Abstract
Both environmental and genetic factors have important influences on the quality formation of jujube fruit. To elucidate the molecular mechanism of fruit quality formation with the effects of soil and meteorological factors, transcriptome and metabolome analysis was conducted on Ziziphus jujuba Mill. ‘Jingudazao’ (JG) fruits were harvested from the three areas, Hebei (HB), Shanxi (SX), and Xinjiang (XJ) at the half-red stage. Firstly, meteorological factors and soil conditions have significant effects on jujube fruit quality characteristics. In compared groups, 331, 295, and 297 differentially accumulated metabolites (DAMs) were identified, while the principal DAMs pertaining to carbohydrates, organic acids, amino acids, derivatives, etc. showed that JG_HB had fewer DAMs than JG_XJ and JG_SX. Among them, 20 differentially expressed genes (DEGs), 13 DAMs, and their derivatives participated in carbohydrates and acid metabolism. In addition, two DEGs and seven DAMs were involved in flavonoid biosynthesis. The results provide a valuable and theoretical foundation for the ecological planting and cultivation of jujube.
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