Xylan-based nanocompartments orchestrate plant vessel wall patterning
Research output: Contribution to journal › Journal article › Research › peer-review
Nanoclustering of biomacromolecules allows cells to efficiently orchestrate biological processes. The plant cell wall is a highly organized polysaccharide network but is heterogeneous in chemistry and structure. However, polysaccharide-based nanocompartments remain ill-defined. Here, we identify a xylan-rich nanodomain at pit borders of xylem vessels. We show that these nanocompartments maintain distinct wall patterns by anchoring cellulosic nanofibrils at the pit borders, critically supporting vessel robustness, water transport and leaf transpiration. The nanocompartments are produced by the activity of IRREGULAR XYLEM (IRX)10 and its homologues, which we show are de novo xylan synthases. Our study hence outlines a mechanism of how xylans are synthesized, how they assemble into nanocompartments and how the nanocompartments sustain cell wall pit patterning to support efficient water transport throughout the plant body.
Original language | English |
---|---|
Journal | Nature Plants |
Volume | 8 |
Issue number | 3 |
Pages (from-to) | 295-306 |
Number of pages | 12 |
ISSN | 2055-026X |
DOIs | |
Publication status | Published - 2022 |
Bibliographical note
Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer Nature Limited.
ID: 302198407