Počet záznamů: 1

Nondisjunction in Favor of a Chromosome: The Mechanism of Rye B Chromosome Drive during Pollen Mitosis

SYSNO ASEP	0384793
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Nondisjunction in Favor of a Chromosome: The Mechanism of Rye B Chromosome Drive during Pollen Mitosis
Tvůrce(i)	Banaei-Moghaddam, A.M. (DE) Schubert, V. (DE) Kumke, K. (DE) Weiβ, O. (DE) Klemme, S. (DE) Nagaki, K. (JP) Macas, Jiří (BC-A)_{RID, ORCID, SAI} González-Sánchez, M. (ES) Heredia, V. (ES) Gómez-Revilla, D. (ES) González-García, M. (ES) Vega, J.M. (ES) Puertas, M.J. (ES) Houben, A. (DE)
Celkový počet autorů	14
Zdroj.dok.	Plant Cell. - : Oxford University Press - ISSN 1040-4651 Roč. 24, č. 10 (2012), s. 4124-4134
Poč.str.	11 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	US - Spojené státy americké
Klíč. slova	chromosomes ; centromere ; repeats
Vědní obor RIV	EB - Genetika a molekulární biologie
CEZ	AV0Z50510513 - UMBR-M, BC-A (2005-2011)
UT WOS	000312378300020
DOI	10.1105/tpc.112.105270
Anotace	B chromosomes (Bs) are supernumerary components of the genome and do not confer any advantages on the organisms that harbor them. The maintenance of Bs in natural populations is possible by their transmission at higher than Mendelian frequencies. Although drive is the key for understanding B chromosomes, the mechanism is largely unknown. We provide direct insights into the cellular mechanism of B chromosome drive in the male gametophyte of rye (Secale cereale). We found that nondisjunction of Bs is accompanied by centromere activity and is likely caused by extended cohesion of the B sister chromatids. The B centromere originated from an A centromere, which accumulated B-specific repeats and rearrangements. Because of unequal spindle formation at the first pollen mitosis, nondisjoined B chromatids preferentially become located toward the generative pole. The failure to resolve pericentromeric cohesion is under the control of the B-specific nondisjunction control region.
Pracoviště	Biologické centrum (od r. 2006)
Kontakt	Dana Hypšová, eje@eje.cz, Tel.: 387 775 214
Rok sběru	2013

Počet záznamů: 1