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Open AccessArticle

Comparative Membrane-Associated Proteomics of Three Different Immune Reactions in Potato

Department of Plant Protection Biology, Swedish University of Agricultural Sciences, 230 53 Alnarp, Sweden
Department of Immunotechnology, Lund University, 221 00 Lund, Sweden
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2018, 19(2), 538;
Received: 15 December 2017 / Revised: 2 February 2018 / Accepted: 8 February 2018 / Published: 10 February 2018
Plants have evolved different types of immune reactions but large-scale proteomics about these processes are lacking, especially in the case of agriculturally important crop pathosystems. We have established a system for investigating PAMP-triggered immunity (PTI) and two different effector-triggered immunity (ETI; triggered by Avr2 or IpiO) responses in potato. The ETI responses are triggered by molecules from the agriculturally important Phytophthora infestans interaction. To perform large-scale membrane protein-based comparison of these responses, we established a method to extract proteins from subcellular compartments in leaves. In the membrane fractions that were subjected to quantitative proteomics analysis, we found that most proteins regulated during PTI were also regulated in the same way in ETI. Proteins related to photosynthesis had lower abundance, while proteins related to oxidative and biotic stress, as well as those related to general antimicrobial defense and cell wall degradation, were found to be higher in abundance. On the other hand, we identified a few proteins—for instance, an ABC transporter-like protein—that were only found in the PTI reaction. Furthermore, we also identified proteins that were regulated only in ETI interactions. These included proteins related to GTP binding and heterotrimeric G-protein signaling, as well as those related to phospholipase signaling. View Full-Text
Keywords: ETI; effector-triggered immunity; PTI; potato; proteomics; Désirée ETI; effector-triggered immunity; PTI; potato; proteomics; Désirée
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Burra, D.D.; Lenman, M.; Levander, F.; Resjö, S.; Andreasson, E. Comparative Membrane-Associated Proteomics of Three Different Immune Reactions in Potato. Int. J. Mol. Sci. 2018, 19, 538.

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