Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F13%3A00395682" target="_blank" >RIV/67985939:_____/13:00395682 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389030:_____/13:00395682

Výsledek na webu

<a href="http://dx.doi.org/10.1093/molbev/mst106" target="_blank" >http://dx.doi.org/10.1093/molbev/mst106</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/molbev/mst106" target="_blank" >10.1093/molbev/mst106</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae)

Popis výsledku v původním jazyce

Sequence variation and genomic organization of 45S and 5S rDNA families in the allohexaploid grass Thinopyrum intermedium showed that both families have undergone different patterns of evolution. ITS sequences residing within the arrays of two subgenomesout of three got homogenized towards one major ribotype, while the third subgenome contained a minor proportion of distinct unhomogenized copies. Homogenization mechanisms such as unequal crossover and/or gene conversion were coupled with the loss of certain 45S rDNA loci. Unlike in the 45S family, the data suggest that neither interlocus homogenization among homeologous chromosomes nor locus loss occurred in 5S rDNA. 5S sequences suggested the contributions from Aegilops to the intermediate wheatgrass? genome, which is a new finding with implications in wheat improvement.

Název v anglickém jazyce

Contrasting patterns of evolution of 45S and 5S rDNA families uncover new aspects in the genome constitution of the agronomically important grass Thinopyrum intermedium (Triticeae)

Popis výsledku anglicky

Sequence variation and genomic organization of 45S and 5S rDNA families in the allohexaploid grass Thinopyrum intermedium showed that both families have undergone different patterns of evolution. ITS sequences residing within the arrays of two subgenomesout of three got homogenized towards one major ribotype, while the third subgenome contained a minor proportion of distinct unhomogenized copies. Homogenization mechanisms such as unequal crossover and/or gene conversion were coupled with the loss of certain 45S rDNA loci. Unlike in the 45S family, the data suggest that neither interlocus homogenization among homeologous chromosomes nor locus loss occurred in 5S rDNA. 5S sequences suggested the contributions from Aegilops to the intermediate wheatgrass? genome, which is a new finding with implications in wheat improvement.

Druh

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

CEP obor

EF - Botanika

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-04454S" target="_blank" >GA13-04454S: Cizorodý genetický materiál v genomu Elymus repens a ostatních Triticeae: jeho charakteristika, původ a evoluční význam.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Molecular Biology and Evolution

ISSN

0737-4038

e-ISSN

—

Svazek periodika

30

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

2065-2086

Kód UT WoS článku

000323616600007

EID výsledku v databázi Scopus

—