您好，欢迎访问江西省农业科学院 机构知识库！

Fine mapping of a major QTL, qECQ8, for rice taste quality

文献类型： 外文期刊

作者： Zhu, Shan 1 ; Tang, Guoping 1 ; Yang, Zhou 1 ; Han, Ruicai 1 ; Deng, Wei 1 ; Shen, Xianhua 1 ; Huang, Renliang 1 ;

作者机构： 1.Jiangxi Acad Agr Sci, Natl Engn Res Ctr Rice Nanchang, Nanchang 330200, Jiangxi, Peoples R China

2.Jiangxi Acad Agr Sci, Minist Agr & Rural Affairs, Key Lab Germplasm Innovat & Breeding Double Croppi, Nanchang 330200, Peoples R China

3.Jiangxi Acad Agr Sci, Biobreeding Innovat Ctr Jiangxi Prov JXBIC, Nanchang 330200, Peoples R China

4.Jiangxi Acad Agr Sci, Rice Res Inst, Nanchang 330200, Peoples R China

关键词： Rice quality; ECQ; Quantitative trait loci; Candidate gene; Linkage map; Transcriptomics

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.8； 五年影响因子：5.4 ）

ISSN： 1471-2229

年卷期： 2024 年 24 卷 1 期

页码：

收录情况： SCI

摘要： BackgroundRice ECQ (eating and cooking quality) is an important determinant of rice consumption and market expansion. Therefore, improvement of ECQ is one of the primary goals in rice breeding. However, ECQ-related quantitative trait loci (QTL) have not yet been fully revealed. The present study aimed to identify a major effect QTL for rice taste, an important component of ECQ via genotyping-by-sequencing, to reveal the associated molecular mechanisms, and to predict key candidate genes.ResultsA population of F9 recombinant inbred lines resulting from a cross between R668 (national standard of high-quality third class) and R838 (common edible rice) was used to construct a high-density genetic map (2,295.062 cM). The map comprises 639,504 markers distributed on 12 linkage elements with an average genetic distance of 0.004 cM. We detected a major taste-related QTL, qECQ8, which explained 41.4% of phenotypic variance and had LOD values of 4.42-7.73. Using a five-generation NIL population from the backcross of "Ganxiangzhan No. 1" carrying qECQ8 with the recurrent parent R838 (without qECQ8), we narrowed qECQ8 to a 187.5 kb interval between markers M33 and M37 on Chr8. Comparative transcriptomic analysis revealed that photosynthesis, glyoxylate and dicarboxylate metabolism, carbon fixation in photosynthetic organisms, and alpha-linolenic acid metabolism were induced in developing seeds of lines containing qECQ8. Furthermore, we identified two candidate genes in the qECQ8 region, including LOC_Os08g30550 (zinc knuckle family protein), a major candidate for genetic-assisted breeding of high-quality rice.ConclusionOur findings provide important genetic resources for targeted improvement of rice taste quality and may facilitate the genetic breeding of rice ECQ.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：江西省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台