Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 24, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/ijms24087199
Keywords
pineapple; translucency; flavonoid; transcriptome; metabolome
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In this study, seven pineapple varieties were analyzed to investigate the relationship between water content and pineapple translucency. Metabolomic and transcriptome analyses revealed differential expression of various metabolites and pathways associated with pineapple translucency formation. This study provides critical molecular data for a deeper understanding of pineapple translucency and future research on this important crop.
A physiological disease of the pineapple fruit called pineapple translucency causes the pulp to become water-soaked, which affects the fruit's taste, flavor, shelf life, and integrity. In the present study, we analyzed seven pineapple varieties, of which three were watery and four were non-watery. There were no apparent macronutritional (K, P, or N) differences in their pulp, but the non-watery pineapple varieties had higher dry matter and soluble sugar content. The metabolomic analysis found 641 metabolites and revealed differential expression of alkaloids, phenolic acids, nucleotide derivatives, lipids, and other metabolites among the seven species. Transcriptome analysis and further KEGG enrichment showed downregulation of 'flavonoid biosynthesis' pathways, differential expression of metabolic pathways, secondary metabolites biosynthesis, plant-pathogen interaction, and plant hormone signal transduction. We believe this study will provide critical molecular data supporting a deeper understanding of pineapple translucency formation and greatly benefit future research on this commercially important crop.
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