Methyl jasmonate and acibenzolar-S-methyl protect cut Freesia hybrida inflorescences against Botrytis cinerea, but do not act synergistically

Darras, A.I., Joyce, D.C. and Terry, L.A. (2011) Methyl jasmonate and acibenzolar-S-methyl protect cut Freesia hybrida inflorescences against Botrytis cinerea, but do not act synergistically. Journal of Horticultural Science & Biotechnology, 86 1: 74-78.

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Name Description MIMEType Size Downloads
Author Darras, A.I.
Joyce, D.C.
Terry, L.A.
Title Methyl jasmonate and acibenzolar-S-methyl protect cut Freesia hybrida inflorescences against Botrytis cinerea, but do not act synergistically
Journal name Journal of Horticultural Science & Biotechnology   Check publisher's open access policy
ISSN 1462-0316
Publication date 2011-01-01
Sub-type Article (original research)
Open Access Status Not Open Access
Volume 86
Issue 1
Start page 74
End page 78
Total pages 5
Place of publication United Kingdom
Publisher Headley Brothers Ltd.
Language eng
Formatted abstract
Methyl jasmonate (MeJA) and acibenzolar-S-methyl (ASM), two potential elicitors which  activate plant defence responses, were tested on inflorescences of Freesia hybrida to suppress petal-specking caused by Botrytis cinerea. Compared to the untreated controls, MeJA applied as a vapour, pulse, or spray to freesia ‘Cote d’Azur’ inflorescences significantly reduced disease severity scores, lesion numbers, and lesion diameters on attached petals, and lesion diameters in a detached petal bioassay. ASM alone, at 143 μM, provided a degree of protection to freesia inflorescences by significantly reducing disease severity scores, lesion numbers, and lesion diameters compared to the untreated controls. However, no additive effect was observed for combined treatments with MeJA and ASM. Polyphenol oxidase (PPO) activities in 0.1 μl l–1 MeJA-treated inflorescences, at 24 h and 36 h post-treatment, were 2.7- and 2.0-fold higher, respectively, compared to the untreated controls. In contrast, phenylalanine ammonia-lyase (PAL) activity in 0.1 μl l–1 MeJA-treated inflorescences was suppressed after 36 h, 48 h, and 72 h of incubation compared to PAL activities in the untreated control flowers.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Agriculture and Food Sciences
 
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Created: Wed, 16 Mar 2011, 01:20:34 EST by Daryl Joyce on behalf of School of Agriculture and Food Sciences