“…It has been demonstrated that the application of exogenous GABA can enhance the tolerance of plants against many kinds of abiotic and biotic stresses by suppressing ROS accumulation. In the present study, the content of H 2 O 2 and MDA was lower in GABA-treated fruits, suggesting that GABA could effectively relieve oxidative stress in strawberry fruits during storage, in accordance with the argument in other fruits ( Liu et al, 2023 , Liu et al, 2023 ). Fig.…”
Section: Resultssupporting
confidence: 91%
“…The experiment conducted by Al Shoffe, Nock, Zhang, and Watkins (2021) showed that pre- and post-harvest GABA application had few significant effects on apple firmness. However, the decrease of kiwifruit firmness was significantly inhibited by 10 mM GABA treatment ( Liu et al, 2023 ). Cornelian cherry fruits treated with 5 mM GABA maintained firmness which may arise from lower cell wall degrading enzymes ( Aghdam, Kakavand, Rabiei, Zaare-Nahandi, & Razavi, 2019 ).…”
“…It has been demonstrated that the application of exogenous GABA can enhance the tolerance of plants against many kinds of abiotic and biotic stresses by suppressing ROS accumulation. In the present study, the content of H 2 O 2 and MDA was lower in GABA-treated fruits, suggesting that GABA could effectively relieve oxidative stress in strawberry fruits during storage, in accordance with the argument in other fruits ( Liu et al, 2023 , Liu et al, 2023 ). Fig.…”
Section: Resultssupporting
confidence: 91%
“…The experiment conducted by Al Shoffe, Nock, Zhang, and Watkins (2021) showed that pre- and post-harvest GABA application had few significant effects on apple firmness. However, the decrease of kiwifruit firmness was significantly inhibited by 10 mM GABA treatment ( Liu et al, 2023 ). Cornelian cherry fruits treated with 5 mM GABA maintained firmness which may arise from lower cell wall degrading enzymes ( Aghdam, Kakavand, Rabiei, Zaare-Nahandi, & Razavi, 2019 ).…”
“…In addition, the GABA shunt plays important roles in reducing reactive oxygen species (ROS) and acting as a signaling molecule regulating several stress-related mechanisms [ 25 , 26 ]. More recently, beneficial effects of postharvest fruit GABA treatments on maintaining quality properties and reducing chilling injury damage have been reported in a wide range of fruit species, such as table grape [ 27 ], cornelian [ 28 ], peaches [ 29 ], mango [ 30 ], loquat [ 31 ] and kiwifruit [ 32 ], among others.…”
γ-Aminobutyric acid (GABA) plays important roles in plant development, including the maintenance of fruit quality when applied as postharvest treatment. However, little information is available about the effects of preharvest GABA treatments. Thus, GABA (10, 50 and 100 mM) was applied as foliar spray at key points of fruit development in three sweet cherry cultivars and over two years. The results show that quality parameters, such as total soluble solid content, titratable acidity and firmness were higher in the fruit from GABA-treated trees than in the controls, either at harvest or during four weeks of cold storage. In addition, the total phenolic and total and individual anthocyanin concentrations were also enhanced by GABA treatments and the fruit color was improved. The activities of the antioxidant enzymes catalase, ascorbate peroxidase and peroxidase were also enhanced by the GABA treatments. The most effective concentration was 50 mM, which led to extending the storage period of sweet cherries with high quality traits to up to four weeks, while for the controls this was two weeks. Thus, GABA treatment had a clear effect on delaying the postharvest ripening and senescence processes in sweet cherries, with an additional effect on enhancing the content of bioactive compounds, such as phenolics and anthocyanins, with antioxidant properties and health benefits.
“…In this sense, SA stimulates CI tolerance by activating antioxidant systems and increasing resistance to different pathogens [ 9 ]. Other chemical substances such as methyl salicylate, γ-aminobutyric acid (GABA), or glycine betaine were able to reduce CI in pomegranate, orange, and kiwifruit during storage [ 10 , 11 , 12 ]. Other strategies as intermittent warming, controlled atmosphere, or the application of nitric oxide have demonstrated success in controlling CI [ 13 ].…”
Spain is one of the main contributors to global pomegranate production. Pomegranate presents a challenge for preservation at suboptimal temperatures. Preserving this fruit for an extended period is challenging due to its susceptibility to chilling injury (CI). For this reason, we have examined different postharvest treatments to extend the pomegranate shelf life and their potential impact on reducing CI. For this reason, two postharvest treatments have been applied: 1-Methylcyclopropene (1000 nL L−1 1-MCP) and methyl jasmonate vapors (0.01 mM MeJA), a natural elicitor found in many plant organs that induces a wide range of physiological processes, including the activation of defense mechanisms against stress. Following the application of these treatments and subsequent fruit storage at 2 °C for 90 days, maintenance of firmness and membrane integrity was observed. Additionally, a positive synergic effect was observed in these quality traits when combining both substances (1-MCP + MeJA), especially with regard to delaying weight loss, the external color evolution, and total polyphenol accumulation. On the other hand, MeJA treatment alone or in combination with 1-MCP also increased the anthocyanin content in arils, thereby enhancing the fruit quality. In general, the best results were observed when these two different technologies were applied as a combined treatment, especially in terms of maintaining quality traits such as fruit firmness and total acidity and reducing weight loss and CI. This is the first time that these two substances have been tested together in any fruit species, and their simultaneous application in the same container represents an innovative approach that could be an interesting tool for commercial purposes.
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