Occurrence of physiological browning disorders in stored ‘Braeburn’ apples as influenced by orchard and weather conditions

McCormick, Roy; Biegert, Konni; Streif, J.

doi:10.1016/j.postharvbio.2021.111534

Cited by 19 publications

(2 citation statements)

References 27 publications

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“…Different Activities of Pectin-degrading Enzymes Affecting the Growth of Asian Pears different ways (McCormick et al, 2021). For instance, the rate of fruit growth can be regulated by very high day/night summer temperatures or low temperatures in the early growth stage (Sugiura et al, 1991;Adams et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Different Activities of Pectin-degrading Enzymes Affecting the Growth of Asian Pears

Baek,

Park,

Lee

et al. 2023

HST

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Fruit size is determined by the number and size of cells resulting from cell division and expansion, which are correlated with changes in the cell wall content. The pivotal roles of pectin-methylesterase (PME) and polygalacturonase (PG) have been well documented with regard to fruit ripening. Therefore, this study analyzed fruit growth and pectin contents for three consecutive years (from 2019 to 2021) until 180 days after full bloom (DAFB) at 15-day intervals to examine how pectin in the cell wall components affects fruit growth and development. Although there were no differences in the fruit size at harvest for these three years, the absolute fruit growth rate (AGR) peaked most rapidly in 2020, reaching the maximum fruit size earlier compared to the other two years. The pectin content of fruits in 2020, which showed the fastest growth, remained at a low level early in the growing season compared to those in the other years. The change in the pattern of the gradual increase in the PG activity with a decrease in the PME activity resulted in correspondingly different intersecting points over the three years. We found that the intersection of PME and PG activities observed in the order of 2020, 2021, and 2019 was identical to the order when the fruits reached their final weight. Interestingly, this timeline coincided with the point in time when the AGR increased rapidly over these three years. Differences in fruit volume increases, pectin contents, and pectin-degrading enzyme activities observed during fruit growth over three years suggest that the intersection of PME and PG activities is one of the key factors influencing cell expansion activation. Taken together, these results indicate that the intersection of PME and PG activities may affect the pectin content during fruit growth and development, which in turn affects the fruit growth rate in Asian pears.

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Section: Discussionmentioning

confidence: 99%

Different Activities of Pectin-degrading Enzymes Affecting the Growth of Asian Pears

Baek,

Park,

Lee

et al. 2023

HST

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“…In 2016, the world apple production was around 85 million tonnes (FAOSTAT, 2019). Bitter pit is considered a serious physiological disorder in several apple cultivars under different growing regions (A1 Shoffe et al 2019;McCormick et al 2021). The main symptoms of bitter pit include forming circular sunken lesions on fruits (1-4 mm) and bitter in taste, which could be found scattered in the flesh of the fruits (Jemrić et al 2016).…”

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confidence: 99%

Nano-Management of Bitter Pit in Apple Crop: A Short Communication

El-Ramady

Illés²,

Kassem

et al. 2021

EBSS

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itter pit is a physiological disorder in apple, which may happen during the end of season or during the postharvest. This phenomenon causes high economic losses for farmers and exporters as well. It is thought that calcium has a very strong relationship with bitter pit in apple, which appears as browning points due to the phenolic oxidation mainly during storage and death of cells directly below the fruit peels. The management of bitter pit depends on the enough and continues supplying Ca to cultivated apple trees before harvesting the fruits. The impacts of applied nano-Ca treatment on fruit quality of apple were more significant comparing to the conventional application of calcium chloride. These impacts included improving several quality characteristics such as total soluble solids in fruits, fruit firmness, titratable acidity, total antioxidant activity, total phenolic and anthocyanins content, as well as the contents of total sugars, starch, fiber, and calcium content. Therefore, there is an urgent need for further investigations concerning using of different nanofertilizers to avoid the problems of bitter pit in apple. Other applications of nanomaterials may support apple trees against this problem, which may open many fields in agro-nanotechnology.

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Delayed Controlled Atmosphere Storage Related to the Development of Internal Storage Disorders in Apples and Pears: A Review

Arriel Saquet

2024

Applied Fruit Science

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Occurrence of physiological browning disorders in stored ‘Braeburn’ apples as influenced by orchard and weather conditions

Cited by 19 publications

References 27 publications

Different Activities of Pectin-degrading Enzymes Affecting the Growth of Asian Pears

Different Activities of Pectin-degrading Enzymes Affecting the Growth of Asian Pears

Nano-Management of Bitter Pit in Apple Crop: A Short Communication

Delayed Controlled Atmosphere Storage Related to the Development of Internal Storage Disorders in Apples and Pears: A Review

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