Acetylsalicylic acid (ASA) induced fusarium rot resistance and suppressed neosolaniol production by elevation of ROS metabolism in muskmelon fruit

Antofine Triggers the Resistance Against Penicillium italicum in Ponkan Fruit by Driving AsA-GSH Cycle and ROS-Scavenging System

“…A concomitant increase in of O 2 •– production rate in the control of P. italicum- infected Ponkan fruit suggested the occurrence of oxidative damage arising from excessive ROS accumulation, and it was considerably delayed by ATF treatment ( Figure 1 ), which is essential to reserve the defense barrier of Ponkan fruit. This result was closely consistent with the result reported by Xue et al (2020) , who investigated and found that exogenous acetylsalicylic acid (ASA) treatment reduced Fusarium sulphureum -induced oxidative damage by suppressing O 2 •– production and inducing fusarium rot resistance in “Manao” muskmelon ( Cucumis melo L.) fruit. Nevertheless, accumulating studies have well demonstrated that PAAs could increase the activity of the antioxidant system scavenging excessive ROS in fungus-infected fruits ( Segal and Wilson, 2018 ; Duan et al, 2021 ); these ROS-scavenging mechanisms involve the increase of enzymatic antioxidant activities and the induction of non-enzymatic antioxidant amounts ( Xue et al, 2020 ; Zhang et al, 2020 ; Chen et al, 2022 ).…”

“…Therefore, the imbalance of cell integrity may rapidly aggravate the development of disease decay in fungal-infected fruits. The huge loss of peel firmness is the ubiquitous evidence of lesion in many horticultural fruits response to biotic stress or fungal infection ( Ma et al, 2019 ; Chen et al, 2022 ), which is largely associated with the peroxidation of membrane lipid and the polysaccharide components disassembly or degradation from its cell wall ( Sadeghi et al, 2020 ; Xue et al, 2020 ). Electrolyte leakage, O 2 •– production rate, and MDA (the final product in membrane peroxidation) content have been widely considered as key important indicators for assaying the degree of cell oxidative damage in fruits in response to postharvest fungal infection ( Marschall and Tudzynski, 2016 ; Abdelhai et al, 2019 ).…”

“…Nevertheless, over-produced ROS at infection sites can induce oxidative stress, leading to a range of physiological disorders, such as cell permeability breakdown, membrane lipid peroxidation, energy depletion, protein denaturation, and DNA oxidization, thereby resulting in cell death ( Zhang et al, 2020 ; Chen et al, 2022 ). Postharvest disorder of cellular ROS homeostasis, accompanied by excessive superoxide anion (O 2 •– ) production and malondialdehyde (MDA) accumulation, will rapidly cause the oxidative damage of cellular membrane as well as cell wall and aggravate the fruit quality deterioration of harvested fruits like Ponkan mandarin ( Huang et al, 2021a ), orange ( Elsherbiny et al, 2021 ), pummelo ( Chen et al, 2022 ), grape ( Wang et al, 2020 ), pear ( Liu et al, 2021 ), and muskmelon ( Xue et al, 2020 ). To minimize the toxic effects of excessive ROS and reduced oxidative stress, plant cells have evolved an efficient ROS-scavenging system that includes non-enzymatic antioxidants, such as phenolics, flavonoids, ascorbic acid (AsA, also known as vitamin C), glutathione (GSH), and anthocyanins, and enzymatic antioxidants, such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and six key enzymes in AsA-GSH cycle, namely, ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), mono-DHAR (MDHAR), GSH reductase (GR), GSH peroxidase (GPX), and GSH S-transferase (GST; Hasanuzzaman et al, 2019 ; Sadeghi et al, 2020 ; Xue et al, 2020 ).…”

Effects of ozone treatment on the antioxidant capacity of postharvest strawberry

“…105 The activity and transcriptional abundance of APX and GR in cantaloupe were increased within 1 day post-sporeinoculation to activate the process of H 2 O 2 removal in the early stage of fruit treatment. 106 The relative expressions of MDHAR and DHAR were positively correlated with the accumulation of ASA in the peel and pulp of citrus fruit, respectively, which helped to increase the circulatory capacity of ASA-GSH. 107 MDHAR allele was also considered as a candidate gene for increasing the ASA content in tomato.…”

Sulfur Induces Resistance against Canker Caused by Pseudomonas syringae pv. actinidae via Phenolic Components Increase and Morphological Structure Modification in the Kiwifruit Stems

“…Under the induction of exogenous substances, the structural, physiological and biochemical resistance of plants would change to a certain extent, such as the formation of papillae, lignification, the precipitation of callose, and the accumulation of phenolic compounds and disease-related proteins, which are closely related to plant resistance [7][8][9]. Studies on induced resistance have achieved good results in soybean [10], wheat [11], and melon [12,13], among others. The resistance induction of kiwifruit is considered to be a promising alternative method for controlling bacterial canker caused by Psa.…”