Mekhala Dk Vithana1, Zora Singh1, Stuart K Johnson1,2, Ritu Gupta3. 1. Faculty of Science and Engineering, Curtin Horticulture Research Laboratory, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia. 2. Faculty of Science and Engineering, School of Molecular and Life Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia. 3. Faculty of Science and Engineering, School of Electrical Engineering, Computing and Mathematical Sciences, Curtin University, Perth, Western Australia.
Abstract
BACKGROUND: Mango fruit harvested at green mature stage were treated with methyl jasmonate (MeJA), nitric oxide (NO), or salicylic acid (SA) to investigate their effects on phytochemical concentrations in ripe fruit. RESULTS: Fruit fumigated with MeJA showed the highest increase in the concentrations of gallic acid (33.0%), caffeic acid (80.0%), total phenols (38.4%), and total antioxidant capacity (20.9%) in the peel, and total carotenoids (48.7%) in the pulp, compared to control. The fruit dipped in SA showed the highest increase in the concentrations of lupeol (59.8%) and ferulic acid (73.2%) in the pulp and ferulic acid (67.4%) in the peel. Fruit fumigated with NO or MeJA showed the highest concentrations of lupeol in the peel (94.3%, 119.4%), and gallic acid (37.9%, 61.0%), total phenols (62.7%, 31.0%), and ascorbic acid (17.7%, 18.8%) in the pulp respectively. All the elicitor treatments were significantly effective in increasing concentrations of mangiferin and chlorogenic acid in the pulp and peel, vanillic acid in the peel, and total antioxidant capacity in the pulp. CONCLUSION: Overall, MeJA (10-5 to 10-4 mol L-1 ) was identified as the most effective elicitor for triggering phytochemical production during ripening of harvested mango fruit.
BACKGROUND:Mango fruit harvested at green mature stage were treated with methyl jasmonate (MeJA), nitric oxide (NO), or salicylic acid (SA) to investigate their effects on phytochemical concentrations in ripe fruit. RESULTS: Fruit fumigated with MeJA showed the highest increase in the concentrations of gallic acid (33.0%), caffeic acid (80.0%), total phenols (38.4%), and total antioxidant capacity (20.9%) in the peel, and total carotenoids (48.7%) in the pulp, compared to control. The fruit dipped in SA showed the highest increase in the concentrations of lupeol (59.8%) and ferulic acid (73.2%) in the pulp and ferulic acid (67.4%) in the peel. Fruit fumigated with NO or MeJA showed the highest concentrations of lupeol in the peel (94.3%, 119.4%), and gallic acid (37.9%, 61.0%), total phenols (62.7%, 31.0%), and ascorbic acid (17.7%, 18.8%) in the pulp respectively. All the elicitor treatments were significantly effective in increasing concentrations of mangiferin and chlorogenic acid in the pulp and peel, vanillic acid in the peel, and total antioxidant capacity in the pulp. CONCLUSION: Overall, MeJA (10-5 to 10-4 mol L-1 ) was identified as the most effective elicitor for triggering phytochemical production during ripening of harvested mango fruit.
Authors: Salvador González-Gordo; Rocío Bautista; M Gonzalo Claros; Amanda Cañas; José M Palma; Francisco J Corpas Journal: J Exp Bot Date: 2019-08-29 Impact factor: 6.992