The effects of Aminoethoxyvinylglycine and Methyl Jasmonate on bioactive compounds and fruit quality of ‘north wonder’ sweet cherry

Abstract

Background: AVG is an organic ethylene inhibitor. AVG treatments retarded the ripening process, increased fruit sizes and delayed loss of postharvest fruit flesh firmness by inhibiting ethylene. MeJA is a natural plant growth regulator and plays a regulatory role in various metabolic reactions. Apart from its role in fruit ripening, cell activities like anthocyanin and carotenoid synthesis and inhibitive role in aromatic material formation, chlorophyll and lycopene production. Materials and Methods:The present study was conducted to determine the effects of pre-harvest aminoethoxyvinylglycine (AVG) and methyl jasmonate (MeJA) treatments on bioactive compounds, mineral nutrients and other fruit quality characteristics of 'North Wonder' sweet cherries variety in 2011. AVG was sprayed on experimental trees at 125 mg L -1 dose in two different periods i.e. 3 weeks and 2 weeks before the anticipated harvest date. MeJA was applied 3 week before the anticipated harvest date at a dose of 2240 mg L -1 . Results: MeJA significantly increased fruit weight and geometric mean diameter. AVG significantly decreased fruit weight and flesh/stone ratio, significantly increased L*, chroma and hue angle values. Effects of both AVG and MeJA on flesh firmness were also found to be significant. While soluble solids concentration and pH values significantly decreased with AVG treatment, titrate acidity significantly increased. Both AVG and MeJA treatments significantly decreased total phenolics (TP), total antioxidant capacity (TAC) and total anthocyanin (TA). Effects of AVG on such decreases in TAC and TA were more efficient than MeJA. While the effects of both AVG and MeJA on iron content were significant, effects of only MeJA on nitrogen and phosphor contents were found to be significant. Conclusion: Growth regulators significantly decreased bioactive compounds. AVG was more effective in such decreases than MeJA.

Effect of abscisic acid and methyl jasmonate preharvest applications on fruit quality and cracking tolerance of sweet cherry

“…In addition, in peach, MeJA applications can reduce the expression of polygalacturonase genes and their associated enzyme activity (Ziosi et al, 2008), delaying cell wall softening and therefore increasing resistance to mechanical damage (Reyes-Díaz et al, 2016). We observed that preharvest applications of MeJA, independent of application time, significantly increased sweet cherry flesh firmness, as was also seen by Kucuker and Ozturk (2015). The possibility that increased firmness is associated with reduced cracking susceptibility has also been suggested by previous work on giberellins effects in sweet cherry fruit (Yildirim and Koyuncu, 2010).…”

“…These results show that the effect of this hormone on fruit weight could depend on fruit developmental stage and its variability in different cultivars. Similarly, Kucuker and Ozturk (2015) reported an increase in sweet cherry ('North Wonder') fruit weight with the application of 10 mM MeJA 3 weeks before harvest. Nevertheless, Saracoglu et al (2017), using the same dose in 'Regina', 'Sweet Heart' and '0900 Ziraat' did not show increases in fruit mass at the same stage of application.…”

“…In apple, sweet cherry and peach, elevated levels of JA have been found during the early stages of fruit development, when cell division occurs, coinciding with the highest rates of cuticular membrane biosynthesis (Ziosi et al, 2008;Alkio et al, 2012). In sweet cherry fruits, Wang et al (2015) reported that use of MeJA lowered fruit fungal infection, while Kucuker and Ozturk (2015) as well as Saracoglu et al (2017) found that preharvest MeJA application during the last stage of fruit development increased fruit firmness in different sweet cherry varieties.…”

Preharvest methyl jasmonate’s impact on postharvest chilling sensitivity, antioxidant activity, and pomegranate fruit quality

“…MeJA also has been used in several studies as a postharvest management to prolong storage period and increase fruit value. Recently, nitric oxide or sodium nitroprusside has been used as preharvest treatment in apple (Deng, Pan, Chen, Shen, & Sheng, ) and peach (Koushesh Saba & Moradi, ) and MeJA in sweet cherry (Kucuker & Ozturk, ), plum (Ozturk, Yıldız, & Kucuker, ), and apple (Ozturk, Yıldız, & Ozkan, ) trees and can affect fruits quality attributes. Although MeJA postharvest application has been well studied, but based on our knowledge there is no report on its preharvest application in pomegranate tree.…”

Preharvest treatment of growth regulators influences postharvest quality and storage life of cashew apples

“…Huang et al (2014) evaluated the combined effects of citokinin CPPU and GA3 on postharvest quality and life of bananas stored at ambient condition, and found these contributed to maintenance of high ascorbic acid and phenolic compounds levels. Whereas, a preharvest treatment with AVG in sweet cherry significantly reduced the antioxidant activity, total phenol and anthocyanin contents (Kucuker and Ozturk 2015).…”