Effects of preharvest applications of methyl jasmonate and chitosan on postharvest decay, quality and chemical attributes of Fragaria chiloensis fruit

Saavedra, Gabriela M.; Figueroa, Nicolás E.; Poblete, Leticia; Cherian, Sam; Figueroa, Carlos R.

doi:10.1016/j.foodchem.2015.05.107

Cited by 108 publications

(62 citation statements)

References 26 publications

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“…Thus, 0.5 mmol L –1 MeJA was the most effective concentration with respect to increasing total and individual phenolic concentration in ‘Royal Rosa’ and ‘Black Splendor’ plum, in addition to 1.0 mmol L –1 in ‘Fortune’ plums, 10 mmol L –1 in wine grapes cultivars, 0.1 mmol L –1 in table grape cultivars, 0.2 mmol L –1 in black currant and 0.1 mmol L –1 in raspberries . Furthermore, it has been reported that the increased phenolic concentration as a result pre‐harvest MeJA treatment was maintained during storage in plum, mango and strawberry fruits. These effects were attributed to a stimulation of PAL activity, which is the key enzyme in the phenolic biosynthesis pathway.…”

Section: Discussionmentioning

confidence: 81%

Pre‐harvest methyl jasmonate treatments increase antioxidant systems in lemon fruit without affecting yield or other fruit quality parameters

et al. 2019

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BACKGROUND Jasmonic acid (JA) and its volatile derivative methyl jasmonate (MeJA) are hormones involved in the regulation of many processes in plants and act (when applied as a post‐ or pre‐harvest treatment) to increase fruit bioactive compounds with antioxidant potential. However, there is no literature available regarding the effect of pre‐harvest MeJA treatment on lemon fruit antioxidant systems, which was the aim of the present study. RESULTS MeJA treatment (0.1, 0.5 and 1.0 mmol L–1) increased antioxidant compounds, such as phenolics, in the juice and flavedo of ‘Fino’ and ‘Verna’ lemons at harvest, with the most effective concentration being 0.1 mmol L–1 in both cultivars. In addition, catalase (CAT), peroxidase (POD) and ascorbate peroxidase (APX) activities were also increased by MeJA treatment, with the highest increases being also found with 0.1 mmol L–1. The increases in APX and CAT were maintained from one treatment to another during fruit development on the tree, whereas the increase on POD disappeared after 8–10 days of each treatment. For both antioxidant systems, the highest increases were found in lemon harvested at the commercial ripening stage. By contrast, crop yield, fruit ripening process and quality parameters were generally not affected by MeJA treatment. CONCLUSION Preharvest MeJA treatment could be a useful tool for increasing antioxidant potential and the health beneficial effects of lemon fruit consumption, given the relationship between these properties and phenolic content. Moreover, the increased concentration of phenolics and the activity of antioxidant enzymes in the flavedo of MeJA treated fruit could increase lemon tolerance to chilling injury and decay during postharvest storage. © 2019 Society of Chemical Industry

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Section: Discussionmentioning

confidence: 81%

Pre‐harvest methyl jasmonate treatments increase antioxidant systems in lemon fruit without affecting yield or other fruit quality parameters

et al. 2019

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“…Many reports have demonstrated that the concentration of triterpene glycosides can be increased by the application of exogenous MeJA, and this is always accompanied by the upregulation of expression of corresponding genes [40,41]. Studies of the effect of MeJA on fruit mainly concentrated on post-harvest fruit quality [42][43][44]. In this experiment, we anticipated that treating S. grosvenorii fruit with MeJA in the field during its early growing stages would also regulate the synthesis of important intermediates which could contribute to a greater yield of final products.…”

