Improving grain yield and salt tolerance by optimizing plant height with beneficial haplotypes in rice (Oryza sativa)

作者：Ruidang Quan, Juan Wang, Hua Qin, Liang Chen, Dinglin Xiao, Zihan Zhao, Zhanying Zhang, Xiaoyang Zhu, Zichao Li, Rongfeng Huang · 发表于：Journal of Advanced Research · 年份：2024 · DOI：10.1016/j.jare.2024.12.007 · 被引用次数：19 · 研究领域：Genetic Mapping and Diversity in Plants and Animals、Plant Stress Responses and Tolerance、Rice Cultivation and Yield Improvement

Regulation of plant height to balance growth–stress trade-offs is a promising strategy for high yielding, salt-tolerant crop breeding. • Optimal plant height is essential to high yield under normal and salt stress conditions in rice. • QTL/genes related to rice plant height and yield overlap in GWAS. • PHS10.1 may regulate carbon metabolism, starch and sucrose metabolism to impact plant growth and grain yield. • Optimization of plant height using beneficial haplotypes improves grain yield under normal and salt stress conditions in rice. Rice ( Oryza sativa L.), a staple food for billions worldwide, is challenged by salt stress. Owing to the limited understanding of the physiological and genetic basis of rice salt tolerance, few genes have been identified as valuable in rice breeding, causing a major bottleneck in the development of high-yield, salt-tolerant rice varieties. This study aims to identify salt tolerance genes/quantitative trait loci (QTLs) with breeding potential in rice. Field trials were conducted with 166 Chinese rice cultivars from saline-affected regions and 412 global rice accessions to assess salt tolerance. Genome-wide association study (GWAS) was performed to identify key loci related to high yield and salt tolerance. Additionally, the impact of introducing beneficial haplotypes on grain yield and salt tolerance was assessed. The optimal rice plant height of 100–120 cm was crucial for sustaining high yield under both normal and salt stress conditions. GWA...