期刊
FEBS LETTERS
卷 583, 期 20, 页码 3363-3366出版社
WILEY
DOI: 10.1016/j.febslet.2009.09.041
关键词
Extracellular; Phospholipids; GTPase; Exosome; Rab; Helianthus
资金
- ANPCYT (Argentina)
- University of Mar del Plata (Argentina)
- Agencia Espanola de Cooperacion Internacional [A/014378/07]
Based on the presence of phospholipids in the extracellular fluids (EFs) of sunflower seeds, we have hypothesized on the existence of vesicles in the apoplastic compartment of plants. Ultracentrifugation of sunflower EF allowed the isolation of particles of 50-200 nm with apparent membrane organization. A small GTPase Rab was putatively identified in this vesicular fraction. Since Rab proteins are involved in vesicular traffic and their presence in exosomes from animal fluids has been demonstrated, evidence presented here supports the existence of exosome-like vesicles in apoplastic fluids of sunflower. Their putative contribution to intercellular communication in plants is discussed. (C) 2009 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
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