Identification of qLG2, qLG8, and qWG2 as novel quantitative trait loci for grain shape and the allelic analysis in cultivated rice

doi:10.1007/s00425-020-03420-3

	Identification of qLG2, qLG8, and qWG2 as novel quantitative trait loci for grain shape and the allelic analysis in cultivated rice
	Wang, Gao-Jie ; Wang, Ying ; Ying, Jie-Zheng ; Song, Xian-Jun
	2020
发表期刊	PLANTA
ISSN	0032-0935
卷号	252 期号:2
摘要	Main conclusionThree novel QTLs for grain shape were genetically fine mapped, with two of which to a 250-kb target interval on rice chromosome 2 that contains fourteen candidate genes.AbstractGrain shape (grain length, width, and thickness) determines crop yield and grain quality. However, the trait is regulated by numerous naturally occurring quantitative trait loci (QTLs) and the underlying mechanism remains largely unknown. Here, we report the genetic mapping of three new QTLs, qLG2, qWG2, and qLG8 that each exerts a semi-dominant effect on grain shape in cultivated rice. These QTLs were validated using populations derived from the corresponding chromosome segment substitution lines (CSSLs), and were further delimited to small genomic intervals in progeny testing experiments. Especially, qLG2/qWG2 was placed into an about 250-kb genomic candidate region, and 14 predicted ORFs localized within the interval. We also evaluated the individual and pyramiding genetic effect(s) of these QTL(s) using the corresponding nearly isogenic lines, and found that they have additive effects on the traits. Collectively, these findings provided useful information as a tool to improve grain shape in crop breeding programs and established foundations for future QTL cloning.
关键词	Grain length Grain width Grain shape QTL mapping Rice plant
学科领域	Plant Sciences
DOI	10.1007/s00425-020-03420-3
收录类别	SCI
语种	英语
WOS关键词	NATURAL VARIATION ; RARE ALLELE ; SIZE DIVERSITY ; MAJOR QTL ; YIELD ; WEIGHT ; WIDTH ; GENE ; CONTRIBUTES ; ENCODES
WOS研究方向	Plant Sciences
WOS记录号	WOS:000553162500001
出版者	SPRINGER
文献子类	Article
出版地	NEW YORK
EISSN	1432-2048
资助机构	National Key Research and Development Program of China [2016YFD0100402] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [91735302, 91435113, 31471466]
作者邮箱	songxj@ibcas.ac.cn
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/21654
专题	中科院植物分子生理学重点实验室
作者单位	1.[Wang, Gao-Jie 2.Wang, Ying 3.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, 20 Nanxincun, Beijing 100093, Peoples R China 4.China Natl Rice Res Inst, Natl Key Lab Rice Biol, Hangzhou 310006, Peoples R China 5.China Natl Rice Res Inst, Chinese Ctr Rice Improvement, Hangzhou 310006, Peoples R China 6.Grad Univ Chinese Acad Sci, Beijing, Peoples R China 7.Chinese Acad Sci, Innovat Acad Seed Design, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Gao-Jie,Wang, Ying,Ying, Jie-Zheng,et al. Identification of qLG2, qLG8, and qWG2 as novel quantitative trait loci for grain shape and the allelic analysis in cultivated rice[J]. PLANTA,2020,252(2).
APA	Wang, Gao-Jie,Wang, Ying,Ying, Jie-Zheng,&Song, Xian-Jun.(2020).Identification of qLG2, qLG8, and qWG2 as novel quantitative trait loci for grain shape and the allelic analysis in cultivated rice.PLANTA,252(2).
MLA	Wang, Gao-Jie,et al."Identification of qLG2, qLG8, and qWG2 as novel quantitative trait loci for grain shape and the allelic analysis in cultivated rice".PLANTA 252.2(2020).

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