iForest - Biogeosciences and Forestry


Bioactivity of ethanol extracts from Eucalyptus bosistoana F. Muell. heartwood

Gayatri Mishra (1), Ashley Garrill (2), Clemens M Altaner (1)   

iForest - Biogeosciences and Forestry, Volume 12, Issue 5, Pages 467-473 (2019)
doi: https://doi.org/10.3832/ifor3072-012
Published: Oct 14, 2019 - Copyright © 2019 SISEF

Research Articles

Variability in bioactivity and chemical composition of Eucalyptus bosistoana F. Muell. heartwood extracts between individual trees from two different sites were investigated. Combining the results of fungal assays and quantitative gas chromatography (GC) of the extracts allowed the investigation of bioactive compounds. The bioactivity of extracts was assessed against white rot (Trametes versicolor [L.] Lloyd) and brown rot (Coniophora cerebella Pers.). Ethanol extracts from E. bosistoana heartwood were less effective on the white rot than against the brown rot. Variability in the bioactivity of extracts against the two fungi was observed between the trees. A site effect in the bioactivity was found for the white rot but not the brown rot. Bioactivity of the extracts against the white rot was not correlated to that against the brown rot. The absence of a relationship between of effects of the extracts on the relative growth rates of the white rot and the brown rot indicated that the two fungi were affected by different compounds. Thirty two compounds were quantified in E. bosistoana ethanol extracts by GC, of which six (benzoic acid, hexadecanoic acid, 1,5-dihdroxy-12-methoxy-3,3-dimethyl-3,4-dihydro-1H-anthra[2,3-c]pyran-6,11-dione, octadecanoic acid, polyphenol and beta-sitosterol) were identified. Significant variability in eight compounds was found between the two sites. Multivariate (PLSR) analysis identified compounds at the retention times 10.2 and 11.5 min (hexadecanoic acid) to be most related to the bioactivity of the E. bosistoana heartwood extracts against white rot and brown rot.


Brown Rot, Extractives, Fungal Assays, Gas Chromatography, Heartwood, White Rot

Authors’ address

Gayatri Mishra
Clemens M Altaner 0000-0003-4542-4432
School of Forestry, University of Canterbury, Christchurch 8140 (New Zealand)
Ashley Garrill 0000-0002-2126-4211
School of Biological Sciences, University of Canterbury, Christchurch 8140 (New Zealand)

Corresponding author



Mishra G, Garrill A, Altaner CM (2019). Bioactivity of ethanol extracts from Eucalyptus bosistoana F. Muell. heartwood. iForest 12: 467-473. - doi: 10.3832/ifor3072-012

Academic Editor

Giacomo Goli

Paper history

Received: Feb 15, 2019
Accepted: Jul 23, 2019

First online: Oct 14, 2019
Publication Date: Oct 31, 2019
Publication Time: 2.77 months

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