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Abstract

Adaptive changes in plant phenology are often considered to be a feature of the so-called ‘domestication syndrome’ that distinguishes modern crops from their wild progenitors, but little detailed evidence supports this idea. In soybean, a major legume crop, flowering time variation is well characterized within domesticated germplasm and is critical for modern production, but its importance during domestication is unclear. Here, we identify sequential contributions of two homeologous pseudo-response-regulator genes, Tof12 and Tof11, to ancient flowering time adaptation, and demonstrate that they act via LHY homologs to promote expression of the legume-specific E1 gene and delay flowering under long photoperiods. We show that Tof12-dependent acceleration of maturity accompanied a reduction in dormancy and seed dispersal during soybean domestication, possibly predisposing the incipient crop to latitudinal expansion. Better understanding of this early phase of crop evolution will help to identify functional variation lost during domestication and exploit its potential for future crop improvement.

Item Type:	Article
Authors/Creators:	Lu, S and Dong, L and Fang, C and Liu, S and Kong, L and Cheng, Q and Chen, L and Su, T and Nan, H and Zhang, D and Zhang, L and Wang, Z and Yang, Y and Yu, D and Liu, X and Yang, Q and Lin, X and Tang, Y and Zhao, X and Yang, X and Tian, C and Xie, Q and Li, X and Yuan, X and Tian, Z and Liu, B and Weller, JL and Kong, F
Keywords:	flowering, genetics, soybean, plant phenology, adaptive changes
Journal or Publication Title:	Nature Genetics
Publisher:	Nature Publishing Group
ISSN:	1061-4036
DOI / ID Number:	10.1038/s41588-020-0604-7
Copyright Information:	© The Author(s), under exclusive licence to Springer Nature America, Inc. 2020
Related URLs:	Google Scholar: Weller, JL UTAS Profile: Weller, JL
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