Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (7): 1591-1603.DOI: 10.3969/j.issn.1004-1524.20220943

• Horticultural Science • Previous Articles     Next Articles

Genome-wide identification and bioinformatics analysis of SWEET gene family in melon

SHOU Weisong(), HE Yanjun, SHEN Jia, XU Xinyang   

  1. Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2022-06-23 Online:2023-07-25 Published:2023-08-17

Abstract:

Sugars will eventually be exported transporter (SWEET) is a novel family of sugar transporters that are involved in plant growth and development, plant-pathogen interaction, and stress tolerance. Due to the lack of reports of SWEET family genes in melon, this study carried out the genome-wide identification and bioinformatics analysis of CmSWEET. A total of 17 melon CmSWEET genes were identified by homology search. These genes that distributed on 8 chromosomes all have a typical MtN3/saliva domain. Phylogenetic analysis classified the SWEET proteins of Arabidopsis, cucumber and melon into four evolutionary clades, of which subfamily Ⅲ is unique to melon and cucumber. The cis-acting elements in the gene promoter region showed that CmSWEET contains many regulatory elements related to plant hormones and stress, suggesting that CmSWEET plays an important role in regulating growth and environmental adaptation in melon. Tissue-specific analysis showed that most of the CmSWEET genes were highly expressed in female and male flowers and roots, and some CmSWEET genes were highly expressed during fruit development. Furthermore, RNA-Seq results suggested that CmSWEET genes might be involved in resistance to Fusarium oxysporum and powdery mildew infection. This study lays a solid foundation for future research into their molecular function of CmSWEET in melon developmental processes and responses to biotic and abiotic stresses.

Key words: melon, sugars will eventually be exported transporter, genome-wide identification, phylogenetic analysis

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