Work

The exocyst subunit Exo70B1 is involved in the immune response of Arabidopsis thaliana to different pathogens and cell death

Year: 2013

Type: article

Abstract: Components of the vesicle trafficking machinery are central to the immune response in plants. The role of vesicle trafficking during pre-invasive penetration resistance has been well documented. However, emerging evidence also implicates vesicle trafficking in early immune signaling. Here we report that Exo70B1, a subunit of the exocyst complex which mediates early tethering during exocytosis is involved in resistance. We show that exo70B1 mutants display pathogen-specific immuno-compromised phenotypes. We also show that exo70B1 mutants display lesion-mimic cell death, which in combination with the reduced responsiveness to pathogen-associated molecular patterns (PAMPs) results in complex immunity-related phenotypes.

Source: Plant Signaling & Behavior

DOI: 10.4161/psb.27421

Authors: Martin Stegmann, Ryan G Anderson, Lore Westphal, Sabine Rosahl, John M McDowell, Marco Trujillo

Institutions: Leibniz Institute of Plant Biochemistry, Virginia Tech

Language: English

Topic: Plant-Microbe Interactions and Immunity

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

Open Access status: bronze

Funders: National Science Foundation, Deutsche Forschungsgemeinschaft, Leibniz-Gemeinschaft

Awards: G377979476, Functions of Conserved Oomycete Effector Proteins