GC-MS/LC-MS and transcriptome analyses revealed the metabolisms of fatty acid and flavonoid in olive fruits (Olea europaea L.)

Olive (Olea europaea L.) is an economical fruit tree for the usage of oil extraction and table olives. It favored by consumers because abundant unsaturated fatty acids flavonoids, but little known about genetic mechanisms. This study identifies traits three olive cultivars ‘Arbequina’, ‘Frantoio selection’ ‘Nikitskii ?’, first planted in conditions acid soil rainy summer further elucidates flavonoid biosynthesis mechanism multi-omics analysis. ‘Arbequina’ had medium flesh/pit ratios (3.94, 3.53) contents (15.95%, 12.95%) were suitable extraction. ?’ a big ratio (6.25) content (13.13%) could be used both olives purpose. Totally, 37 35 compounds detected gas chromatography-mass spectrometry liquid technologies with average Pearson correlation indexes 0.985 0.971 among different cultivars, respectively. Transcriptome analysis identified 14,684 differentially expressed genes 1008 common differential genes. Furthermore, enrichment showed 15 8 pathways involved metabolism 44 32 prior transcripts tested, Overall, displayed larger difference they high acids/fatty oleic acid/fatty acids, While presented advantage expressions related The provides excellent materials candidate genetically improving quality oil.