Journal ArticleDOI
The role and regulation of programmed cell death in plant–pathogen interactions
Jean T. Greenberg,Nan Yao +1 more
TLDR
Recent progress is reviewed in determining the role and regulation of plant pcd responses that accompany both resistance and susceptible interactions and the mechanisms by which plant pCD occurs during these different interactions.Abstract:
It is commonly known that animal pathogens often target and suppress programmed cell death (pcd) pathway components to manipulate their hosts. In contrast, plant pathogens often trigger pcd. In cases in which plant pcd accompanies disease resistance, an event called the hypersensitive response, the plant surveillance system has learned to detect pathogen-secreted molecules in order to mount a defence response. In plants without genetic disease resistance, these secreted molecules serve as virulence factors that act through largely unknown mechanisms. Recent studies suggest that plant bacterial pathogens also secrete antiapoptotic proteins to promote their virulence. In contrast, a number of fungal pathogens secrete pcd-promoting molecules that are critical virulence factors. Here, we review recent progress in determining the role and regulation of plant pcd responses that accompany both resistance and susceptible interactions. We also review progress in discerning the mechanisms by which plant pcd occurs during these different interactions.read more
Citations
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Review hypersensitive cell death in plants - its mechnisms and role in plant defence against pathogens
TL;DR: In this paper, a recent review of the understanding of the hypersensitive response (HR) of plants with special consideration to the physiological and biochemical determinants in different model systems is presented.
Journal ArticleDOI
A cellular gene as a double surveillance agent for plant to combat pathogen.
TL;DR: RbCS, a cellular gene, acts as a double surveillance agent to protect plant from pathogenic attack, suggesting a previously un-recognized defense strategy in plants.
Book ChapterDOI
Apoptosis in Fungal Development and Ageing
TL;DR: Current knowledge about apoptosis in yeasts and in filamentous fungi is summarized and a comprehensive description and evaluation of the role in development and ageing is focused on.
Dissertation
Programmed cell death and genetic stability in conifer embryogenesis
TL;DR: It is found that VEIDase is the principal caspase-like activity, localized specifically in suspensor cells, and its inhibition prevents normal embryo development by blocking the suspensor differentiation.
Genetic and Molecular Mechanisms Controlling Reactive Oxygen Species and Hormonal Signalling of Cell Death in Response to Environmental Stresses in Arabidopsis thaliana
TL;DR: Observations implied an essential role of SA in the acclimation processes and in regulating the redox homeostasis of the cell in plants.
References
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Journal ArticleDOI
Mitochondria and apoptosis
Douglas R. Green,John C. Reed +1 more
TL;DR: A variety of key events in apoptosis focus on mitochondria, including the release of caspase activators (such as cytochrome c), changes in electron transport, loss of mitochondrial transmembrane potential, altered cellular oxidation-reduction, and participation of pro- and antiapoptotic Bcl-2 family proteins.
Journal ArticleDOI
COI1: An Arabidopsis Gene Required for Jasmonate-Regulated Defense and Fertility
TL;DR: The coi1 mutation defines an Arabidopsis gene required for response to jasmonates, which regulate defense against insects and pathogens, wound healing, and pollen fertility as mentioned in this paper.
Journal ArticleDOI
Arabidopsis gp91phox homologues AtrbohD and AtrbohF are required for accumulation of reactive oxygen intermediates in the plant defense response
TL;DR: In this paper, the authors analyzed lines carrying dSpm insertions in the highly expressed AtrbohD and AtrabohF genes, which are required for full ROI production observed during incompatible interactions with the bacterial pathogen Pseudomonas syringae pv.
Journal ArticleDOI
Direct interaction of resistance gene and avirulence gene products confers rice blast resistance
TL;DR: It is reported here that transient expression of AVR‐Pita176 inside plant cells results in a Pi‐ta‐dependent resistance response, and data suggest that the AVR-Pita 176 protein binds directly to the Pi‐TA LRD region inside the plant cell to initiate a Pi-ta‐mediated defense response.