Section: Discussionmentioning

confidence: 99%

Methyl jasmonate-induced accumulation of metabolites and transcriptional responses involved in triterpene biosynthesis in Siraitia grosvenorii fruit at different growing stages

et al. 2016

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The cucurbitane-type triterpenoid glycosides, mogrosides, are the main active components of Siraitia grosvenorii fruit. Squalene and cucurbitadienol are among the intermediates of the biosynthetic pathway for the formation of cucurbitanetype triterpenoid backbones of mogrosides. It is recognized that the exogenous application of methyl jasmonate (MeJA) increases the accumulation of secondary metabolites in various plant species. Here, the effect of MeJA (50, 200, and 500 μM) on the accumulation of squalene and cucurbitadienol in the fruits of S. grosvenorii at 10, 20, and 30 days after flowering (DAF) was tested for the first time. Since mogroside II E is the main cucurbitane-type triterpenoid present at this time, its concentration was also determined. The results show that MeJA can indeed promote squalene and cucurbitadienol accumulation, the application of 500 μM MeJA at 30 DAF being optimal. The concentration of squalene and cucurbitadienol increased up to 0.43 and 4.71 μg/g dry weight (DW), respectively, both of which were 1.2-fold greater than that of the control. The content of mogroside II E increased by 15% over the untreated group. We subsequently analyzed the expression of key genes involved in the mogroside biosynthetic pathway, including the 3-hydroxy-3-methylglutaryl-coenzyme A reductase gene (SgHMGR), squalene synthetase gene (SgSQS), cucurbitadienol synthase gene (SgCS), and cytochrome P450 (SgCYP450) with quantitative real-time PCR. The results showed that transcriptional levels of these genes were upregulated following the treatment described above. Additionally, their responses in the presence of MeJA was related to the concentration and timing of MeJA treatment.

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“…High pesticide residues are reported in the fruits, which are harmful for consumer’s health. Therefore, nowadays, consumers demand more natural, environmentally friendly fruit production, with high quality and without any chemical preservatives and pesticide residues [5]. To decrease the pesticide residues and to enhance the nutritional quality of fruits and vegetables, an effective eco-friendly compound is essential.…”

Section: Introductionmentioning

confidence: 99%

Pre-Harvest Treatment of Chitosan Oligosaccharides Improved Strawberry Fruit Quality

Bose

Wang

et al. 2018

IJMS

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Chitosan oligosaccharide (COS), derived through hydrolysis of chitosan, has been proved to be an effective plant immunity elicitor, eco-friendly, and easily soluble in water, and influenced several secondary metabolites content to improve fruit qualities. COS are widely used in agriculture to improve the defense response in plants. The purpose of this study was to investigate the pre-harvest treatment effect of COS on the quality of strawberry (Fragaria × ananassa cv. qingxiang). COS was dissolved in distilled water at a concentration of 50 mg·L−1 and sprayed at four different growth stages of strawberry plants, namely seedling stage, before flowering, fruit coloring (the stage of fruit from white to red) and full bloom. Uniform size, shape, color, without any visible damage, and disease-free fruits were harvested for determining the quality. The results showed that the fruit firmness, viscosity, lignin, sugars, protein, total soluble solid, and titratable acidity content increased in COS-treated fruits compared to control. In addition, COS pre-harvest treatment had a positive effect on anthocyanin, total phenol, flavonoid, vitamin C content and DPPH(2,2-diphenyl-1-picrylhydrazyl) scavenging activity of strawberry. Moreover, COS also increased the cell wall composition and regulated gene expression of some important enzymes involved in ethylene compound biosynthesis and cell wall degradation. The finding of this study suggests that pre-harvest application of COS is very useful for improving quality and antioxidant capacity of strawberry.

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Effects of preharvest applications of methyl jasmonate and chitosan on postharvest decay, quality and chemical attributes of Fragaria chiloensis fruit

Cited by 108 publications

References 26 publications

Pre‐harvest methyl jasmonate treatments increase antioxidant systems in lemon fruit without affecting yield or other fruit quality parameters

Pre‐harvest methyl jasmonate treatments increase antioxidant systems in lemon fruit without affecting yield or other fruit quality parameters

Methyl jasmonate-induced accumulation of metabolites and transcriptional responses involved in triterpene biosynthesis in Siraitia grosvenorii fruit at different growing stages

Pre-Harvest Treatment of Chitosan Oligosaccharides Improved Strawberry Fruit Quality

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