Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 68, Issue 42, Pages 11863-11874Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.0c05153
Keywords
ABA; ATP citrate lyase; carbohydrate; citrus; jasmonic acid; MEP pathway; phenylalanine ammonia-lyase; vitamin C
Funding
- National Natural Science Foundation of China [31672098]
- earmarked fund for the China Agriculture Research System [CARS-26]
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Fruit and leaf possess distinctly different metabolites. Here, metabolites and transcriptome were compared between mature leaves (ML) and juice sacs (JS) of Citrus grandis Hirado Buntan to investigate the possible reasons. Results indicated that the remarkable difference in starch, total flavonoids and carotenoids, L-ascorbate, and jasmonic acid between ML and JS was tightly related to the expression levels of their biosynthesis-related genes, while the significant difference in abscisic acid and citrate was mainly related to the gene expression level(s) of 9-cis-epoxycarotenoid dioxygenase and proton pump genes, respectively. In addition, ATP citrate lyase probably plays a key role in the levels of flavonoids between ML and JS via providing different levels of acetyl-CoA. Taken together, these results identified some key candidate genes responsible for the content of a given metabolite and will contribute to research in regulating such metabolite content in citrus fruits.
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