数字农科院2.0

Genome-wide association study and transcriptome analysis reveal new QTL and candidate genes for nitrogen-deficiency tolerance in rice

文献类型： 外文期刊

作者： Li Qing; Lu Xueli; Wang Changjian; Shen Lan; Dai Liping; He Jinli; Yang Long; Li Peiyuan; Hong Yifeng; Zhang Qiang; Dong Guojun; Hu Jiang; Zhang Guangheng; Ren Deyong; Gao Zhenyu; Guo Longbiao; Qian Qian; Zhu Li; Zeng Dali

作者机构：

期刊名称： Crop Journal

ISSN： 2095-5421

年卷期： 2022 年

页码：

收录情况： SCIE（2022版） ; CSCD（2021-2022年度） ; 科技核心（2021版） ; 农林核心（2020版）

摘要： The development of rice cultivars with improved nitrogen use efficiency (NUE) is desirable for sustainable agriculture. Achieving this goal depends in part on understanding how rice responds to low soil nitrogen (N) and identifying causative genes underlying this trait. To identify quantitative trait loci (QTL) or genes associated with low N response, we conducted a genome-wide association study (GWAS) using a diverse panel of 230 rice accessions and performed a transcriptomic investigation of rice accessions with differential responses to low N stress at two N levels. We detected 411 GWAS-associated genes in 5 QTL and 2722 differentially expressed genes in response to low N, of which 24 were identified by both methods and ranked according to gene annotations, literature queries, gene expression, and genetic diversity analysis. The large-scale datasets obtained from this study reveal low N-responsive characteristics and provide insights towards understanding the regulatory mechanisms of N-deficiency tolerance in rice, and the candidate genes or QTL would be valuable resources for increasing rice NUE via molecular biotechnology. © 2022

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