TaCol-B5 modifies spike architecture and enhances grain yield in wheat

文献类型： 外文期刊

第一作者： Zhang, Xiaoyu

作者： Zhang, Xiaoyu;Jia, Haiyan;Li, Tian;Wu, Jizhong;Nagarajan, Ragupathi;Lei, Lei;Powers, Carol;Kan, Chia-Cheng;Carver, Brett F.;Yan, Liuling;Jia, Haiyan;Li, Tian;Wu, Jizhong;Hua, Wei;Liu, Zhiyong;Chen, Charles

作者机构：

期刊名称：SCIENCE （ 影响因子：63.714； 五年影响因子：59.924 ）

ISSN： 0036-8075

年卷期： 2022 年 376 卷 6589 期

页码：

收录情况： SCI

摘要： Spike architecture influences grain yield in wheat. We report the map-based cloning of a gene determining the number of spikelet nodes per spike in common wheat. The cloned gene is named TaCOL-B5 and encodes a CONSTANS-like protein that is orthologous to COL5 in plant species. Constitutive overexpression of the dominant TaCol-B5 allele but without the region encoding B-boxes in a common wheat cultivar increases the number of spikelet nodes per spike and produces more tillers and spikes, thereby enhancing grain yield in transgenic plants under field conditions. Allelic variation in TaCOL-B5 results in amino acid substitutions leading to differential protein phosphorylation by the protein kinase TaK4. The TaCol-B5 allele is present in emmer wheat but is rare in a global collection of modern wheat cultivars.

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