Defensive strategies of Norway spruce and Kurile larch heartwood elucidated on the micron-level.

ABSTRACT: To decarbonize the building sector, the use of durable wood materials must be increased. Inspiration for environmentally benign wood protection systems is sought in durable tree species depositing phenolic extractives in their heartwood. Based on the hypothesis that the micro-distribution of extractives influences durability, we compared the natural impregnation patterns of non-durable, but readily available Norway spruce to more durable Kurile larch by mapping the distribution of heartwood extractives with Confocal Raman Imaging and multivariate data decomposition. Phenolics of both species were associated with hydrophobic oleoresin, likely facilitating diffusion through the tissue. They accumulated preferentially in lignin-rich sub-compartments of the cell wall. Yet, the distribution of

SUBMITTER: Fuchtner S 

PROVIDER: S-EPMC8593066 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature