Dynamic QTL Analysis of Rice Protein Content and Protein Index Using Recombinant Inbred Lines
文献类型: 外文期刊
第一作者: Zheng, Leina
作者: Zheng, Leina;Zhang, Wenwei;Chen, Xingang;Ma, Jing;Chen, Weiwei;Zhao, Zhigang;Wan, Jianmin;Zhai, Huqu;Wan, Jianmin
作者机构:
关键词: gene: expression;proteins: nutrient;protein content;nutritional quality;genetic information;protein accumulation;grain filling;developmental behavior;spatio-temporal expression;protein index
期刊名称:JOURNAL OF PLANT BIOLOGY ( 影响因子:2.434; 五年影响因子:2.455 )
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收录情况: SCI
摘要: Protein content (PC) and protein index (PI) play important roles in determining nutritional quality in rice (Oryza sativa L.). We used 71 lines derived from "Asominori/IR24" to analyze the developmental behavior of PC and PI through unconditional and conditional QTL mapping methods. In all, 10 unconditional QTLs and 6 conditional QTLs for PC, and 11 unconditional QTLs and 9 conditional QTLs for PI, were identified at four stages of grain filling. More were identified in the first three stages than at the final stage. Temporal patterns of gene expression for PC and PI differed over time, with several QTLs being expressed across two or three stages but many being expressed at only one stage. Some of these QTLs were closely linked with maturity QTLs reported previously. Many QTLs for PC and PI were co-localized, supporting the significant correlation found between PC and PI. Our results suggest that dynamic QTL mapping might be a valid means for revealing more genetic information about protein accumulations during seed development.
分类号: Q94
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