Genome-Wide Identification and Expression Analysis of the SWEET Gene Family in Capsicum annuum L

Sugars will eventually be exported transporters (SWEETs) are a novel class of sugar transport proteins that play a crucial role in plant growth, development, and response to stress. However, there is a lack of systematic research on SWEETs in L. In this study, 33 genes were identified through bioinf...

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Published in:	International journal of molecular sciences 2023-12, Vol.24 (24), p.17408
Main Authors:	Han, Xiaowen, Han, Shuo, Zhu, Yongxing, Liu, Yiqing, Gao, Shenghua, Yin, Junliang, Wang, Fei, Yao, Minghua
Format:	Article
Language:	eng
Subjects:	Abiotic stress Bioinformatics Capsicum - metabolism Chromosomes Gene Expression Regulation, Plant Genes Genes, Plant Genome, Plant Genomes Ka/Ks Localization microRNAs Multigene Family Pathogens Phylogenetics Phylogeny Plant Proteins - genetics Plant Proteins - metabolism Plant resistance protein characterization Proteins subcellular localization
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Summary:	Sugars will eventually be exported transporters (SWEETs) are a novel class of sugar transport proteins that play a crucial role in plant growth, development, and response to stress. However, there is a lack of systematic research on SWEETs in L. In this study, 33 genes were identified through bioinformatics analysis. The Ka/Ks analysis indicated that genes are highly conserved not only among peppers but also among species and have experienced strong purifying selection during evolution. The -elements analysis showed that the light-responsive element, abscisic-acid-responsive element, jasmonic-acid-responsive element, and anaerobic-induction-responsive element are widely distributed in the promoter regions of . The expression pattern analysis revealed that exhibit tissue specificity and are widely involved in pepper growth, development, and stress responses. The post-transcription regulation analysis revealed that 20 pepper miRNAs target and regulate 16 through cleavage and translation inhibition mechanisms. The pathogen inoculation assay showed that and function as susceptibility genes, as the overexpression of these genes promotes the colonization of pathogens, whereas functions as a resistance gene. In conclusion, through systematic identification and characteristic analysis, a comprehensive understanding of CaSWEET was obtained, which lays the foundation for further studies on the biological functions of genes.
ISSN:	1422-0067 1661-6596 1422-0067