Although blue sap-stain technically is a form of spalting, it has
not generated the same interest among artists and consumers as
have zone lines and other pigments (Robinson et al., 2013). Blue
stain is produced by ophiostomatoid fungi as well as some other
fungi, that can metabolize substances accumulated inside the
sapwood's resin canals, parenchyma cells and tracheid lumina
(Robinson, 1962). For industrial wood processing, the presence of
blue stain is considered a defect rather than an attribute, precisely
because of the changes that the melanized hyphae produce on the
natural color of the wood (Behrendt et al., 1995). In countries like
Chile, New Zealand and Canada, blue stain can be a major issue as
the dominant pine species are highly susceptible.
Although blue sap-stain technically is a form of spalting, it hasnot generated the same interest among artists and consumers ashave zone lines and other pigments (Robinson et al., 2013). Bluestain is produced by ophiostomatoid fungi as well as some otherfungi, that can metabolize substances accumulated inside thesapwood's resin canals, parenchyma cells and tracheid lumina(Robinson, 1962). For industrial wood processing, the presence ofblue stain is considered a defect rather than an attribute, preciselybecause of the changes that the melanized hyphae produce on thenatural color of the wood (Behrendt et al., 1995). In countries likeChile, New Zealand and Canada, blue stain can be a major issue asthe dominant pine species are highly susceptible.
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