启动子区域的结构变异调控水稻颖壳颜色。
Structural variation in the promoter regulates the hull color of rice.
作者信息
Du Chengxing, Wang Hao, Zhong Guangrong, Yan Xilan, Di Kehan, Li Longkang, Zhang Senhai, Yang Nangu, Wang Yangkai, Chen Weilan, Yuan Hua, Tu Bin, Xiong Jiawei, Zhong Zhaohui, Wang Yuping, Li Shigui, Qin Peng, Ma Bingtian
机构信息
State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan China.
出版信息
Mol Breed. 2025 May 29;45(6):53. doi: 10.1007/s11032-025-01569-x. eCollection 2025 Jun.
UNLABELLED
Rice hull color (HC) is crucial for improving the mechanization efficiency of hybrid rice seed production. However, the genetic resources for hull color currently available for practical production are limited, highlighting an urgent need to explore natural variations that can be utilized in breeding. In this study, we conducted a genome-wide association study (GWAS) on the hull color of 301 rice germplasm resources and identified a significant quantitative trait locus (QTL) on chromosome 3. In this QTL, we identified a 7.3 kb natural structural variation (SV) in the ( promoter region, which suppresses the expression of and leads to the golden hull phenotype. We have screened seven germplasm resources that contain this natural variation. By introducing ™ into U1S, the hull color of U1S™ remains stable and is unaffected by drying time, demonstrating its potential value for breeding applications. Our study provides valuable natural variations and germplasm resources for the mechanized production of hybrid rice.
SUPPLEMENTARY INFORMATION
The online version contains supplementary material available at 10.1007/s11032-025-01569-x.
未标注
稻壳颜色（HC）对于提高杂交水稻制种的机械化效率至关重要。然而，目前可用于实际生产的稻壳颜色遗传资源有限，这凸显了迫切需要探索可用于育种的自然变异。在本研究中，我们对301份水稻种质资源的稻壳颜色进行了全基因组关联研究（GWAS），并在第3号染色体上鉴定出一个显著的数量性状位点（QTL）。在这个QTL中，我们在（启动子区域鉴定出一个7.3 kb的自然结构变异（SV），它抑制了（的表达并导致金色稻壳表型。我们筛选出了7份含有这种自然变异的种质资源。通过将（导入U1S，U1S（的稻壳颜色保持稳定，不受干燥时间的影响，证明了其在育种应用中的潜在价值。我们的研究为杂交水稻的机械化生产提供了有价值的自然变异和种质资源。
补充信息
在线版本包含可在10.1007/s11032-025-01569-x获取的补充材料。
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