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Role of brassinosteroids, ethylene, abscisic acid, and indole-3-acetic acid in mango fruit ripening


Zaharah, SS and Singh, Z and Symons, GM and Reid, JB, Role of brassinosteroids, ethylene, abscisic acid, and indole-3-acetic acid in mango fruit ripening, Journal of Plant Growth Regulation, 31, (3) pp. 363-372. ISSN 0721-7595 (2011) [Refereed Article]

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Copyright 2011 Springer Science+Business Media

DOI: doi:10.1007/s00344-011-9245-5


Rapid ripening of mango fruit limits its distribution to distant markets. To better understand and perhaps manipulate this process, we investigated the role of plant hormones in modulating climacteric ripening of ‘Kensington Pride’ mango fruits. Changes in endogenous levels of brassinosteroids (BRs), abscisic acid (ABA), indole-3-acetic acid (IAA), and ethylene and the respiration rate, pulp firmness, and skin color were determined at 2-day intervals during an 8-day ripening period at ambient temperature (21 ± 1°C). We also investigated the effects of exogenously applied epibrassinolide (Epi-BL), (+)-cis, trans-abscisic acid (ABA), and an inhibitor of ABA biosynthesis, nordihydroguaiaretic acid (NDGA), on fruit-ripening parameters such as respiration, ethylene production, fruit softening, and color. Climacteric ethylene production and the respiration peak occurred on the fourth day of ripening. Castasterone and brassinolide were present in only trace amounts in fruit pulp throughout the ripening period. However, the exogenous application of Epi-BL (45 and 60 ng g-1 FW) advanced the onset of the climacteric peaks of ethylene production and respiration rate by 2 and 1 day, respectively, and accelerated fruit color development and softening during the fruit-ripening period. The endogenous level of ABA rose during the climacteric rise stage on the second day of ripening and peaked on the fourth day of ripening. Exogenous ABA promoted fruit color development and softening during ripening compared with the control and the trend was reversed in NDGA-treated fruit. The endogenous IAA level in the fruit pulp was higher during the preclimacteric minimum stage and declined during the climacteric and postclimacteric stages. We speculate that higher levels of endogenous IAA in fruit pulp during the preclimacteric stage and the accumulation of ABA prior to the climacteric stage might switch on ethylene production that triggers fruit ripening. Whilst exogenous Epi-BL promoted fruit ripening, endogenous measurements suggest that changes in BRs levels are unlikely to modulate mango fruit ripening.

Item Details

Item Type:Refereed Article
Keywords:Mangifera indica L., brassinosteroids, ethylene, abscisic acid, auxin, respiration, fruit ripening, climacteric
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Horticultural crops not elsewhere classified
UTAS Author:Reid, JB (Professor Jim Reid)
ID Code:77038
Year Published:2011
Web of Science® Times Cited:73
Deposited By:Plant Science
Deposited On:2012-03-16
Last Modified:2017-10-06
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