Xylan-rich nanodomains at pit borders of xylem vessels determine a pitted wall pattern by anchoring cellulosic nanofibrils at the pit edges and are crucial to support vessel robustness, water transport and leaf transpiration. These nanocompartments are mostly produced by the de novo xylan synthase IRREGULAR XYLEM (IRX)10 and its homologues.
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References
Oda, Y. & Fukuda, H. Initiation of cell wall pattern by a Rho- and microtubule-driven symmetry breaking. Science 337, 1333–1336 (2012). This paper reports that Rho GTPase-mediated reorganization of cortical microtubules determines pit position in xylem vessel cells.
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This is a summary of: Wang, H. et al. Xylan-based nanocompartments orchestrate plant vessel wall patterning. Nat. Plants https://doi.org/10.1038/s41477-022-01113-1 (2022).
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Unprecedented polysaccharide nanostructures sustain vessel wall patterning and robustness. Nat. Plants 8, 330–331 (2022). https://doi.org/10.1038/s41477-022-01138-6
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DOI: https://doi.org/10.1038/s41477-022-01138-6
