Genetic and karyotype divergence between parents affect clonality and sterility in hybrids

Author:

Marta Anatolie1ORCID,Tichopád Tomáš1ORCID,Bartoš Oldřich2ORCID,Klíma Jiří3,Shah Mujahid Ali4ORCID,Bohlen Vendula Šlechtová5,Bohlen Joerg5,Halačka Karel1,Choleva Lukáš6,Stöck Matthias7ORCID,Dedukh Dmitrij1ORCID,Janko Karel16ORCID

Affiliation:

1. Laboratory of Non-Mendelian Evolution, Institute of Animal Physiology and Genetics of the CAS

2. Military Health Institute, Military Medical Agency

3. Laboratory of Cell Regeneration and Plasticity, Institute of Animal Physiology and Genetics of the CAS

4. Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice

5. Laboratory of Fish genetics, Institute of Animal Physiology and Genetics of the CAS

6. Department of Biology and Ecology, Faculty of Science, University of Ostrava

7. Leibniz-Institute of Freshwater Ecology and Inland Fisheries - IGB

Abstract

Asexual reproduction can be triggered by interspecific hybridization, but its emergence is supposedly rare, relying on exceptional combinations of suitable genomes. To examine how genomic and karyotype divergence between parental lineages affect the incidence of asexual gametogenesis, we experimentally hybridized fishes (Cobitidae) across a broad phylogenetic spectrum, assessed by whole exome data. Gametogenic pathways generally followed a continuum from sexual reproduction in hybrids between closely related evolutionary lineages to sterile or inviable crosses between distant lineages. However, most crosses resulted in a combination of sterile males and asexually reproducing females. Their gametes usually experienced problems in chromosome pairing, but females also produced a certain proportion of oocytes with premeiotically duplicated genomes, enabling their development into clonal eggs. Interspecific hybridization may thus commonly affect cell cycles in a specific way, allowing the formation of unreduced oocytes. The emergence of asexual gametogenesis appears tightly linked to hybrid sterility and constitutes an inherent part of the extended speciation continuum.

Funder

Grantová Agentura České Republiky

Ministerstvo Školství, Mládeže a Tělovýchovy

Ministerul Educației, Culturii și Cercetării

Publisher

eLife Sciences Publications, Ltd

Subject

General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3