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A Hydroponic Co-cultivation System for Simultaneous and Systematic Analysis of Plant/Microbe Molecular Interactions and Signaling
Published on: July 22, 2017
Centrality of host cell death in plant-microbe interactions
Martin B Dickman1, Robert Fluhr
1Institute for Plant Genomics and Biotechnology, Center for Cell Death and Differentiation, Department of Plant Pathology and Microbiology, Texas A&M University, College Station, Texas 77843, USA. mbdickman@tamu.edu
Annual Review of Phytopathology
|August 7, 2013
Summary
Programmed cell death (PCD) is crucial for plant-microbe interactions. Controlling PCD determines host resistance or pathogen susceptibility, with the vacuole playing a key role in plant cell death pathways.
Area of Science:
- Plant biology
- Cellular biology
- Pathogen-host interactions
Background:
- Programmed cell death (PCD) is vital for eukaryotic growth, development, and homeostasis.
- PCD regulation is critical in plant-microbe interactions, influencing host resistance or susceptibility.
- While conserved in principle, plant and animal PCD execution differs, lacking shared core genes but showing functional equivalence with heterologous elements.
Purpose of the Study:
- To review current knowledge and identify gaps in understanding plant PCD pathways.
- To explore the role of the vacuole and autophagy in plant PCD.
- To discuss how plants integrate signals, like salicylic acid and reactive oxygen species, to orchestrate cell death.
Main Methods:
- Literature review and synthesis of existing research on plant PCD.
- Comparative analysis of conserved and divergent features of PCD between plants and animals.
- Discussion of signaling pathways (salicylic acid, reactive oxygen species) involved in plant cell death.
Main Results:
- The vacuole is identified as a key organelle modulating plant PCD through membrane fusion or disintegration.
- Autophagy's role in plant PCD is complex, with evidence supporting both prosurvival and prodeath functions.
- Plant PCD pathways, while lacking direct mammalian gene homologs, can be functionally influenced by animal regulatory elements.
Conclusions:
- The outcome of plant-pathogen interactions is determined not by cell death itself, but by the processes leading to it.
- Understanding the intricate signaling networks and organelle roles in plant PCD is essential for controlling plant diseases.
- Further research is needed to fully elucidate the mechanisms and regulation of plant programmed cell death.
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