1. Transcriptome Analysis Reveals Different Responsive Patterns to Nitrogen Deficiency in Two Wheat Near-Isogenic Lines Contrasting for Nitrogen Use Efficiency
- Author
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Xinbo Zhang, Quan Ma, Fujian Li, Yonggang Ding, Yuan Yi, Min Zhu, Jinfeng Ding, Chunyan Li, Wenshan Guo, and Xinkai Zhu
- Subjects
near-isogenic lines (NILs) ,nitrogen use efficiency (NUE) ,nitrogen deficiency ,RNA sequencing (RNA-seq) ,qRT-PCR ,Biology (General) ,QH301-705.5 - Abstract
The development of crop cultivars with high nitrogen use efficiency (NUE) under low-N fertilizer inputs is imperative for sustainable agriculture. However, there has been little research on the molecular mechanisms underlying enhanced resilience to low N in high-NUE plants. The comparison of the transcriptional responses of genotypes contrasting for NUE will facilitate an understanding of the key molecular mechanism of wheat resilience to low-N stress. In the current study, the RNA sequencing (RNA-seq) technique was employed to investigate the genotypic difference in response to N deficiency between two wheat NILs (1Y, high-NUE, and 1W, low-NUE). In our research, high- and low-NUE wheat NILs showed different patterns of gene expression under N-deficient conditions, and these N-responsive genes were classified into two major classes, including “frontloaded genes” and “relatively upregulated genes”. In total, 103 and 45 genes were identified as frontloaded genes in high-NUE and low-NUE wheat, respectively. In summary, our study might provide potential directions for further understanding the molecular mechanism of high-NUE genotypes adapting to low-N stress.
- Published
- 2021
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