Improving bread wheat yield through modulating an unselected AP2/ERF gene

文献类型： 外文期刊

第一作者： Wang, Yuange

作者： Wang, Yuange;Du, Fei;Wang, Jian;Tian, Caihuan;Jiao, Yuling;Wang, Ke;Ye, Xingguo;Qi, Xiaoquan;Qi, Xiaoquan;Lu, Fei;Jiao, Yuling;Lu, Fei;Liu, Xigang;Jiao, Yuling;Jiao, Yuling

作者机构：

期刊名称：NATURE PLANTS （ 影响因子：17.352； 五年影响因子：19.328 ）

ISSN： 2055-026X

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收录情况： SCI

摘要： Using Brachypodium distachyon as a wheat proxy, Wang et al. identified DUO-B1, an AP2/ERF transcription factor, regulating spike type in wheat. duo-B1 leads to increased yield under field conditions without affecting other major agronomic traits. Crop breeding heavily relies on natural genetic variation. However, additional new variations are desired to meet the increasing human demand. Inflorescence architecture determines grain number per spike, a major determinant of bread wheat (Triticum aestivum L.) yield. Here, using Brachypodium distachyon as a wheat proxy, we identified DUO-B1, encoding an APETALA2/ethylene response factor (AP2/ERF) transcription factor, regulating spike inflorescence architecture in bread wheat. Mutations of DUO-B1 lead to mild supernumerary spikelets, increased grain number per spike and, importantly, increased yield under field conditions without affecting other major agronomic traits. DUO-B1 suppresses cell division and promotes the expression of BHt/WFZP, whose mutations could lead to branched 'miracle-wheat'. Pan-genome analysis indicated that DUO-B1 has not been utilized in breeding, and holds promise to increase wheat yield further.

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