Melatonin Preserves the Postharvest Quality of Cut Roses through Enhancing the Antioxidant System

The vase life of cut rose is relatively short, therefore; preserving its postharvest quality via eco-friendly approaches is of particular economic importance. From the previous literature, despite melatonin (MT) plays diverse important roles in the postharvest quality maintenance, its impact on pres...

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Bibliographic Details
Published in:Plants (Basel) 2022-10, Vol.11 (20), p.2713
Main Authors: Mazrou, Ragia M, Hassan, Sabry, Yang, Mei, Hassan, Fahmy A.S
Format: Article
Language:English
Subjects:
antioxidant enzymes
Antioxidants
Botanical research
Distilled water
Economic importance
Enzymatic activity
Enzymes
Epidermis
Flowering
Flowers
Flowers & plants
gene expression
Glutathione
Homeostasis
Hydrogen peroxide
Lipid peroxidation
Lipids
Maintenance
Melatonin
membrane stability
Moisture content
Peroxidation
Phenols
Physiological aspects
Physiology
Preservatives
Quality management
Roses
Scavenging
Senescence
Stomata
vase life
Water content
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Summary:The vase life of cut rose is relatively short, therefore; preserving its postharvest quality via eco-friendly approaches is of particular economic importance. From the previous literature, despite melatonin (MT) plays diverse important roles in the postharvest quality maintenance, its impact on preserving the postharvest quality of cut flowers is really scarce. This research therefore was undertaken to find out the possibility of exogenous MT as an eco-friendly preservative to extend the vase life of cut roses. The flowering stems of Rosa hybrida cv. ‘First Red’ were pulsed in MT solutions at 0, 0.1, 0.2 and 0.3 mM for 30 min and then transferred to distilled water for evaluation. The vase life was significantly prolonged and relative water content was considerably maintained due to MT application compared to the control, more so with 0.2 mM concentration which nearly doubled the vase life (1.9-fold) higher than the control. SEM investigation showed that MT treatment reduced the stomatal aperture in lower epidermis which was widely opened in control flowers. MT treatment significantly increased the phenol content, glutathione (GSH) content and CAT, APX and GR enzyme activities compared to untreated flowers. Additionally, the radical scavenging capacity in MT-treated flowers was considerably higher than that of control and therefore MT treatment reduced H2O2 production and lipid peroxidation, which altogether reflected in membrane stability maintenance.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants11202713