Genome-wide analysis of the NF-Y gene family and their roles in relation to fruit development in Tartary buckwheat (Fagopyrum tataricum)
2021
Nuclear factor Y (NF-Y) is a heterotrimeric transcription factor playing crucial roles in various biological process in plant. However, thorough research on NF-Y gene family of Tartary buckwheat (Fagopyrum tataricum) is little. In this study, 38 FtNF-Y genes (12 FtNF-YAs, 17 FtNF-YBs, and 9 FtNF-YCs) were identified and renamed on the basis of their subfamily and chromosomal location. Their gene structure, genomic mapping, motif composition, conserved domain, phylogenetic relationships, cis-acting elements and gene expression were investigated. Illustration of gene structures and conserved domains of FtNF-Ys revealed their functional conservation and specificity. Construction of phylogenetic trees of NF-Ys in Tartary buckwheat, Arabidopsis, tomato, rice and banana, allowed us to predict functional similarities among NF-Ys from different species. Gene expression analysis displayed that twenty-four FtNF-Ys were expressed in all the tissues and the transcript levels of them were different, suggesting their function varieties. Moreover, expression profiles of twenty FtNF-Ys along five different fruit development stages acquired by real-time quantitative PCR (RT-qPCR) demonstrated distinct abundance diversity at different stages, providing some clues of potential fruit development regulators. Our study could provide helpful reference information for further function characterization of FtNF-Ys and for the fruit quality enhancement of Tartary buckwheat.
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