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Genome-Wide Investigation of Major Enzyme-Encoding Genes in the Flavonoid Metabolic Pathway in Tartary Buckwheat (Fagopyrum tataricum)

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Abstract

Key enzymes play a vital role in plant growth and development. However, the evolutionary relationships between genes encoding key enzymes in the metabolic pathway of Tartary buckwheat flavonoids are poorly understood. Based on the published Tartary buckwheat genome sequence and related Tartary buckwheat transcriptome data, 48 key enzyme-encoding genes involved in flavonoid metabolism were screened from the Tartary buckwheat genome in this study; the chromosome localization, gene structure and promoter elements of these enzyme-encoding gene were also investigated. Gene structure analysis revealed relatively conserved 5′ exon sequences among the 48 genes, indicating that the structural diversity of key enzyme-encoding genes is low in Tartary buckwheat. Through promoter analysis, these key enzyme-encoding genes were found to contain a large number of light-response elements and hormone-response elements. In addition, some genes could bind MYB transcription factors, participating in the regulation of flavonoid biosynthesis. The transcription level of the 48 key enzyme-encoding gene varied greatly among tissues. In this study, we identified 48 key enzyme-encoding genes involved in flavonoid metabolic pathways, and elucidated the structure, evolution and tissue-specific expression patterns of these genes. These results lay a foundation for further understanding the functional characteristics and evolutionary relationships of key enzyme-encoding genes involved in the flavonoid metabolic pathway in Tartary buckwheat.

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Acknowledgements

This research was supported by the National Natural Science Foundation of China (31871698).

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Correspondence to Qi Wu.

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The authors declare that they have no conflicts of interest.

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Handling editor: John Bracht.

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Yao, Y., Sun, L., Wu, W. et al. Genome-Wide Investigation of Major Enzyme-Encoding Genes in the Flavonoid Metabolic Pathway in Tartary Buckwheat (Fagopyrum tataricum). J Mol Evol 89, 269–286 (2021). https://doi.org/10.1007/s00239-021-10004-6

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  • DOI: https://doi.org/10.1007/s00239-021-10004-6

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