期刊
PLANT PHYSIOLOGY
卷 173, 期 1, 页码 728-741出版社
AMER SOC PLANT BIOLOGISTS
DOI: 10.1104/pp.16.01253
关键词
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资金
- National Institute of General Medical Sciences of the National Institutes of Heath [R01 GM063761]
- Bridge Funding program of the Indiana University Office of the Vice Provost for Research
- Indiana University Foundation
Exosomes are extracellular vesicles (EVs) that play a central role in intercellular signaling in mammals by transporting proteins and small RNAs. Plants are also known to produce EVs, particularly in response to pathogen infection. The contents of plant EVs have not been analyzed, however, and their function is unknown. Here, we describe a method for purifying EVs from the apoplastic fluids of Arabidopsis (Arabidopsis thaliana) leaves. Proteomic analyses of these EVs revealed that they are highly enriched in proteins involved in biotic and abiotic stress responses. Consistent with this finding, EV secretion was enhanced in plants infected with Pseudomonas syringae and in response to treatment with salicylic acid. These findings suggest that EVs may represent an important component of plant immune responses.
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