Ref ID: 10989
Ref Type: Journal
Authors: Mihara, R., Barry, K. M., Mohammed, C. L., and Mitsunaga, T.
Pub Date: 2005
Journal Name: Journal of Chemical Ecology
Volume: 31
Issue: 4
Start Page: 789
End Page: 804
ISBN/ISSN:
Keywords: Acacia/Acacia mangium/antifungal wood defence/antioxidant/antioxidant activity/assay/comparison/effect/fungi/growth/heartrot/In Vitro/mechanism/resistance/south-east Asia/species/wood/wood decay fungi
Abstract: The effect of heartwood extracts from Acacia mangium (heartrot susceptible) and A. auriculiformis (heartrot resistant) was examined on the growth of wood rotting fungi with in vitro assays. A. auriculiformis heartwood extracts had higher antifungal activity than A. mangium. The compounds 3,4',7,8-tetrahydroxyflavanone and teracacidin (the most abundant flavonoids in both species) showed antifungal activity. A. auriculiformis contained higher levels of these flavonoids (3.5-fold and 43-fold higher, respectively) than A. mangium. This suggests that higher levels of these compounds may contribute to heartrot resistance. Furthermore, both flavonoids had strong DPPH radical scavenging activity and laccase inhibition. This suggests that the antifungal mechanism of these compounds may involve inhibition of fungal growth by quenching of free radicals produced by the extracellular fungal enzyme laccase
Notes: Entered by Karen Barry (03/12/2004). Edited by Caroline Mohammed (30/08/2005)
Reprint: Not in File
Program: SPF Resource Protection
Project: C5
Deliverable: C5-3
Confidentiality: Confidential to All Partners
Availability: Authors
Report: Annual Report 2004/5
Type: Article