Inversions of chromosome arms 4AL and 2BS in wheat invert the patterns of chiasma distribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F12%3A00380696" target="_blank" >RIV/61389030:_____/12:00380696 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00412-011-0354-5" target="_blank" >http://dx.doi.org/10.1007/s00412-011-0354-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00412-011-0354-5" target="_blank" >10.1007/s00412-011-0354-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Inversions of chromosome arms 4AL and 2BS in wheat invert the patterns of chiasma distribution

Popis výsledku v původním jazyce

In many species, including wheat, crossing over is distal, and the proximal regions of chromosome arms contribute little to genetic maps. This was thought to be a consequence of terminal initiation of synapsis favoring distal crossing over. However, in an inverted rye chromosome arm, the pattern of metaphase I chiasmata was also inverted, suggesting that crossover frequencies were specific to chromosome segments. Here, wheat chromosome arms 2BS and 4AL, with essentially entire arms inverted in reverse tandem duplications (rtd), were studied in the MI of meiosis. Inversion-duplication placed the recombining segments in the middle of the arms. While the overall pairing frequencies of the inverted-duplicated arms were considerably reduced relative to normal arms, chiasmata, if present, were always located in the same regions as in structurally normal arms, and relative chiasma frequencies remained the same. The frequencies of fragment or fragment + bridge configurations in AI and AII indi

Název v anglickém jazyce

Inversions of chromosome arms 4AL and 2BS in wheat invert the patterns of chiasma distribution

Popis výsledku anglicky

In many species, including wheat, crossing over is distal, and the proximal regions of chromosome arms contribute little to genetic maps. This was thought to be a consequence of terminal initiation of synapsis favoring distal crossing over. However, in an inverted rye chromosome arm, the pattern of metaphase I chiasmata was also inverted, suggesting that crossover frequencies were specific to chromosome segments. Here, wheat chromosome arms 2BS and 4AL, with essentially entire arms inverted in reverse tandem duplications (rtd), were studied in the MI of meiosis. Inversion-duplication placed the recombining segments in the middle of the arms. While the overall pairing frequencies of the inverted-duplicated arms were considerably reduced relative to normal arms, chiasmata, if present, were always located in the same regions as in structurally normal arms, and relative chiasma frequencies remained the same. The frequencies of fragment or fragment + bridge configurations in AI and AII indi

Druh

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

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Chromosoma

ISSN

0009-5915

e-ISSN

—

Svazek periodika

121

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

201-208

Kód UT WoS článku

000302054300008

EID výsledku v databázi Scopus

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