Role of canopy positions on rind biochemical concentrations and radical-scavenging activities in relation to rind breakdown of ‘Nules Clementine’ mandarins stored at non-chilling temperature

Olarewaju, Olaoluwa Omoniyi; Magwaza, Lembe Samukelo; Fawole, Olaniyi Amos; Tesfay, S.Z.; Opara, Umezuruike Linus

doi:10.1016/j.scienta.2017.08.048

Cited by 12 publications

(8 citation statements)

References 49 publications

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“…In the present study, ABA‐GE increased over time as fruit continued losing moisture and developed RBD. Previous studies by Magwaza et al and Olarewaju et al on ‘Nules Clementine’ mandarin consistently showed that the rind of fruit borne on the outside position of the canopy had significantly higher concentrations of non‐structural carbohydrates (sucrose, glucose and fructose) than the fruit from the inside canopy position . The higher concentration of ABA‐GE and 7‐OH‐ABA observed in fruit from the inside canopy position in the current study is hypothesized to result from lower solute osmotic potential due to the higher osmoregulatory action of sucrose .…”

Section: Resultssupporting

confidence: 69%

“…The data herein showed that the concentration of ABA at the time of harvest cannot be directly linked with fruit susceptibility to RBD. Other compounds which may protect fruit against physiological disorders such as antioxidants, and ABA catabolites may also play a role. This is in agreement with the results reported by Kawada who showed that grapefruits were resistant to chilling injury even when the ABA concentration was low at the time of harvest.…”

Section: Resultsmentioning

confidence: 99%

“…Previous studies by Magwaza et al 2,28 and Olarewaju et al 33 on 'Nules Clementine' mandarin consistently showed that the rind of fruit borne on the outside position of the canopy had significantly higher concentrations of non-structural carbohydrates (sucrose, glucose and fructose) than the fruit from the inside canopy position. 2,28,33 The higher concentration of ABA-GE and 7-OH-ABA observed in fruit from the inside canopy position in the current study is hypothesized to result from lower solute osmotic potential due to the higher osmoregulatory action of sucrose. 2 This suggests a possible link between fruit position, rind sugar concentration, ABA metabolites and ultimately the development of the disorder.…”

Section: Incidence Of Rind Breakdown Disordermentioning

confidence: 87%

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Investigating the involvement of ABA, ABA catabolites and cytokinins in the susceptibility of ‘Nules Clementine’ mandarin to rind breakdown disorder

et al. 2019

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BACKGROUND ‘Nules Clementine’ mandarin was used to investigate the potential involvement of endogenous plant hormones in mediating citrus fruit susceptibility to rind breakdown disorder (RBD). The effect of light exposure (namely canopy position and bagging treatments) on the endogenous concentration of ABA, 7′‐hydroxy‐abscisic acid (7‐OH‐ABA), ABA‐glucose ester (ABA‐GE) and dihydrophaseic acid (DPA), and t‐zeatin was tested using four preharvest treatments: outside, outside bagged, inside and inside bagged. Phytohormones concentration was evaluated during nine weeks of postharvest storage at 8 °C. RESULTS The shaded fruit inside the canopy had the highest RBD score (0.88) at the end of postharvest storage, while sun‐exposed fruit had the lowest score (0.12). Before storage, ABA concentration was lowest (462.8 µg kg−1) for inside fruit, and highest in outside bagged fruit (680.5 µg kg−1). Although ABA concentration suddenly increased from the third week, reaching a maximum concentration of 580 µg kg−1 at week 6 in fruit from inside position, it generally reduced 1.6‐fold ranging from 240.52 to 480.65 µg kg−1 throughout storage. The increase of 7‐OH‐ABA was more prominent in fruit from inside canopy. Overall, the concentration of ABA‐GE increased three‐fold with storage time. DPA concentration of bagged fruit from inside canopy position was significantly higher compared to outside fruit. The lower ABA‐GE and higher DPA concentration in inside bagged fruit throughout storage also coincided with higher RBD. CONCLUSION The strong positive correlations between 7‐OH‐ABA, DPA and RBD incidence demonstrated that these ABA catabolites could be used as biomarkers for fruit susceptibility to the disorder. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Section: Incidence Of Rind Breakdown Disordermentioning

