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Int. J. Mol. Sci. 2017, 18(8), 1789; doi:10.3390/ijms18081789

Modulatory Effects of Exogenously Applied Polyamines on Postharvest Physiology, Antioxidant System and Shelf Life of Fruits: A Review

1
Department of Agriculture and Environmental Sciences, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonepat, Haryana 131028, India
2
Department Food Technology, University Miguel Hernández, Orihuela, Alicante 03000 Spain
3
Department Applied Biology, University Miguel Hernández, Orihuela, Alicante 03000 Spain
*
Author to whom correspondence should be addressed.
Received: 1 August 2017 / Revised: 12 August 2017 / Accepted: 14 August 2017 / Published: 17 August 2017
(This article belongs to the Special Issue Ripening Control and Induction of the Defence and Antioxidant Systems)
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Abstract

Polyamines (PAs) are natural compounds involved in many growth and developmental processes in plants, and, specifically in fruits, play a vital role regulating its development, ripening and senescence processes. Putrescine (PUT), spermine (SPE), and spermidine (SPD) are prominent PAs applied exogenously to extend shelf life of fruits. They also originate endogenously during developmental phases of horticultural crops and simultaneously affect the quality attributes and shelf life. Their anti-ethylene nature is being exploited to enhance the shelf life when exogenously applied on fruits. In growth and development of fruits, PA levels generally fall, which marks the beginning of senescence at postharvest phase. PUT, SPE and SPD treatments are being applied during postharvest phase to prolong the shelf life. They enhance the shelf life of fruits by reducing respiration rate, ethylene release and enhance firmness and quality attributes in fruits. PAs have a mitigating impact on biotic and abiotic stresses including chilling injury (CI) in tropical and sub-tropical fruits. PAs are environment friendly in nature and are biodegradable without showing any negative effect on environment. Biotechnological interventions by using chimeric gene constructs of PA encoding genes has boosted the research to develop transgenic fruits and vegetables which would possess inherent or in situ mechanism of enhanced biosynthesis of PAs at different stages of development and thereby will enhance the shelf life and quality in fruits. Internal and external quality attributes of fruits are improved by modulation of antioxidant system and by strengthening biophysical morphology of fruits by electrostatic interaction between PAs and phospholipids in the cell wall. View Full-Text
Keywords: polyamines; putrescine; spermine; spermidine; physiology; respiration; ethylene; chilling injury; shelf life; antioxidants; encoding genes; S-adenosyl methionine polyamines; putrescine; spermine; spermidine; physiology; respiration; ethylene; chilling injury; shelf life; antioxidants; encoding genes; S-adenosyl methionine
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MDPI and ACS Style

Sharma, S.; Pareek, S.; Sagar, N.A.; Valero, D.; Serrano, M. Modulatory Effects of Exogenously Applied Polyamines on Postharvest Physiology, Antioxidant System and Shelf Life of Fruits: A Review. Int. J. Mol. Sci. 2017, 18, 1789.

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