Biotechnology Bulletin ›› 2025, Vol. 41 ›› Issue (5): 175-185.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0997

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Genome-wide Identification and Expression Analysis of SDR Gene Family in Mentha suaveolens ‘Variegata’

WU Ya1,2(), YAO Run1, YANG Han-ting1,2, LIU Wei1,2, YANG Shuai2,3, SONG Chi2(), CHEN Shi-lin2()   

  1. 1.School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137
    2.Institute of Herbgenomics, Chengdu University of Traditional Chinese Medicine, Chengdu 611137
    3.School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025
  • Received:2024-10-12 Online:2025-05-26 Published:2025-06-05
  • Contact: SONG Chi, CHEN Shi-lin E-mail:wuyaya1880@126.com;songchi@cdutcm.edu.cn;slchen@cdutcm.edu.cn

Abstract:

Objective Short-chain dehydrogenases/reductases (SDRs), belong to the NADPH-dependent oxidoreductase superfamily, represent an important gene family in plant metabolism. This study conducted a comprehensive identification and analysis of the SDR gene family in Mentha suaveolens 'Variegata', providing a theoretical basis for understanding the functions of SDR genes and their roles in menthol biosynthesis. Method Based on the genome data of M. suaveolens haplotype, bioinformatics methods were employed to identify the SDR gene family, and to analyze their physicochemical properties, conserved motifs, and chromosomal localization. Co-expression analysis was performed between SDR genes and important monoterpene compounds on the menthol synthesis pathway based on transcriptome and metabolome data. Additionally, RT-qPCR was performed to analyze expression patterns of MsSDR genes strongly correlated with monoterpene compounds. Result Total 142 MsSDR genes were identified in M. suaveolens, unevenly distributed across 12 chromosomes, encoding 232 to 765 amino acids. Phylogenetic analysis categorized MsSDR proteins into five types: classical (C), extended (E), non-classical (A), divergent (D)and unknown (U). Additionally, promoter sequence analysis of MsSDR identified the cis-acting elements associated with photo-response and stress responses. Gene expression profiles indicated that more than half of the MsSDRs were expressed in at least one tissue. Co-expression analysis revealed that 32 SDR genes presented a strong correlation with monoterpene compounds. Conclusion A comprehensive analysis of the M. suaveolensSDR gene family found that 142 MsSDRs genes were involved in multiple stages of its growth and development. Multiple MsSDRs were associated with monoterpene compounds in the menthol biosynthesis pathway, suggesting their potential involvement in menthol biosynthesis.

Key words: Mentha suaveolens ‘Variegata’, SDR genes family, functional analysis, expression profile, menthol biosynthesis