Genome-wide association study of seedling nitrogen-use efficiency-associated traits in common wheat (Triticum aestivum L.)

文献类型： 外文期刊

第一作者： Shi, Huawei

作者： Shi, Huawei;Wang, Weichong;Wu, Jirong;Hu, Chengmei;Shi, Yugang;Li, Ning;Sun, Daizhen;Wu, Yuxiang;Shi, Huawei;Gao, Lifeng;Yan, Huishu;Ma, Youzhi;Zhou, Yongbin;Xu, Zhaoshi;Chen, Jun;Tang, Wensi;Chen, Kai;Chen, Ming

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关键词： Wheat; NUE; Genome-wide association study; Nitrogen sensitive index; Chlorate inhibition rate

期刊名称：CROP JOURNAL （ 影响因子：6.6； 五年影响因子：6.5 ）

ISSN： 2095-5421

年卷期： 2024 年 12 卷 1 期

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收录情况： SCI

摘要： Nitrogen (N) fertilizer application is essential for crop-plant growth and development. Identifying genetic loci associated with N-use efficiency (NUE) could increase wheat yields and reduce environmental pollution caused by overfertilization. We subjected a panel of 389 wheat accessions to N and chlorate (a nitrate analog) treatments to identify quantitative trait loci (QTL) controlling NUE-associated traits at the wheat seedling stage. Genotyping the panel with a 660K single-nucleotide polymorphism (SNP) array, we identified 397 SNPs associated with N-sensitivity index and chlorate inhibition rate. These SNPs were merged into 49 QTL, of which eight were multi-environment stable QTL and 27 were located near previously reported QTL. A set of 135 candidate genes near the 49 QTL included TaBOX (F-box family protein) and TaERF (ethylene-responsive transcription factor). A Tabox mutant was more sensitive to low-N stress than the wild-type plant. We developed two functional markers for Hap 1, the favorable allele of TaBOX. (c) 2023 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC

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