Examining Two Sets of Introgression Lines in Rice (Oryza sativa L.) Reveals Favorable Alleles that Improve Grain Zn and Fe Concentrations

doi:10.1371/journal.pone.0131846

	Examining Two Sets of Introgression Lines in Rice (Oryza sativa L.) Reveals Favorable Alleles that Improve Grain Zn and Fe Concentrations
	Xu, Qin 1; Zheng, Tian-Qing 1; Hu, Xia 1; Cheng, Li-Rui 1; Xu, Jian-Long 1,2; Shi, Yu-Min 3; Li, Zhi-Kang 1,2
刊名	PLOS ONE
	2015
卷号	10 期号:7 页码:-
ISSN号	1932-6203
DOI	10.1371/journal.pone.0131846
通讯作者	Xu, Qin
英文摘要	In the modern world, the grain mineral concentration (GMC) in rice (Oryza sativa L.) not only includes important micronutrient elements such as iron (Fe) and zinc (Zn), but it also includes toxic heavy metal elements, especially cadmium (Cd) and lead (Pb). To date, the genetic mechanisms underlying the regulation of GMC, especially the genetic background and G x E effects of GMC, remain largely unknown. In this study, we adopted two sets of backcross introgression lines (BILs) derived from IR75862 (a Zn-dense rice variety) as the donor parent and two elite indica varieties, Ce258 and Zhongguangxiang1, as recurrent parents to detect QTL affecting GMC traits including Fe, Zn, Cd and Pb concentrations in two environments. We detected a total of 22 loci responsible for GMC traits, which are distributed on all 12 rice chromosomes except 5, 9 and 10. Six genetic overlap (GO) regions affecting multiple elements were found, in which most donor alleles had synergistic effects on GMC. Some toxic heavy metal-independent loci (such as qFe1, qFe2 and qZn12) and some regions that have opposite genetic effects on micronutrient (Fe and Zn) and heavy metal element (Pb) concentrations (such as GO-IV) may be useful for marker-assisted biofortification breeding in rice. We discuss three important points affecting biofortification breeding efforts in rice, including correlations between different GMC traits, the genetic background effect and the G x E effect.
学科主题	Multidisciplinary Sciences
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000358162300064
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/4692]
专题	作物科学研究所_重大科学工程项目管理处
作者单位	1.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100193, Peoples R China 2.Chinese Acad Agr Sci, Inst Agr Genom Shenzhen, Shenzhen, Peoples R China 3.Guangxi Acad Agr Sci, Rice Res Inst, Nanning, Peoples R China
推荐引用方式 GB/T 7714	Xu, Qin,Zheng, Tian-Qing,Hu, Xia,et al. Examining Two Sets of Introgression Lines in Rice (Oryza sativa L.) Reveals Favorable Alleles that Improve Grain Zn and Fe Concentrations[J]. PLOS ONE,2015,10(7):-.
APA	Xu, Qin.,Zheng, Tian-Qing.,Hu, Xia.,Cheng, Li-Rui.,Xu, Jian-Long.,...&Li, Zhi-Kang.(2015).Examining Two Sets of Introgression Lines in Rice (Oryza sativa L.) Reveals Favorable Alleles that Improve Grain Zn and Fe Concentrations.PLOS ONE,10(7),-.
MLA	Xu, Qin,et al."Examining Two Sets of Introgression Lines in Rice (Oryza sativa L.) Reveals Favorable Alleles that Improve Grain Zn and Fe Concentrations".PLOS ONE 10.7(2015):-.