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Genome-wide Association Mapping of Quantitative Trait Loci (QTLs) for Contents of Eight Elements in Brown Rice (Oryza sativa L.)

文献类型： 外文期刊

作者： Nawaz, Zarqa 1 ; Kakar, Kaleem U. 1 ; Li, Xiao-bai 3 ; Li, Shan 1 ; Zhang, Bin 4 ; Shou, Hui-xia 5 ; Shu, Qing-yao 1 ;

作者机构： 1.Zhejiang Univ, Inst Crop Sci, State Key Lab Rice Biol, Hangzhou 310029, Zhejiang, Peoples R China

2.Hubei Collaborat Innovat Ctr Grain Ind, Jingzhou 434025, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Hort Sci, Hangzhou 310021, Zhejiang, Peoples R China

4.Zhejiang Zhijiang Seed Co, Hangzhou 311107, Zhejiang, Peoples R China

5.Zhejiang Univ, Coll Life Sci, State Key Lab Plant Physiol & Biochem, Hangzhou 310058, Zhejiang, Peoples R China

关键词： association mapping;USDA Mini-Core Rice Collection;grain element concentration;molecular markers

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

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年卷期：

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收录情况： SCI

摘要： An association mapping of quantitative trait loci (QTLs) regulating the concentrations of eight elements in brown rice (Oryza sativa L.) was performed using USDA mini-core subset cultivated in two different environments. In addition, correlation between the grain elemental concentrations was also studied. A total of 60 marker loci associated with 8 grain elemental concentrations were identified, and these loci were clustered into 37 genomic regions. Twenty new QTLs were found to be associated with important elements such as Zn, Fe, and P, along with others. Fe concentration was associated with the greatest number of markers in two environments. In addition, several important elemental/metal transporter genes were identified in a few mapped regions. Positive correlation was observed within all grain elemental concentrations. In summary, the results provide insight into the genetic basis of rice grain element accumulation and may help in the identification of genes associated with the accumulation of Zn, Fe, and other essential elements in rice.

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