Soybean hypocotyl elongation is regulated by a MYB33-SWEET11/21-GA2ox8c module involving long-distance sucrose transport
文献类型： 外文期刊
作者： Su, Tong 1 ; Liu, Huan 1 ; Wu, Yichun 1 ; Wang, Jianhao 2 ; He, Fanglei 1 ; Li, Haiyang 1 ; Li, Shichen 1 ; Wang, Lingshuang 1 ; Li, Lanxin 1 ; Cao, Jie 1 ; Lu, Qiulian 1 ; Zhao, Xiaohui 1 ; Xiang, Hongtao 4 ; Lin, Chun 3 ; Lu, Sijia 1 ; Liu, Baohui 1 ; Kong, Fanjiang 1 ; Fang, Chao 1 ;
作者机构： 1.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Guangdong Key Lab Plant Adaptat & Mol Design, Sch Life Sci,Guangzhou Key Lab Crop Gene Editing, Guangzhou, Peoples R China
2.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangdong Key Lab New Technol Res Vegetables, Guangzhou, Peoples R China
3.Yunnan Agr Univ, Inst Improvement & Utilizat Characterist Resource, Coll Agr & Biotechnol, Kunming, Peoples R China
4.Heilongjiang Acad Agr Sci, Harbin, Peoples R China
5.Heilongjiang Acad Agr Machinery Sci, Suihua Branch, Suihua, Peoples R China
关键词： SWEET11/21; MYB33; sucrose; hypocotyl; soybean
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：13.8； 五年影响因子：13.2 ）
ISSN： 1467-7644
年卷期： 2024 年
页码：
收录情况： SCI
摘要： The length of hypocotyl affects the height of soybean and lodging resistance, thus determining the final grain yield. However, research on soybean hypocotyl length is scarce, and the regulatory mechanisms are not fully understood. Here, we identified a module controlling the transport of sucrose, where sucrose acts as a messenger moved from cotyledon to hypocotyl, regulating hypocotyl elongation. This module comprises four key genes, namely MYB33, SWEET11, SWEET21 and GA2ox8c in soybean. In cotyledon, MYB33 is responsive to sucrose and promotes the expression of SWEET11 and SWEET21, thereby facilitating sucrose transport from the cotyledon to the hypocotyl. Subsequently, sucrose transported from the cotyledon up-regulates the expression of GA2ox8c in the hypocotyl, which ultimately affects the length of the hypocotyl. During the domestication and improvement of soybean, an allele of MYB33 with enhanced abilities to promote SWEET11 and SWEET21 has gradually become enriched in landraces and cultivated varieties, SWEET11 and SWEET21 exhibit high conservation and have undergone a strong purified selection and GA2ox8c is under a strong artificial selection. Our findings identify a new molecular pathway in controlling soybean hypocotyl elongation and provide new insights into the molecular mechanism of sugar transport in soybean.
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