Postharvest benzothiazole treatment enhances healing in mechanically damaged sweet potato by activating the phenylpropanoid metabolism

Abstract

BACKGROUNDSweet potato often suffers mechanical damage during harvest, handling, and transportation. Infections, water loss, and quality changes of sweet potato caused by mechanical damage pose great financial losses. Wound healing is an effective method to alleviate such problems. In this study, the effects of postharvest treatment with benzothiazole (BTH) on wound healing of sweet potato was investigated.RESULTSPostharvest BTH treatment of sweet potatoes promoted lignin accumulation in wounded tissues, and 100 mg L−1 BTH exhibited better effects than 50 mg L−1 or 150 mg L−1 BTH. The biosynthesis of lignin in wounded tissues significantly decreased the weight loss of sweet potatoes. An increase in respiration intensity after BTH treatment was observed. The total phenolic and flavonoid contents and the activity of phenylalanine ammonia‐lyase, peroxidase, and polyphenol oxidase were increased in BTH‐treated sweet potatoes. This suggests that BTH increases phenylpropanoid metabolism.CONCLUSIONPostharvest 100 mg L−1 BTH treatment could promote wound healing in mechanically damaged sweet potatoes. The activation of the phenylpropanoid metabolism might be the mechanism of action of BTH in wound healing. © 2020 Society of Chemical Industry

Effects of aphid‐induced semiochemicals from cover plants on Harmonia axyridis (Coleoptera: Coccinellidae)

“…The third of these compounds, benzothiazole, is closely related to plant resistance, which may explain the significant increase in its release after the plant infestation of aphids, and has an important application in agricultural production. Benzothiazole treatment can enhance healing in mechanically damaged sweet potatoes by activating phenylpropanoid metabolism 56 . Benzothiazole can induce apoptosis and suppress stress responses and metabolic detoxification to inhibit the growth of Phytophthora capsici (Leonian) (Peronosporales: Peronosporaceae) 57 .…”

“…Benzothiazole treatment can enhance healing in mechanically damaged sweet potatoes by activating phenylpropanoid metabolism. 56 Benzothiazole can induce apoptosis and suppress stress responses and metabolic detoxification to inhibit the growth of Phytophthora capsici (Leonian) (Peronosporales: Peronosporaceae). 57 Also, benzothiazole was identified to have a great wileyonlinelibrary.com/journal/ps insecticidal activity and repellency against red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae).…”

Chitosan Treatment Promotes Wound Healing of Apple by Eliciting Phenylpropanoid Pathway and Enzymatic Browning of Wounds

“…Phenylpropanoid metabolism aids wound healing by providing substrates for the synthesis of phenolic and monolignin with antifungal effects ( Yang et al, 2020 ). PAL is a key enzyme initiating this metabolism by the deamination of L-phenylalanine to trans- cinnamic acid ( Wang et al, 2020 ). Trans- cinnamic acid formed is directly hydroxylated by C4H to p -coumaric acid, which yields caffeic acid with the aid of p -coumaroyl shikimate 3-hydroxylase, and then caffeic acid is further generated into ferulic acid under O -methyltransferases.…”

The Effect of Field Heat Reduction Methods on Fresh and Processing Qualities of Red and Russet Potato Cultivars

“…Potato (Solanum tuberosum L.) is the world's fourth most important food crop and has considerable impacts on food security and economic growth (Zheng et al, 2020). Long-term storage is necessary to ensure year-round supply for the fresh market and processing industry (Wang et al, 2020a). The outermost layer of potato tubers is the periderm, which is susceptible to mechanical damage during harvest and handling, providing a pathway for pathogens, which infect tubers with several diseases, including pink rot, Pythium leak, late blight, soft rot, silver scurf, black dot, and early blight (Lulai, 2007;Barel & Ginzberg, 2008; Wang et al, 2020a).…”

“…Long-term storage is necessary to ensure year-round supply for the fresh market and processing industry (Wang et al, 2020a). The outermost layer of potato tubers is the periderm, which is susceptible to mechanical damage during harvest and handling, providing a pathway for pathogens, which infect tubers with several diseases, including pink rot, Pythium leak, late blight, soft rot, silver scurf, black dot, and early blight (Lulai, 2007;Barel & Ginzberg, 2008; Wang et al, 2020a). Potato tubers can heal their wounds by forming a wound periderm to prevent water loss and pathogen attack (Bernards, 2002).…”