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

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	QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization
	Hao, Ming 1; Luo, Jiangtao 1; Zeng, Deying 1; Zhang, Li 2; Ning, Shunzong 1; Yuan, Zhongwei 1; Yan, Zehong 1; Zhang, Huaigang 3; Zheng, Youliang 1; Feuillet, Catherine 4; Choulet, Frederic 4; Yen, Yang 5; Zhang, Lianquan 1; Liu, Dengcai 1,3
	2014-10-01
发表期刊	G3-GENES GENOMES GENETICS
ISSN	2160-1836
卷号	4 期号:10 页码:1943-1953
文章类型	Article
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.
关键词	Allopolyploidy Cyca1 First Division Restitution Unreduced Gametes Triticum Aestivum 2/tam
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	SEXUAL POLYPLOIDIZATION ; AEGILOPS-SQUARROSA ; DURUM-WHEAT ; DIVISION RESTITUTION ; MEIOTIC RESTITUTION ; SUBSTITUTION LINES ; FLOWERING PLANTS ; CROP IMPROVEMENT ; GAMETE FORMATION ; CELL-DIVISION
收录类别	SCI
语种	英语
WOS研究方向	Genetics & Heredity
WOS类目	Genetics & Heredity
WOS记录号	WOS:000343928700014
引用统计	被引频次：25[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/4182
专题	中国科学院西北高原生物研究所
作者单位	1.Sichuan Agr Univ Chengdu, Triticeae Res Inst, Wenjiang 611130, Sichuan, Peoples R China 2.Sichuan Agr Univ Chengdu, Inst Ecol Forestry, Wenjiang 611130, Sichuan, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China 4.Univ Clermont Ferrand, INRA, Joint Res Unit Genet Divers & Ecophysiol Cereals, F-63039 Clermont Ferrand, France 5.S Dakota State Univ, Dept Biol & Microbiol, Brookings, SD 57007 USA
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,2014,4(10):1943-1953.
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,4(10),1943-1953.
MLA	Hao, Ming,et al."QTug.sau-3B Is a Major Quantitative Trait Locus for Wheat Hexaploidization".G3-GENES GENOMES GENETICS 4.10(2014):1943-1953.

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