Volumetric estimate of bordered pits in Pinus sylvestris based on X-ray tomography and light microscopy imaging

Publication date: Available online 13 June 2019Source: MicronAuthor(s): Tim Koddenberg, Maximilian Wentzel, Holger MilitzAbstractBordered pits are a major determinant for the hydraulic function of wood tissues. Unlike microscopic imaging (e.g. light and electron microscopy) that is constrained to two-dimensional (2D) information, X-ray micro-computed tomography (XμCT) contributes to three-dimensional (3D) analysis. This advantage was used to estimate the volume of bordered pits in Pinus sylvestris. The 3D data obtained by XµCT were compared with two mathematical models (ellipsoid model and spherical cap models) using 2D data obtained by transmission light microscopy and XµCT. The findings of this study showed that the volume approximation using the ellipsoid model revealed values close to the volumes, which were three-dimensionally obtained by XµCT. This trend, however, is more pronounced for pits in earlywood than in latewood. Nevertheless, this study demonstrated that microscopic images can also be used for the approximation of pit volumes to some extent. Researchers should be aware of limitations that come with the 3D method (e.g. resolution, image analysis) and 2D method (unknown location of the section in the pit) as well as the natural variation of the pit morphology.

Source: Micron - June 15, 2019 Category: Biology Source Type: research