Journal
JOURNAL OF EXPERIMENTAL BOTANY
Volume 69, Issue 20, Pages 4655-4658Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jxb/ery255
Keywords
Cell wall; exosomes; extracellular vesicles; glycoside hydrolases; leaderless proteins; unconventional protein secretion (UPS)
Categories
Funding
- Agencia Nacional de Promocion Cientifica y Tecnologica
- University of Mar del Plata, Argentina
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In animal systems extracellular vesicles (EV) are known to transport cargo molecules from the cytoplasm to the extracellular compartment and they are the accepted vehicles for unconventional protein secretion. Plants have recently been shown to release EV into the apoplast and here we postulate a role in cell wall remodeling. Delving deeper into our proteomics data we found that much of the protein complement of EV from sunflower seedlings corresponds to cell wall-related proteins, including enzymes that participate in the degradation and reorganization of polysaccharides. Accumulated data implicate EV in the unconventional secretion of cell wall-modifying enzymes.
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