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  • Title: Antioxidative capacity is highly associated with the storage property of tuberous roots in different sweetpotato cultivars.
    Author: Tang J, Wang SQ, Hu KD, Huang ZQ, Li YH, Han Z, Chen XY, Hu LY, Yao GF, Zhang H.
    Journal: Sci Rep; 2019 Jul 31; 9(1):11141. PubMed ID: 31366974.
    Abstract:
    The activities and gene expression of antioxidative enzymes and the ROS content were analyzed in two typical storage-tolerant cultivars (Xushu 32 and Shangshu 19) and another two storage-sensitive cultivars (Yanshu 25 and Sushu 16) to explore the association between the storage capacity of sweetpotato (Ipomoea batatas (L.) Lam) and ROS scavenging capability. The storage roots of the storage-tolerant cultivars maintained higher activities and expression levels of antioxidative enzymes, including ascorbate peroxidase (APX), peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD); lower activity and expression of lipoxygenase (LOX); and lower accumulation of ROS metabolites compared with the storage-sensitive cultivars. The antioxidative capability and ROS parameters of leaves were positively correlated with those of storage roots. Our results provide valuable insight for evaluating the storability of sweetpotato cultivars by analyzing the capabilities of the antioxidative system and the contents of ROS metabolites.
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