Natural variation in CHELATASE SUBUNIT I-A increases grain weight and enhances wheat yield
文献类型： 外文期刊
作者： Wei, Bo 1 ; Liu, Yike 2 ; Lyu, Mingjie 3 ; Chen, Rui 3 ; Ma, Jian 4 ; Yin, Changbin 5 ; Huang, Ju 1 ; Peng, Lixin 1 ; Fu, Zhen 1 ; Song, Qilu 1 ; Lu, Fei 5 ; Zhang, Xiangqi 5 ; Jiao, Yuling 6 ;
作者机构： 1.Peking Univ, State Key Lab Wheat Improvement, Shandong Lab Adv Agr Sci Weifang, Inst Adv Agr Sci, Weifang 261325, Shandong, Peoples R China
2.Hubei Acad Agr Sci, Hubei Key Lab Food Crop Germplasm & Genet Improvem, Key Lab Crop Mol Breeding, Inst Food Crops,Minist Agr & Rural Affairs, Wuhan 430064, Hubei, Peoples R China
3.Tianjin Acad Agr Sci, State Key Lab Vegetable Biobreeding, Tianjin 300192, Peoples R China
4.Sichuan Agr Univ, Triticeae Res Inst, State Key Lab Crop Gene Explorat & Utilizat Southw, Chengdu 611130, Sichuan, Peoples R China
5.Chinese Acad Sci, Inst Genet & Dev Biol, Innovat Acad Seed Design, Beijing 100101, Peoples R China
6.Peking Univ, Sch Life Sci, State Key Lab Gene Funct & Modulat Res, Beijing 100871, Peoples R China
7.Peking Univ, Acad Adv Interdisciplinary Studies, Peking Tsinghua Ctr Life Sci, Ctr Quantitat Biol, Beijing 100871, Peoples R China
8.Peking Univ, Inst Adv Agr Sci, Shandong Lab Adv Agr Sci Weifang, Weifang 261325, Shandong, Peoples R China
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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