| Autor: |
Yankai Wang, Xiaohui Peng, Xuechun Lian, Qi Yu, Lingli Zhang, Tingting Li, Haoyu Luo, Kaili Yu, Wenli Zhang, Deyi Zhong, Yonghui Zhao, Shengben Li |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Crop Journal, Vol 12, Iss 5, Pp 1414-1425 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2214-5141 |
| DOI: |
10.1016/j.cj.2024.08.004 |
| Popis: |
Phosphorus is a limiting factor in agriculture due to restricted availability in soil and low utilization efficiency of crops. The identification of superior haplotypes of key genes responsible for low-phosphate (Pi) tolerance and their natural variation is important for molecular breeding. In this study, we conducted genome-wide association studies on low-phosphate tolerance coefficients using 152 maize inbred lines, and identified a significant association between SNPs on chromosome 7 and a low-phosphate tolerance coefficient. ZmGRF10 was identified as a candidate gene involved in adaptation of maize to Pi starvation. Expression of ZmGRF10 is induced by Pi starvation. A mutation in ZmGRF10 alleviated Pi starvation stress. RNA-seq analyses revealed significant upregulation of genes encoding various phosphatases in the zmgrf10-1 mutant, suggesting that ZmGRF10 negatively regulates expression of these genes, thereby affecting low-Pi tolerance by suppressing phosphorus remobilization. A superior haplotype with variations in the promoter region exhibited lower transcription activity of ZmGRF10. Our study unveiled a novel gene contributing to tolerance to low-Pi availability with potential to benefit molecular breeding for high Pi utilization. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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