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Postharvest treatment with trans-2-hexenal induced resistance against Botrytis cinerea in tomato fruit

Postharvest treatment with trans-2-hexenal induced resistance against Botrytis cinerea in tomato... Trans-2-hexenal is a biocidal molecule released in many fruits and vegetables. In this paper, the effects of trans-2-hexenal on the control of postharvest diseases in tomato fruits were investigated. We indicated that the incidence of natural infection and infection by Botrytis cinerea in tomato fruits was significantly decreased after treatment with trans-2-hexenal. Trans-2-hexenal increased the mRNA levels of genes encoding ethylene receptors, lipoxygenase and phenylalanine ammonia lyase (PAL), but did not induce the mRNA accumulation of the pathogenesis-related proteins, such as PR-1a or PR-5. The activities of peroxidases and PAL and the accumulation of phenolic compounds were significantly enhanced after trans-2-hexenal treatment. This is the first report of trans-2-hexenal as an elicitor and its ability to control the postharvest diseases in tomato fruits. These results suggest that the controlling effects of trans-2-hexenal on both natural infection and gray mould in tomato fruits might be related to JA/ET-mediated induced systemic resistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Postharvest treatment with trans-2-hexenal induced resistance against Botrytis cinerea in tomato fruit

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References (43)

Publisher
Springer Journals
Copyright
Copyright © 2014 by Australasian Plant Pathology Society Inc.
Subject
Life Sciences; Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1007/s13313-014-0331-6
Publisher site
See Article on Publisher Site

Abstract

Trans-2-hexenal is a biocidal molecule released in many fruits and vegetables. In this paper, the effects of trans-2-hexenal on the control of postharvest diseases in tomato fruits were investigated. We indicated that the incidence of natural infection and infection by Botrytis cinerea in tomato fruits was significantly decreased after treatment with trans-2-hexenal. Trans-2-hexenal increased the mRNA levels of genes encoding ethylene receptors, lipoxygenase and phenylalanine ammonia lyase (PAL), but did not induce the mRNA accumulation of the pathogenesis-related proteins, such as PR-1a or PR-5. The activities of peroxidases and PAL and the accumulation of phenolic compounds were significantly enhanced after trans-2-hexenal treatment. This is the first report of trans-2-hexenal as an elicitor and its ability to control the postharvest diseases in tomato fruits. These results suggest that the controlling effects of trans-2-hexenal on both natural infection and gray mould in tomato fruits might be related to JA/ET-mediated induced systemic resistance.

Journal

Australasian Plant PathologySpringer Journals

Published: Dec 19, 2014

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