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Intra-annual fluctuation in morphology and microfibril angle of tracheids revealed by novel microscopy-based imaging
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Intra-annual fluctuation in morphology and microfibril angle of tracheids revealed by novel microscopy-based imaging
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Intra-annual fluctuation in morphology and microfibril angle of tracheids revealed by novel microscopy-based imaging
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Journal Article
Intra-annual fluctuation in morphology and microfibril angle of tracheids revealed by novel microscopy-based imaging
2022
Overview
Woody cells, such as tracheids, fibers, vessels, rays etc., have unique structural characteristics such as nano-scale ultrastructure represented by multilayers, microfibril angle (MFA), micro-scale anatomical properties and spatial arrangement. Simultaneous evaluation of the above indices is very important for their adequate quantification and extracting the effects of external stimuli from them. However, it is difficult in general to achieve the above only by traditional methodologies. To overcome the above point, a new methodological framework combining polarization optical microscopy, fluorescence microscopy, and image segmentation is proposed. The framework was tested to a model softwood species, Chamaecyparis obtusa for characterizing intra-annual transition of MFA and tracheid morphology in a radial file unit. According our result, this framework successfully traced the both characteristics tracheid by tracheid and revealed the high correlation (| r | > 0.5) between S 2 microfibril angles and tracheidal morphology (lumen radial diameter, tangential wall thickness and cell wall occupancy). In addition, radial file based evaluation firstly revealed their complex transitional behavior in transition and latewood. The proposed framework has great potential as one of the unique tools to provide detailed insights into heterogeneity of intra and inter-cells in the wide field of view through the simultaneous evaluation of cells’ ultrastructure and morphological properties.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
