Transcriptome and Metabolome Analyses Reveal That Jasmonic Acids May Facilitate the Infection of Cucumber Green Mottle Mosaic Virus in Bottle Gourd

• Published in: International journal of molecular sciences Vol. 24; no. 23; p. 16566
• Main Authors: Li, Zhenggang, Tang, Yafei, Lan, Guobing, Yu, Lin, Ding, Shanwen, She, Xiaoman, He, Zifu
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01.12.2023
• Subjects: Acids; Analysis; Antiviral agents; Biosynthesis; bottle gourd; Cellular signal transduction; Citrullus - genetics; Commerce; cucumber green mottle mosaic virus; Cucurbita - genetics; Flowers & plants; Fruits; Gene expression; Genes; Genomes; Health aspects; Hormones; Infection; Infections; International trade; Internationality; jasmonic acids; Leaves; Metabolism; Metabolites; Metabolome; Pathogens; Physiological aspects; Plant Diseases - genetics; Plant Growth Regulators; Plant metabolites; Proteins; Signal transduction; Software; Tobacco; Tobamovirus - genetics; Transcriptome; transcriptome and metabolome; Tyrosine; Viruses; China; cucumber green mottle mosaic virus; infection; jasmonic acids; bottle gourd; transcriptome and metabolome
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms242316566

Cucumber green mottle mosaic virus (CGMMV) is a typical seed-borne tobamovirus that mainly infects cucurbit crops. Due to the rapid growth of international trade, CGMMV has spread worldwide and become a significant threat to cucurbit industry. Despite various studies focusing on the interaction between CGMMV and host plants, the molecular mechanism of CGMMV infection is still unclear. In this study, we utilized transcriptome and metabolome analyses to investigate the antiviral response of bottle gourd ( ) under CGMMV stress. The transcriptome analysis revealed that in comparison to mock-inoculated bottle gourd, 1929 differently expressed genes (DEGs) were identified in CGMMV-inoculated bottle gourd. Among them, 1397 genes were upregulated while 532 genes were downregulated. KEGG pathway enrichment indicated that the DEGs were mainly involved in pathways including the metabolic pathway, the biosynthesis of secondary metabolites, plant hormone signal transduction, plant-pathogen interaction, and starch and sucrose metabolism. The metabolome result showed that there were 76 differentially accumulated metabolites (DAMs), of which 69 metabolites were up-accumulated, and 7 metabolites were down-accumulated. These DAMs were clustered into several pathways, including biosynthesis of secondary metabolites, tyrosine metabolism, flavonoid biosynthesis, carbon metabolism, and plant hormone signal transduction. Combining the transcriptome and metabolome results, the genes and metabolites involved in the jasmonic acid and its derivatives (JAs) synthesis pathway were significantly induced upon CGMMV infection. The silencing of the ( ) gene, which is the key gene involved in JAs synthesis, reduced CGMMV accumulation. These findings suggest that JAs may facilitate CGMMV infection in bottle gourd.