramatic changes in gamete morphology and behavior, the regulatory molecules triggering gamete activation and the intracellular ions and second messengers involved in active metabolic pathways in different species. Recent scientific advances suggest that artificial gamete activation may represent a novel technique to improve human IVF outcomes, but this approach requires caution. Wider implications Although controversial, manipulation of gamete activation represents a promising tool for ameliorating the fertilization rate in assisted reproductive technologies. A better knowledge of mechanisms that transform the quiescent oocyte into a pluripotent cell may also provide new insights for the clinical use of stem cells.
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Affiliation(s)
- Elisabetta Tosti
- Stazione Zoologica Anton Dohrn, Villa Comunale, Naples 80121, Italy
| | - Yves Ménézo
- London Fertility Associates, 104 Harley Street, London WIG7JD, UK
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Guo H, Garcia-Vedrenne AE, Isserlin R, Lugowski A, Morada A, Sun A, Miao Y, Kuzmanov U, Wan C, Ma H, Foltz K, Emili A. Phosphoproteomic network analysis in the sea urchin Strongylocentrotus purpuratus
reveals new candidates in egg activation. Proteomics 2015; 15:4080-95. [DOI: 10.1002/pmic.201500159] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/16/2015] [Accepted: 07/23/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Hongbo Guo
- Donnelly Centre for Cellular and Biomolecular Research; University of Toronto; Toronto ON Canada
| | | | - Ruth Isserlin
- Donnelly Centre for Cellular and Biomolecular Research; University of Toronto; Toronto ON Canada
| | - Andrew Lugowski
- Donnelly Centre for Cellular and Biomolecular Research; University of Toronto; Toronto ON Canada
| | - Anthony Morada
- Department of Molecular, Cellular and Developmental Biology, and Marine Science Institute; Santa Barbara CA USA
| | - Alex Sun
- Department of Molecular, Cellular and Developmental Biology, and Marine Science Institute; Santa Barbara CA USA
| | - Yishen Miao
- Department of Molecular, Cellular and Developmental Biology, and Marine Science Institute; Santa Barbara CA USA
| | - Uros Kuzmanov
- Donnelly Centre for Cellular and Biomolecular Research; University of Toronto; Toronto ON Canada
| | - Cuihong Wan
- Donnelly Centre for Cellular and Biomolecular Research; University of Toronto; Toronto ON Canada
| | - Hongyue Ma
- Collaborative Innovation Center of Chinese Medicinal Resources Industrialization; College of Pharmacy; Nanjing University of Chinese Medicine; Nanjing P. R. China
| | - Kathy Foltz
- Department of Molecular, Cellular and Developmental Biology, and Marine Science Institute; Santa Barbara CA USA
| | - Andrew Emili
- Donnelly Centre for Cellular and Biomolecular Research; University of Toronto; Toronto ON Canada
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Shu L, Suter MJF, Räsänen K. Evolution of egg coats: linking molecular biology and ecology. Mol Ecol 2015; 24:4052-73. [DOI: 10.1111/mec.13283] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 06/12/2015] [Accepted: 06/17/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Longfei Shu
- Department of Aquatic Ecology; Swiss Federal Institute of Aquatic Science and Technology; Eawag; 8600 Duebendorf Switzerland
- Institute of Integrative Biology; ETH Zurich; 8092 Zurich Switzerland
| | - Marc J.-F. Suter
- Department of Environmental Toxicology; Swiss Federal Institute of Aquatic Science and Technology; Eawag; 8600 Duebendorf Switzerland
- Department of Environmental Systems Science; Swiss Federal Institute of Technology; ETH Zurich; 8092 Zurich Switzerland
| | - Katja Räsänen
- Department of Aquatic Ecology; Swiss Federal Institute of Aquatic Science and Technology; Eawag; 8600 Duebendorf Switzerland
- Institute of Integrative Biology; ETH Zurich; 8092 Zurich Switzerland
