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Xu LY, Wu WT, Bi N, Yan ZJ, Yang F, Yang WJ, Yang JS. A cytological revisit on parthenogenetic Artemia and the deficiency of a meiosis-specific recombinase DMC1 in the possible transition from bisexuality to parthenogenesis. Chromosoma 2023:10.1007/s00412-023-00790-x. [PMID: 36939898 DOI: 10.1007/s00412-023-00790-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/20/2023] [Accepted: 02/27/2023] [Indexed: 03/21/2023]
Abstract
Although parthenogenesis is widespread in nature and known to have close relationships with bisexuality, the transitional mechanism is poorly understood. Artemia is an ideal model to address this issue because bisexuality and "contagious" obligate parthenogenesis independently exist in its congeneric members. In the present study, we first performed chromosome spreading and immunofluorescence to compare meiotic processes of Artemia adopting two distinct reproductive ways. The results showed that, unlike conventional meiosis in bisexual Artemia, meiosis II in parthenogenic Artemia is entirely absent and anaphase I is followed by a single mitosis-like equational division. Interspecific comparative transcriptomics showed that two central molecules in homologous recombination (HR), Dmc1 and Rad51, exhibited significantly higher expression in bisexual versus parthenogenetic Artemia. qRT-PCR indicated that the expression of both genes peaked at the early oogenesis and gradually decreased afterward. Knocking-down by RNAi of Dmc1 in unfertilized females of bisexual Artemia resulted in a severe deficiency of homologous chromosome pairing and produced univalents at the middle oogenesis stage, which was similar to that of parthenogenic Artemia, while in contrast, silencing Rad51 led to no significant chromosome morphological change. Our results indicated that Dmc1 is vital for HR in bisexual Artemia, and the deficiency of Dmc1 may be correlated with or even possibly one of core factors in the transition from bisexuality to parthenogenesis.
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Affiliation(s)
- Lian-Ying Xu
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wen-Tao Wu
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ning Bi
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhi-Jun Yan
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Fan Yang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wei-Jun Yang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jin-Shu Yang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China.
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Phylogeographic reconstruction of the marbled crayfish origin. Commun Biol 2021; 4:1096. [PMID: 34535758 PMCID: PMC8448756 DOI: 10.1038/s42003-021-02609-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/20/2021] [Indexed: 11/08/2022] Open
Abstract
The marbled crayfish (Procambarus virginalis) is a triploid and parthenogenetic freshwater crayfish species that has colonized diverse habitats around the world. Previous studies suggested that the clonal marbled crayfish population descended as recently as 25 years ago from a single specimen of P. fallax, the sexually reproducing parent species. However, the genetic, phylogeographic, and mechanistic origins of the species have remained enigmatic. We have now constructed a new genome assembly for P. virginalis to support a detailed phylogeographic analysis of the diploid parent species, Procambarus fallax. Our results strongly suggest that both parental haplotypes of P. virginalis were inherited from the Everglades subpopulation of P. fallax. Comprehensive whole-genome sequencing also detected triploid specimens in the same subpopulation, which either represent evolutionarily important intermediate genotypes or independent parthenogenetic lineages arising among the sexual parent population. Our findings thus clarify the geographic origin of the marbled crayfish and identify potential mechanisms of parthenogenetic speciation.
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Maiakovska O, Andriantsoa R, Tönges S, Legrand C, Gutekunst J, Hanna K, Pârvulescu L, Novitsky R, Weiperth A, Sciberras A, Deidun A, Ercoli F, Kouba A, Lyko F. Genome analysis of the monoclonal marbled crayfish reveals genetic separation over a short evolutionary timescale. Commun Biol 2021; 4:74. [PMID: 33462402 PMCID: PMC7814009 DOI: 10.1038/s42003-020-01588-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022] Open
Abstract
The marbled crayfish (Procambarus virginalis) represents a very recently evolved parthenogenetic freshwater crayfish species that has invaded diverse habitats in Europe and in Madagascar. However, population genetic analyses have been hindered by the homogeneous genetic structure of the population and the lack of suitable tools for data analysis. We have used whole-genome sequencing to characterize reference specimens from various known wild populations. In parallel, we established a whole-genome sequencing data analysis pipeline for the population genetic analysis of nearly monoclonal genomes. Our results provide evidence for systematic genetic differences between geographically separated populations and illustrate the emerging differentiation of the marbled crayfish genome. We also used mark-recapture population size estimation in combination with genetic data to model the growth pattern of marbled crayfish populations. Our findings uncover evolutionary dynamics in the marbled crayfish genome over a very short evolutionary timescale and identify the rapid growth of marbled crayfish populations as an important factor for ecological monitoring. Olena Maiakovska et al. provide whole-genome sequencing of the parthenogenetic and invasive marbled crayfish and develop a computational framework for data analysis of monoclonal genomes. These data and methodology allow the authors to demonstrate genetic separation between two populations and provide the first size estimate for a marbled crayfish colony, which they used to model population growth patterns.
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Affiliation(s)
- Olena Maiakovska
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Ranja Andriantsoa
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Sina Tönges
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Carine Legrand
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Julian Gutekunst
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Katharina Hanna
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany
| | - Lucian Pârvulescu
- Department of Biology-Chemistry, West University of Timisoara, 16A Pestalozzi St., 300115, Timisoara, Romania
| | - Roman Novitsky
- Department of Water Bioresources and Aquaculture, Dnipro State Agrarian and Economic University, 25 Serhii Efremov St., Dnipro, 49600, Ukraine
| | - András Weiperth
- Department of Aquaculture, Institute for Natural Resources Conservation, Faculty of Agriculture and Environmental Sciences, Szent István University, Páter Károly utca 1, 2100, Gödöllő, Hungary
| | - Arnold Sciberras
- Physical Oceanography Research Group, Department of Geosciences, University of Malta, Msida, MSD 2080, Malta
| | - Alan Deidun
- Physical Oceanography Research Group, Department of Geosciences, University of Malta, Msida, MSD 2080, Malta
| | - Fabio Ercoli
- Chair of Hydrobiology and Fisheries, Institute of Agricultural and Environment Sciences, Estonian University of Life Sciences, Kreutzwaldi 5D, 51006, Tartu, Estonia.,Natural Resources and Environment, Department of Biological and Environmental Science, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Antonin Kouba
- Faculty of Fisheries and Protection of Waters, CENAKVA, University of South Bohemia in České Budějovice, Zátiší 728/II, 38925, Vodňany, Czech Republic
| | - Frank Lyko
- Division of Epigenetics, DKFZ-ZMBH Alliance, German Cancer Research Center, Im Neuenheimer Feld 580, 69120, Heidelberg, Germany.
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