Identification of CDF family members in apple and their expression in response to sucrose during floral induction. Issue 1 (1st January 2020)

• Record Type: Journal Article
• Authors: Qi, Siyan; Ma, Wenchun; An, Na; Gao, Xiuhua; Du, Lisha; Zhang, Dong; Ma, Juanjuan; Zhao, Caiping; Han, Mingyu; Xing, Libo
• Is Part Of: Journal of plant interactions. Volume 15:Issue 1(2020)
• Page Start: 241
• Page End: 256
• Publication Date: 2020-01-01
• Subjects: CDF -- Malus domestica Borkh -- sucrose -- gene expression -- floral induction; Plant ecophysiology -- Periodicals; Plants -- Periodicals; Toxins -- Periodicals; 581.7
• DOI: 10.1080/17429145.2020.1760951
• Languages: English
• ISSNs: 1742-9145

Abstract

ABSTRACT: Plant-specific CDF genes encode a class of transcription factors which play crucial roles in plant flowering, especially in photoperiod-regulated flowering. But little is known about the potential functions of MdCDF s during flower induction in apple. In this study, 11 putative MdCDF s were identified and named systematically. Bioinformatic analysis revealed a functional and structural similarity among the MdCDF s. Analysis of tandem and synteny revealed several paired CDF homologs between apple and Arabidopsis . RT-qPCR revealed that MdCDF s exhibited distinct expression patterns in different apple tissues and most of them displayed high expression levels in flowers and leaves. Further expression profiles of MdCDF s were investigated in different-flowering varieties of apple and in response to sugar treatment. The results indicated that MdCDF s were responsive to floral induction. Meanwhile, the expressions of all MdCDF s were inhibited in buds during different floral induction stages after sugar treatment. The expressions of flowering-related and photoperiod pathway-related genes showed differences and may indicate that most of the MdCDF s may function as a light response flowering inhibitor and could be repressed by the sugar-mediated floral induction. Collectively, the comprehensive analysis of MdCDF s provides valuable information on their expression during floral induction that will serve as a foundation for further studies.