About: SYNTHESIS OF CLONALITY AND POLYPLOIDY IN VERTEBRATE ANIMALS BY HYBRIDIZATION BETWEEN TWO SEXUAL SPECIES

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About: SYNTHESIS OF CLONALITY AND POLYPLOIDY IN VERTEBRATE ANIMALS BY HYBRIDIZATION BETWEEN TWO SEXUAL SPECIES Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Because most clonal vertebrates have hybrid genomic constitutions, tight linkages are assumed among hybridization, clonality, and polyploidy. However, predictions about how these processes mechanistically relate during the switch from sexual to clonal reproduction have not been validated. Therefore, we performed a crossing experiment to test the hypothesis that interspecific hybridization per se initiated clonal diploid and triploid spined loaches (Cobitis) and their gynogenetic reproduction. We reared two F1 families resulting from the crossing of 14 pairs of two sexual species, and found their diploid hybrid constitution and a 1:1 sex ratio. While males were infertile, females produced unreduced nonrecombinant eggs (100%). Synthetic triploid females and males (96.3%) resulted in each of nine backcrossed families from eggs of synthesized diploid F1s fertilized by haploid sperm from sexual males. Five individuals (3.7%) from one backcross family were genetically identical to the somatic cells of the mother and originated via gynogenesis; the sperm of the sexual male only triggered clonal development of the egg. Our reconstruction of the evolutionary route from sexuality to clonality and polyploidy in these fish shows that clonality and gynogenesis may have been directly triggered by interspecific hybridization and that polyploidy is a consequence, not a cause, of clonality. Because most clonal vertebrates have hybrid genomic constitutions, tight linkages are assumed among hybridization, clonality, and polyploidy. However, predictions about how these processes mechanistically relate during the switch from sexual to clonal reproduction have not been validated. Therefore, we performed a crossing experiment to test the hypothesis that interspecific hybridization per se initiated clonal diploid and triploid spined loaches (Cobitis) and their gynogenetic reproduction. We reared two F1 families resulting from the crossing of 14 pairs of two sexual species, and found their diploid hybrid constitution and a 1:1 sex ratio. While males were infertile, females produced unreduced nonrecombinant eggs (100%). Synthetic triploid females and males (96.3%) resulted in each of nine backcrossed families from eggs of synthesized diploid F1s fertilized by haploid sperm from sexual males. Five individuals (3.7%) from one backcross family were genetically identical to the somatic cells of the mother and originated via gynogenesis; the sperm of the sexual male only triggered clonal development of the egg. Our reconstruction of the evolutionary route from sexuality to clonality and polyploidy in these fish shows that clonality and gynogenesis may have been directly triggered by interspecific hybridization and that polyploidy is a consequence, not a cause, of clonality. (en)
Title	SYNTHESIS OF CLONALITY AND POLYPLOIDY IN VERTEBRATE ANIMALS BY HYBRIDIZATION BETWEEN TWO SEXUAL SPECIES SYNTHESIS OF CLONALITY AND POLYPLOIDY IN VERTEBRATE ANIMALS BY HYBRIDIZATION BETWEEN TWO SEXUAL SPECIES (en)
skos:prefLabel	SYNTHESIS OF CLONALITY AND POLYPLOIDY IN VERTEBRATE ANIMALS BY HYBRIDIZATION BETWEEN TWO SEXUAL SPECIES SYNTHESIS OF CLONALITY AND POLYPLOIDY IN VERTEBRATE ANIMALS BY HYBRIDIZATION BETWEEN TWO SEXUAL SPECIES (en)
skos:notation	RIV/67985904:_____/12:00379682!RIV13-GA0-67985904
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA206/06/1763), P(GA206/09/1154), P(GA206/09/1298), P(GA523/08/0824), P(KJB600450902), P(LC06073), Z(AV0Z50450515)
http://linked.open...iv/cisloPeriodika	7
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Rábová, Marie Janko, Karel Choleva, Lukáš Ráb, Petr Šlechtová, Věra Bohlen, Jörg
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav živočišné fyziologie a genetiky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	172954
http://linked.open...ai/riv/idVysledku	RIV/67985904:_____/12:00379682
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	MITOCHONDRIAL-DNA VARIATION; SPINED LOACHES COBITIS; FORMERLY MORABA VIRGO (en)
http://linked.open.../riv/klicoveSlovo	MITOCHONDRIAL-DNA VARIATION FORMERLY MORABA VIRGO SPINED LOACHES COBITIS
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[D2A2B32763DC]
http://linked.open...i/riv/nazevZdroje	Evolution
http://linked.open...in/vavai/riv/obor	EG
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	To what extent does genetic divergence affect an outcome of interspecific hybridization?: The effect on the origin of asexuality Relationships of ploidy level, genome and cell size in model polyploid fish with cytological and physiological impacts on conservation and culture. Biodiversity Research Center Hybrid zones and the dynamics of evolution of asexuality among European loaches (Cobitis) The evolutionary potential of asexual lineages viewed from the other side: the influence of sperm-dependent parthenogen on the parental species General patterns in the colonisation of European freshwater systems as inferred from the molecular phylogeography of fishes
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	66
http://linked.open...iv/tvurceVysledku	Bohlen, Jörg Choleva, Lukáš Janko, Karel Ráb, Petr Rábová, Marie Šlechtová, Věra Gelas de, K.
http://linked.open...ain/vavai/riv/wos	000305945400016
http://linked.open...n/vavai/riv/zamer	Genetic, functional and developmental potential of animal cells, tissues and organisms: their use in medicine, ecology and agriculture
issn	0014-3820
number of pages	13 (xsd:int)
http://bibframe.org/vocab/doi	10.1111/j.1558-5646.2012.01589.x

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