Molecular mechanism of flowering time regulate by SOC1
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Abstract
SUPPRESOR OF OVEREXPRESSION OF CO 1 (SOC1) encodes the MADS-box transcription factor, which has important functions of inducing flowering in plants, preventing premature maturation of floral meristems, and regulating the development of floral organs by integrating flowering signals. SOC1 transcription factor is regulated by proteins or nucleic acids, forms a complex with other transcription factors to enter the nucleus, targets flowering genes to regulate flowering time, and has a complex flowering time regulatory network. This study mainly analyzed the structural characteristics of SOC1 and its protein, predicted the protein interaction network of SOC1, and mainly reviewed the molecular mechanism of SOC1 regulation of flowering time. Results showed that SOC1 was directly regulated by FT, CO, FLC, MAFs, SVPs, SPL, and AGL24 and indirectly regulated by DELLA, miR156, miR172, AP2, MYC3, and nutrient signals. SOC1 formed a dimer with AGL24 to upregulate LFY expression to accelerate flowering induction in plants. Results of this study provide a reference for future research on how SOC1 regulate the flowering time of other plants.
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