文献类型： 外文期刊
第一作者： Wei, Bo
作者： Wei, Bo;Huang, Ju;Peng, Lixin;Fu, Zhen;Song, Qilu;Liu, Yike;Lyu, Mingjie;Chen, Rui;Ma, Jian;Yin, Changbin;Lu, Fei;Zhang, Xiangqi;Jiao, Yuling;Jiao, Yuling;Jiao, Yuling
作者机构：
期刊名称：PLANT CELL （ 影响因子：11.6； 五年影响因子：12.1 ）
ISSN： 1040-4651
年卷期： 2025 年 37 卷 9 期
页码：
收录情况： SCI
摘要： Grain weight is a major determinant of wheat (Triticum aestivum L.) yield and is controlled by quantitative trait loci (QTLs) derived from natural variations. Here, we report the cloning of a major yield QTL in bread wheat that functions in the chlorophyll biosynthesis pathway. We found that the natural variation of CHELATASE SUBUNIT I-A (CHLI-A), encoding a magnesium chelatase subunit, enhances chlorophyll content and photosynthesis rate, leading to increased leaf area and grain weight. Increasing CHLI-A expression increases grain weight, indicating that photosynthesis is a limiting factor of wheat yield potential. The CHLI-A gene is absent in a portion of elite varieties, suggesting the potential of using this gene to improve grain yield in wheat. Manipulating and optimizing photosynthesis-related genes to increase grain weight offers a viable strategy for sustaining crop yields.
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