Journal
MOLECULAR PLANT-MICROBE INTERACTIONS
Volume 26, Issue 6, Pages 626-632Publisher
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/MPMI-12-12-0288-CR
Keywords
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Funding
- Deutsche Forschungsgemeinschaft [BO3155/3-1]
- Gatsby Charitable Foundation
- European Research Council (ERC)
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Guard cells regulate plant gas exchange and transpiration by modulation of stomatal aperture upon integrating external cues like photosynthetic effective illumination, CO2 levels and water availability and internal signals like abscisic acid (ABA). Being pores, stomata constitute a natural entry site for potentially harmful microbes. To prevent microbial invasion, stomata close upon perception of microbe-associated molecular patterns (MAMPs), and this represents an important layer of active immunity at the preinvasive level. The signaling pathways leading to stomatal closure triggered by biotic and abiotic stresses employ several common components, such as reactive oxygen species, calcium, kinases, and hormones, suggesting considerable intersection between MAMP- and ABA-induced stomatal closures, which we will discuss in this review.
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