confidence: 87%

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Investigating the involvement of ABA, ABA catabolites and cytokinins in the susceptibility of ‘Nules Clementine’ mandarin to rind breakdown disorder

et al. 2019

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“…Rind biochemical properties including total carotenoids, radical-scavenging activities, chlorophyll a, chlorophyll b, soluble sugars, total phenolics, and total flavonoids concentrations were determined as described elsewhere (Olarewaju et al 2017). Rind color of the fruit was measured as described by Olarewaju et al (2018).…”

Section: Determination Of Rind Biochemical Propertiesmentioning

confidence: 99%

“…Similarly, canopy position, which determines varying intensity of sunlight and other abiotic factors reaching different positions of tree canopy, affects the physiological activities and biochemical properties of fruit rind (Cronje et al, 2011;Magwaza et al, 2014a). Canopy positions, exposure to high (outside) or low (inside) sunlight in fruit tree canopy, have been found to affect the biochemical properties of citrus fruit rinds such as 'Nules clementine' mandarin fruit, thereby influencing its outward appearance (Cronje et al, 2013;Magwaza, 2013;Olarewaju et al 2017). Therefore, the possible link among canopy position, rind soluble sugars, and emergence of rind breakdown of mandarin fruit have been suggested (Cronje, Graham H. Barry, et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Canopy Position Affect Rind Biochemical Properties of ‘Marsh’ Grapefruit during Postharvest Cold Storage at Non-chilling Temperature

Olarewaju

Magwaza

Fawole

et al. 2020

International Journal of Fruit Science

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Effect of canopy position on rind biochemical properties of 'Marsh' grapefruit during postharvest non-chilling cold storage was evaluated on fruit harvested from different orchard locations. Inside canopy (IC) and outside canopy (OC) fruits were harvested at commercial maturity from two commercial farms located at KwaZulu-Natal (KZN) and Limpopo (LMP), South Africa, during two seasons. Rind biochemical analyses including color indices, total phenolic concentration, and sugars were performed on harvested grapefruit after Weeks 0, 3, 6, and 9 of cold storage at 7.5 ± 0.5°C. Canopy position showed a high significant (p < .001) effect on rind biochemicals while significant (p < .05) influence of orchard locations was observed on the same parameters. Reducing sugars were more concentrated in IC fruit harvested from both orchard location than OC fruit at Weeks 0 and 3, but inverse results occurred at Weeks 6 and 9. Orchard location significantly (p < .001) influenced vitamin C (14.4, 14.2, 14.4, 14.8 g kg −1 ) and (12.3, 16.1, 15.9, 14.6 g kg −1 ) of fruit rind at Weeks 0, 3, 6, and 9 from KZN and LMP, respectively. This study revealed that canopy position can influence rind biochemical properties of 'Marsh' grapefruit during non-chilling postharvest cold storage. However, further studies are required to formulate and provide the citrus industries with adequate advice.

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Opuntia ficus indica mucilage coatings regulate cell wall softening enzymes and delay the ripening of banana fruit stored at retail conditions

Shinga

Fawole

2023

International Journal of Biological Macromolecules

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Role of canopy positions on rind biochemical concentrations and radical-scavenging activities in relation to rind breakdown of ‘Nules Clementine’ mandarins stored at non-chilling temperature

Cited by 12 publications

References 49 publications

Investigating the involvement of ABA, ABA catabolites and cytokinins in the susceptibility of ‘Nules Clementine’ mandarin to rind breakdown disorder

Investigating the involvement of ABA, ABA catabolites and cytokinins in the susceptibility of ‘Nules Clementine’ mandarin to rind breakdown disorder

Canopy Position Affect Rind Biochemical Properties of ‘Marsh’ Grapefruit during Postharvest Cold Storage at Non-chilling Temperature

Opuntia ficus indica mucilage coatings regulate cell wall softening enzymes and delay the ripening of banana fruit stored at retail conditions

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