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Title: Natural variation at the soybean J locus improves adaptation to the tropics and enhances yield
Author: S. J. Lu, X. H. Zhao, Y. L. Hu, S. L. Liu, H. Y. Nan, X. M. Li, C. Fang, D. Cao, X. Y. Shi, L. P. Kong, T. Su, F. G. Zhang, S. C. Li, Z. Wang, X. H. Yuan, E. R. Cober, J. L. Weller, B. H. Liu, X. L. Hou, Z. X. Tian and F. J. Kong
Corresponding Author: 刘宝辉 孔凡江
Source: Nature Genetics
Issued Date: 2017
DOI: 10.1038/ng.3819
Volume: 49, Issue:5, Pages:773-+
Abstract: Soybean is a major legume crop originating in temperate regions, and photoperiod responsiveness is a key factor in its latitudinal adaptation. Varieties from temperate regions introduced to lower latitudes mature early and have extremely low grain yields. Introduction of the long-juvenile (LJ) trait extends the vegetative phase and improves yield under short-day conditions, thereby enabling expansion of cultivation in tropical regions. Here we report the cloning and characterization of J, the major classical locus conferring the LJ trait, and identify J as the ortholog of Arabidopsis thaliana EARLY FLOWERING 3 (ELF3). J depends genetically on the legume-specific flowering repressor E1, and J protein physically associates with the E1 promoter to downregulate its transcription, relieving repression of two important FLOWERING LOCUS T (FT) genes and promoting flowering under short days. Our findings identify an important new component in flowering-time control in soybean and provide new insight into soybean adaptation to tropical regions.
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Content Type: 期刊论文
URI: http://ir.iga.ac.cn/handle/131322/7658
Appears in Collections:湿地与全球变化学科组_期刊论文

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