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- Title
Genome-wide association study and transcriptome analysis reveal new QTL and candidate genes for nitrogen-deficiency tolerance in rice.
- Authors
Qing Li; Xueli Lu; Changjian Wang; Lan Shen; Liping Dai; Jinli He; Long Yang; Peiyuan Li; Yifeng Hong; Qiang Zhang; Guojun Dong; Jiang Hu; Guangheng Zhang; Deyong Ren; Zhenyu Gao; Longbiao Guo; Qian Qian; Li Zhu; Dali Zeng
- Abstract
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.
- Subjects
GENOME-wide association studies; TRANSCRIPTOMES; RICE genetics; SUSTAINABLE agriculture; RNA sequencing
- Publication
Crop Journal (2095-5421), 2022, Vol 10, Issue 4, p942
- ISSN
2095-5421
- Publication type
Article
- DOI
10.1016/j.cj.2021.12.006