QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization

	QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization
	Hao, Ming ; Luo, Jiangtao ; Zeng, Deying ; Zhang, Li ; Ning, Shunzong ; Yuan, Zhongwei ; Yan, Zehong ; Zhang, Huaigang ; Zheng, Youliang ; Feuillet, Catherine ; Choulet, Frederic ; Yen, Yang ; Zhang, Lianquan ; Liu, Dengcai
刊名	G3-GENES GENOMES GENETICS ; Hao, M; Luo, JT; Zeng, DY; Zhang, L; Ning, SZ; Yuan, ZW; Yan, ZH; Zhang, HG; Zheng, YL; Feuillet, C; Choulet, F; Yen, Y; Zhang, LQ; Liu, DC.QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization,G3-GENES GENOMES GENETICS,2014,4(10):1943
	2014-10-01
英文摘要	Meiotic nonreduction resulting in unreduced gametes is thought to be the predominant mechanism underlying allopolyploid formation in plants. Until now, however, its genetic base was largely unknown. The allohexaploid crop common wheat (Triticum aestivum L.), which originated from hybrids of T. turgidum L. with Aegilops tauschii Cosson, provides a model to address this issue. Our observations of meiosis in pollen mother cells from T. turgidumxAe. tauschii hybrids indicated that first division restitution, which exhibited prolonged cell division during meiosis I, was responsible for unreduced gamete formation. A major quantitative trait locus (QTL) for this trait, named QTug.sau-3B, was detected on chromosome 3B in two T. turgidumxAe. tauschii haploid populations. This QTL is situated between markers Xgwm285 and Xcfp1012 and covered a genetic distance of 1 cM in one population. QTug.sau-3B is a haploid-dependent QTL because it was not detected in doubled haploid populations. Comparative genome analysis indicated that this QTL was close to Ttam-3B, a collinear homolog of tam in wheat. Although the relationship between QTug.sau-3B and Ttam requires further study, high frequencies of unreduced gametes may be related to reduced expression of Ttam in wheat.; Meiotic nonreduction resulting in unreduced gametes is thought to be the predominant mechanism underlying allopolyploid formation in plants. Until now, however, its genetic base was largely unknown. The allohexaploid crop common wheat (Triticum aestivum L.), which originated from hybrids of T. turgidum L. with Aegilops tauschii Cosson, provides a model to address this issue. Our observations of meiosis in pollen mother cells from T. turgidumxAe. tauschii hybrids indicated that first division restitution, which exhibited prolonged cell division during meiosis I, was responsible for unreduced gamete formation. A major quantitative trait locus (QTL) for this trait, named QTug.sau-3B, was detected on chromosome 3B in two T. turgidumxAe. tauschii haploid populations. This QTL is situated between markers Xgwm285 and Xcfp1012 and covered a genetic distance of 1 cM in one population. QTug.sau-3B is a haploid-dependent QTL because it was not detected in doubled haploid populations. Comparative genome analysis indicated that this QTL was close to Ttam-3B, a collinear homolog of tam in wheat. Although the relationship between QTug.sau-3B and Ttam requires further study, high frequencies of unreduced gametes may be related to reduced expression of Ttam in wheat.
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/4182]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Hao, Ming,Luo, Jiangtao,Zeng, Deying,et al. QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization[J]. G3-GENES GENOMES GENETICS, Hao, M; Luo, JT; Zeng, DY; Zhang, L; Ning, SZ; Yuan, ZW; Yan, ZH; Zhang, HG; Zheng, YL; Feuillet, C; Choulet, F; Yen, Y; Zhang, LQ; Liu, DC.QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization,G3-GENES GENOMES GENETICS,2014,4(10):1943,2014.
APA	Hao, Ming.,Luo, Jiangtao.,Zeng, Deying.,Zhang, Li.,Ning, Shunzong.,...&Liu, Dengcai.(2014).QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization.G3-GENES GENOMES GENETICS.
MLA	Hao, Ming,et al."QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization".G3-GENES GENOMES GENETICS (2014).