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Ramos I, Reich A, Wessel GM. Two-pore channels function in calcium regulation in sea star oocytes and embryos. Development 2014; 141:4598-609. [PMID: 25377554 DOI: 10.1242/dev.113563] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Egg activation at fertilization is an excellent process for studying calcium regulation. Nicotinic acid adenine dinucleotide-phosphate (NAADP), a potent calcium messenger, is able to trigger calcium release, likely through two-pore channels (TPCs). Concomitantly, a family of ectocellular enzymes, the ADP-ribosyl cyclases (ARCs), has emerged as being able to change their enzymatic mode from one of nucleotide cyclization in formation of cADPR to a base-exchange reaction in the generation of NAADP. Using sea star oocytes we gain insights into the functions of endogenously expressed TPCs and ARCs in the context of the global calcium signals at fertilization. Three TPCs and one ARC were found in the sea star (Patiria miniata) that were localized in the cortex of the oocytes and eggs. PmTPCs were localized in specialized secretory organelles called cortical granules, and PmARCs accumulated in a different, unknown, set of vesicles, closely apposed to the cortical granules in the egg cortex. Using morpholino knockdown of PmTPCs and PmARC in the oocytes, we found that both calcium regulators are essential for early embryo development, and that knockdown of PmTPCs leads to aberrant construction of the fertilization envelope at fertilization and changes in cortical granule pH. The calcium signals at fertilization are not significantly altered when individual PmTPCs are silenced, but the timing and shape of the cortical flash and calcium wave are slightly changed when the expression of all three PmTPCs is perturbed concomitantly, suggesting a cooperative activity among TPC isoforms in eliciting calcium signals that may influence localized physiological activities.
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Affiliation(s)
- Isabela Ramos
- Department of Molecular Biology, Cellular Biology, and Biochemistry, Brown University, Providence, RI 02912, USA Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ 21941, Brazil
| | - Adrian Reich
- Department of Molecular Biology, Cellular Biology, and Biochemistry, Brown University, Providence, RI 02912, USA
| | - Gary M Wessel
- Department of Molecular Biology, Cellular Biology, and Biochemistry, Brown University, Providence, RI 02912, USA
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Oulhen N, Xu D, Wessel GM. Conservation of sequence and function in fertilization of the cortical granule serine protease in echinoderms. Biochem Biophys Res Commun 2014; 450:1135-41. [PMID: 24878526 DOI: 10.1016/j.bbrc.2014.05.098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 05/21/2014] [Indexed: 11/17/2022]
Abstract
Conservation of the cortical granule serine protease during fertilization in echinoderms was tested both functionally in sea stars, and computationally throughout the echinoderm phylum. We find that the inhibitor of serine protease (soybean trypsin inhibitor) effectively blocks proper transition of the sea star fertilization envelope into a protective sperm repellent, whereas inhibitors of the other main types of proteases had no effect. Scanning the transcriptomes of 15 different echinoderm ovaries revealed sequences of high conservation to the originally identified sea urchin cortical serine protease, CGSP1. These conserved sequences contained the catalytic triad necessary for enzymatic activity, and the tandemly repeated LDLr-like repeats. We conclude that the protease involved in the slow block to polyspermy is an essential and conserved element of fertilization in echinoderms, and may provide an important reagent for identification and testing of the cell surface proteins in eggs necessary for sperm binding.
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Affiliation(s)
- Nathalie Oulhen
- Department of Molecular and Cell Biology and Biochemistry, Brown University, 185 Meeting St., Providence, RI 02912, USA
| | - Dongdong Xu
- Department of Molecular and Cell Biology and Biochemistry, Brown University, 185 Meeting St., Providence, RI 02912, USA; Marine Fishery Institute of Zhejiang Province, Key Lab of Mariculture and Enhancement of Zhejiang Province, 316100 Zhoushan, Zhejiang Province, PR China
| | - Gary M Wessel
- Department of Molecular and Cell Biology and Biochemistry, Brown University, 185 Meeting St., Providence, RI 02912, USA.
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