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Bacterial Leaf Infiltration Assay for Fine Characterization of Plant Defense Responses using the Arabidopsis thaliana-Pseudomonas syringae Pathosystem
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Microbe Associated Molecular Pattern Signaling in Guard Cells.

Wenxiu Ye1, Yoshiyuki Murata1

  • 1Graduate School of Environmental and Life Science, Okayama University Okayama, Japan.

Frontiers in Plant Science
|May 21, 2016
PubMed
Summary

Plants close stomata when microbes are detected to prevent invasion. This review summarizes signaling pathways, including calcium and hydrogen peroxide, that regulate stomatal movement in response to microbe-associated molecular patterns (MAMPs).

Keywords:
Ca2+ signalingCa2+-dependent protein kinaseguard cellion channelsmicrobe-associated molecular patternsmitogen-activated protein kinaseopen stomata 1reactive oxygen species

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Area of Science:

  • Plant biology
  • Plant immunity
  • Cell signaling

Background:

  • Stomata are crucial for plant gas exchange and growth.
  • Microbes exploit stomata as entry points for invasion.
  • Plants possess defense mechanisms to prevent pathogen entry via stomata.

Purpose of the Study:

  • To review recent findings on the signaling pathways involved in MAMP-induced stomatal closure.
  • To compare MAMP-triggered stomatal signaling with other known signaling pathways.

Main Methods:

  • Literature review of recent studies on plant immunity and stomatal regulation.
  • Analysis of signaling cascades initiated by MAMP perception in guard cells.
  • Comparative analysis of different signaling pathways.

Main Results:

  • MAMP perception by guard cells triggers complex signal transduction pathways.
  • Key second messengers like Ca(2+) and H2O2 are involved in MAMP-induced stomatal closure.
  • Phosphorylation events and altered transporter activity are critical for stomatal movement.

Conclusions:

  • MAMP-induced stomatal closure is a vital plant defense mechanism.
  • Understanding these signaling pathways can inform strategies to enhance plant immunity.
  • Further research is needed to fully elucidate the intricacies of stomatal signaling.