DcMADS3, a MADS-Box Transcription Factor, Highly Expressed at the Middle Flower Bud Stage and Involved in Petalization Development in Carrot
文献类型： 外文期刊
作者： Tan, Shan-Shan 1 ; Liu, Shan-Shan 1 ; Ma, Jing 2 ; Liang, Yi 3 ; Duan, Ao-Qi 1 ; Deng, Yuan-Jie 1 ; Wang, Ya-Hui 1 ; Liu, Hui 1 ; Xu, Zhi-Sheng 1 ; Xiong, Ai-Sheng 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement &, 1 Weigang, Nanjing 210095, Peoples R China
2.Qingdao Agr Univ, Coll Hort, Qingdao 266109, Peoples R China
3.Beijing Acad Agr & Forestry Sci, Beijing Vegetable Res Ctr, Beijing 100097, Peoples R China
关键词： Carrot; Floral organ; MADS-box transcription factor; Overexpression; Interaction analysis
期刊名称：MOLECULAR BIOTECHNOLOGY （ 影响因子：2.5； 五年影响因子：2.7 ）
ISSN： 1073-6085
年卷期： 2025 年
页码：
收录情况： SCI
摘要： Carrot (Daucus carota), an Apiaceae family crop, possesses the typical compound umbellate inflorescence with small flowers. The mechanism of carrot floral development is still unknown. APETALA3 (AP3) is a MADS-box transcription factor that primarily participates in stamen and petal development. In this study, DcMADS3 belonging to the APETALA3 group was cloned, which can form a heterodimer with DcMADS2 belonging PI (PISTILLATA) group. Expression analysis revealed DcMADS3 was higher in 'Kurodagosun' (normal flower, KRD) than 'Deep Purple' ('petaloid' CMS phenotype, DPP) at the middle flower bud stage. Its expression was greater in DPP petals (normal petal and petaloid petal) than in KRD petals, suggesting its potential role in regulating petalization development in carrot. Transgenic Arabidopsis overexpressing DcMADS3 resulted in altered petal size, increased petal number, and altered flower symmetry. Furthermore, yeast one-hybrid (Y1H) library screening identified DcXTH-like (DCAR_009699) as a potential factor binding to the DcMADS3 promoter. These results provided a theoretical foundation for further investigation of carrot floral organ development mechanism.
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