Natural resistance of wood from three forest species exposed to Pycnoporus sanguineus xylophagous fungus

Alisson Rodrigo Souza Reis,Andrielly Gomes Loch,Patrícia Soares Bilhalva Dos Santos,Marcio Rogério Da Silva,Matheus Da Costa Gondim,Simone Maria Da Costa Oliveira Moreira

doi:10.34062/afs.v6i4.9492

Alisson Rodrigo Souza Reis, Andrielly Gomes Loch + Show 4 more

Open Access

https://doi.org/10.34062/afs.v6i4.9492

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Abstract

Wood is subject to degradation by biological agents. Therefore, studies are necessary to ensure its appropriate use, avoid economic losses. The objective of this study was to assess the natural resistance of Spanish cedar (Cedrela odorata), yellow ipe (Handroanthus serratifolius) and tauari (Couratari sp.) woods exposed under laboratory conditions to Pycnoporus sanguineus fungus, which causes white rot. The decay test was conducted according to the method defined in the American Society for Testing and Materials, and the intensity of biodeterioration was determined by mass loss of the three test woods and one control wood, pumpwood (Cecropia sp.), which has low natural resistance. Analysis of variance and Tukey’s test (p < 0.05) were used in the analysis of results. The wood species were classified as highly resistant and resistant to P. sanguineus. Yellow ipe was the most resistant species to fungus attack, whereas tauari was the most susceptible.

Highlights

The tropical Amazonian woods are highly sought after for their technological properties, among them the natural durability is the most important, but because they are highly durable wood it is not known how long these woods, mainly exposed to fungi, can remain intact.The natural durability of wood is one of the main factors that determine its use (Romanini et al, 2014)
The objective of this study was to assess the natural resistance of Spanish cedar (Cedrela odorata), yellow ipe (Handroanthus serratifolius) and tauari (Couratari sp.) woods exposed under laboratory conditions to Pycnoporus sanguineus fungus, which causes white rot
The decay test was conducted according to the method defined in the American Society for Testing and M aterials, and the intensity of biodeterioration was determined by mass loss of the three test woods and one control wood, pumpwood (Cecropia sp.), which has low natural resistance

Summary

Introduction

The tropical Amazonian woods are highly sought after for their technological properties, among them the natural durability is the most important, but because they are highly durable wood it is not known how long these woods, mainly exposed to fungi, can remain intact.The natural durability of wood is one of the main factors that determine its use (Romanini et al, 2014). The tropical Amazonian woods are highly sought after for their technological properties, among them the natural durability is the most important, but because they are highly durable wood it is not known how long these woods, mainly exposed to fungi, can remain intact. Despite the importance of characterizing the natural resistance of wood, in addition to the description of other technological properties, few studies have focused on wood from the Amazonian species (Pilocelli et al, 2015). M oreover, the natural durability of these woods varies as they are exposed to the action of wood-degrading agents. It is important to gain insight into the natural resistance of tropical woods and the behavior of fungi in the decay process by laboratory testing, with the aim of establishing standards, for tropical woods, as there are no specific norms and standards (Stangerlin et al, 2013)

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