The GmSTF1/2–GmBBX4 negative feedback loop acts downstream of blue-light photoreceptors to regulate isoflavonoid biosynthesis in soybean
作者机构：National Center for Soybean ImprovementState Key Laboratory of Crop Genetics&Germplasm Enhancement and UtilizationCollege of AgricultureNanjing Agricultural UniversityNanjing 210095China Beijing Key Laboratory of Environmentally Friendly Management of Fruit Diseases and Pests in North ChinaInstitute of Plant and Environment ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China Institute of Crop ScienceCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310058China State Key Laboratory of Crop Gene Resources and BreedingInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China
出 版 物：《Plant Communications》 (植物通讯（英文）)
年 卷 期：2024年第5卷第2期
页 面：198-214页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境]
基 金：supported by the Natural Science Foundation of Jiangsu for Distinguished Young Scholars (BK20211525) the National Natural Science Foundation of China (32270256,31970258) the Core Technology Development for Breeding Program of Jiangsu Province (JBGS-2021-014) the Jiangsu Collaborative Innovation Center for Modern Crop Production (to D.X.) Nanjing Agricultural University (start-up funding to D.X.)
主 题：photoreceptor light signaling isoflavonoid GmSTF GmBBX4 soybean
摘 要：Isoflavonoids,secondary metabolites derived from the phenylalanine pathway,are predominantly bio-synthesized in legumes,especially soybean(Glycine max).They are not only essential for plant responses to biotic and abiotic stresses but also beneficial to human *** this study,we report that light signaling controls isoflavonoid biosynthesis in ***-light photoreceptors(GmCRY1s,GmCRY2s,GmPHOT1s,and GmPHOT2s)and the transcription factors GmSTF1 and GmSTF2 promote isoflavonoid accumulation,whereas the E3 ubiquitin ligase GmCOP1b negatively regulates isoflavonoid ***1s and GmPHOT2s stabilize GmSTF1/2,whereas GmCOP1b promotes the degradation of these two proteins in ***1/2 regulate the expression of approximately 27.9%of the genes involved in soybean isoflavonoid biosynthesis,including GmPAL2.1,GmPAL2.3,and *** also repress the expression of GmBBX4,a negative regulator of isoflavonoid biosynthesis in *** addition,GmBBX4 physically interacts with GmSTF1 and GmSTF2 to inhibit their transcriptional activation activity toward target genes related to isoflavonoid ***,GmSTF1/2 and GmBBX4 form a negative feedback loop that acts downstream of photoreceptors in the regulation of isoflavonoid *** study provides novel insights into the control of isoflavonoid biosynthesis by light signaling in soybean and will contribute to the breeding of soybean cultivars with high isoflavonoid content through genetic and metabolic engineering.
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