Plant Pathology (2006) 55, 100-105

F. Neri, M. Mari and S. Brigati (2006)
Control of Penicillium expansum by plant volatile compounds
Plant Pathology 55 (1), 100-105
Abstract: Nine plant volatiles were tested for their activity in vitro and in vivo against Penicillium expansum, the cause of blue mould of pear. In vitro spore germination and mycelial growth assay showed a consistent fungicidal activity by trans-2-hexenal, carvacrol, trans-cinnamaldehyde and citral, while hexanal (-)- carvone, p-anisaldehyde, eugenol and 2-nonanone exhibited a progressively lower inhibition. trans-2-Hexenal was the best inhibitor of conidial germination [MIC (minimum inhibitory concentration) = 24·6 µL L^-1; ED₅₀ = 10·2 µL L^-1], while carvacrol was the best inhibitor of mycelial growth (MIC = 24·6 µL L^-1; ED₅₀ = 9 µL L^-1). The four most active compounds in in vitro studies were tested in vivo as fumigants against blue mould on pear cv. Conference. Best control was achieved by trans-2-hexenal vapour treatments (12·5 µL L^-1) when applied over a 24-h period, beginning 24 h after inoculation. In contrast, carvacrol (12·5-200 µL L^-1), and trans-cinnamaldehyde (50-400 µL L^-1) were ineffective and citral (200 µL L^-1) showed only slight effect.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Marta Mari

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Penicillium expansum	Stored fruits/vegetables