Asexual Reproduction Does Not Apparently Increase the Rate of Chromosomal Evolution: Karyotype Stability in Diploid and Triploid Clonal Hybrid Fish (Cobitis, Cypriniformes, Teleostei)
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F16%3AA1701I7V" target="_blank" >RIV/61988987:17310/16:A1701I7V - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/67985904:_____/16:00458489 RIV/00216208:11310/16:10325884 RIV/61988987:17310/16:A21025GG
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Asexual Reproduction Does Not Apparently Increase the Rate of Chromosomal Evolution: Karyotype Stability in Diploid and Triploid Clonal Hybrid Fish (Cobitis, Cypriniformes, Teleostei)
Popis výsledku v původním jazyce
Interspecific hybridization, polyploidization and transitions from sexuality to asexuality considerablyaffect organismal genomes. Especially the last mentioned process has beenassumed to play a significant role in the initiation of chromosomal rearrangements, causingincreased rates of karyotype evolution. We used cytogenetic analysis and molecular datingof cladogenetic events to compare the rate of changes of chromosome morphology and karyotypein asexually and sexually reproducing counterparts in European spined loach fish(Cobitis). We studied metaphases of three sexually reproducing species and their diploidand polyploid hybrid clones of different age of origin. The material includes artificial F1hybrid strains, representatives of lineage originated in Holocene epoch, and also individualsof an oldest known age to date (roughly 0.37 MYA). Thereafter we applied GISH techniqueas a marker to differentiate parental chromosomal sets in hybrids. Although the sexualspecies accumulated remarkable chromosomal rearrangements after their speciation, weobserved no differences in chromosome numbers and/or morphology among karyotypesof asexual hybrids. These hybrids possess chromosome sets originating from respectiveparental species with no cytogenetically detectable recombinations, suggesting theirintegrity even in a long term. The switch to asexual reproduction thus did not provoke anysignificant acceleration of the rate of chromosomal evolution in Cobitis. Asexual animalsdescribed in other case studies reproduce ameiotically, while Cobitis hybrids describedhere produce eggs likely through modified meiosis. Therefore, our findings indicate that theeffect of asexuality on the rate of chromosomal change may be context-dependent ratherthan universal and related to particular type of asexual reproduction.
Název v anglickém jazyce
Asexual Reproduction Does Not Apparently Increase the Rate of Chromosomal Evolution: Karyotype Stability in Diploid and Triploid Clonal Hybrid Fish (Cobitis, Cypriniformes, Teleostei)
Popis výsledku anglicky
Interspecific hybridization, polyploidization and transitions from sexuality to asexuality considerablyaffect organismal genomes. Especially the last mentioned process has beenassumed to play a significant role in the initiation of chromosomal rearrangements, causingincreased rates of karyotype evolution. We used cytogenetic analysis and molecular datingof cladogenetic events to compare the rate of changes of chromosome morphology and karyotypein asexually and sexually reproducing counterparts in European spined loach fish(Cobitis). We studied metaphases of three sexually reproducing species and their diploidand polyploid hybrid clones of different age of origin. The material includes artificial F1hybrid strains, representatives of lineage originated in Holocene epoch, and also individualsof an oldest known age to date (roughly 0.37 MYA). Thereafter we applied GISH techniqueas a marker to differentiate parental chromosomal sets in hybrids. Although the sexualspecies accumulated remarkable chromosomal rearrangements after their speciation, weobserved no differences in chromosome numbers and/or morphology among karyotypesof asexual hybrids. These hybrids possess chromosome sets originating from respectiveparental species with no cytogenetically detectable recombinations, suggesting theirintegrity even in a long term. The switch to asexual reproduction thus did not provoke anysignificant acceleration of the rate of chromosomal evolution in Cobitis. Asexual animalsdescribed in other case studies reproduce ameiotically, while Cobitis hybrids describedhere produce eggs likely through modified meiosis. Therefore, our findings indicate that theeffect of asexuality on the rate of chromosomal change may be context-dependent ratherthan universal and related to particular type of asexual reproduction.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
EG - Zoologie
OECD FORD obor
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Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Ostatní
Rok uplatnění
2016
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
plos ONe
ISSN
1932-6203
e-ISSN
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Svazek periodika
11
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
18
Strana od-do
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Kód UT WoS článku
000369527800036
EID výsledku v databázi Scopus
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