Holokinetic centromeres and efficient telomere healing enable rapid karyotype evolution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F15%3A00081618" target="_blank" >RIV/00216224:14740/15:00081618 - isvavai.cz</a>

Výsledek na webu

<a href="http://download.springer.com/static/pdf/859/art%253A10.1007%252Fs00412-015-0524-y.pdf?originUrl=http%3A%2F%2Flink.springer.com%2Farticle%2F10.1007%2Fs00412-015-0524-y&token2=exp=1456303136~acl=%2Fstatic%2Fpdf%2F859%2Fart%25253A10.1007%25252Fs00412-015-05" target="_blank" >http://download.springer.com/static/pdf/859/art%253A10.1007%252Fs00412-015-0524-y.pdf?originUrl=http%3A%2F%2Flink.springer.com%2Farticle%2F10.1007%2Fs00412-015-0524-y&token2=exp=1456303136~acl=%2Fstatic%2Fpdf%2F859%2Fart%25253A10.1007%25252Fs00412-015-05</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00412-015-0524-y" target="_blank" >10.1007/s00412-015-0524-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Holokinetic centromeres and efficient telomere healing enable rapid karyotype evolution

Popis výsledku v původním jazyce

Species with holocentric chromosomes are often characterized by a rapid karyotype evolution. In contrast to species with monocentric chromosomes where acentric fragments are lost during cell division, breakage of holocentric chromosomes creates fragmentswith normal centromere activity. To decipher the mechanism that allows holocentric species an accelerated karyotype evolution via chromosome breakage, we analyzed the chromosome complements of irradiated Luzula elegans plants. The resulting chromosomalfragments and rearranged chromosomes revealed holocentromere-typical CENH3 and histone H2AThr120ph signals as well as the same mitotic mobility like unfragmented chromosomes. Newly synthesized telomeres at break points become detectable 3 weeks after irradiation. The presence of active telomerase suggests a telomerase-based mechanism of chromosome healing. A successful transmission of holocentric chromosome fragments across different generations was found for most offspring of irradiated

Název v anglickém jazyce

Holokinetic centromeres and efficient telomere healing enable rapid karyotype evolution

Popis výsledku anglicky

Species with holocentric chromosomes are often characterized by a rapid karyotype evolution. In contrast to species with monocentric chromosomes where acentric fragments are lost during cell division, breakage of holocentric chromosomes creates fragmentswith normal centromere activity. To decipher the mechanism that allows holocentric species an accelerated karyotype evolution via chromosome breakage, we analyzed the chromosome complements of irradiated Luzula elegans plants. The resulting chromosomalfragments and rearranged chromosomes revealed holocentromere-typical CENH3 and histone H2AThr120ph signals as well as the same mitotic mobility like unfragmented chromosomes. Newly synthesized telomeres at break points become detectable 3 weeks after irradiation. The presence of active telomerase suggests a telomerase-based mechanism of chromosome healing. A successful transmission of holocentric chromosome fragments across different generations was found for most offspring of irradiated

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CE - Biochemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chromosoma

ISSN

0009-5915

e-ISSN

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Svazek periodika

124

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

519-528

Kód UT WoS článku

000365750700008

EID výsledku v databázi Scopus

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