The functions of WHIRLY1 and REDOX-RESPONSIVE TRANSCRIPTION FACTOR 1 in cross tolerance responses in plants: a hypothesis

@article{Foyer2014TheFO,
  title={The functions of WHIRLY1 and REDOX-RESPONSIVE TRANSCRIPTION FACTOR 1 in cross tolerance responses in plants: a hypothesis},
  author={Christine Helen Foyer and Barbara Karpinska and Karin Krupinska},
  journal={Philosophical Transactions of the Royal Society B: Biological Sciences},
  year={2014},
  volume={369}
}
Chloroplasts are important sensors of environment change, fulfilling key roles in the regulation of plant growth and development in relation to environmental cues. Photosynthesis produces a repertoire of reductive and oxidative (redox) signals that provide information to the nucleus facilitating appropriate acclimation to a changing light environment. Redox signals are also recognized by the cellular innate immune system allowing activation of non-specific, stress-responsive pathways that… 

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References

SHOWING 1-10 OF 85 REFERENCES
Common Components, Networks, and Pathways of Cross-Tolerance to Stress. The Central Role of “Redox” and Abscisic Acid-Mediated Controls1
TLDR
The major focus of this review concerns the basic features of signaling that underpin cross-tolerance and result from the action of common elements, which are likely to occur early in the stress response cascade.
Redox regulation in photosynthetic organisms: signaling, acclimation, and practical implications.
TLDR
This review focuses on current knowledge of the pathways of redox regulation, with discussion of the somewhat juxtaposed hypotheses of "oxidative damage" versus "Oxidative signaling," within the wider context of physiological function, from plant cell biology to potential applications.
Regulation of basal and oxidative stress-triggered jasmonic acid-related gene expression by glutathione.
TLDR
Comparing JA-linked gene expression in cat2 cad2 and cat2 npr1 double mutants provides evidence that glutathione acts through other components to regulate the response of this pathway to oxidative stress and suggests novel glutathion-dependent control points that regulate JA signalling in response to intracellular oxidation.
The roles of two transcription factors, ABI4 and CBFA, in ABA and plastid signalling and stress responses
TLDR
It is found that once ABI4 bound the element (CCACGT), it may not be bound by other TFs, therefore making the signalling long-lasting, and transcriptional efficiency of stress-responsive genes (including the transcription co-factor CBP) is improved instantaneously.
Redox regulation of thylakoid protein kinases and photosynthetic gene expression.
  • J. Rochaix
  • Environmental Science, Biology
    Antioxidants & redox signaling
  • 2013
TLDR
This work has shown that the phosphorylation status of the light-harvesting proteins of photosystem II and its core proteins is mainly determined by two complementary kinase-phosphatase pairs corresponding to STN7/PPH1 and STN8/PBCP, respectively.
Plant Immunity Requires Conformational Charges of NPR1 via S-Nitrosylation and Thioredoxins
TLDR
It is reported that S-nitrosylation of NPR1 by S-Nitrosoglutathione at cysteine-156 facilitates its oligomerization, which maintains protein homeostasis upon SA induction, and suggest a link between pathogen-triggered redox changes and gene regulation in plant immunity.
FORCA, a promoter element that responds to crosstalk between defense and light signaling
TLDR
It is proposed that FORCA is a regulatory cis-element that is present in a wide variety of Arabidopsis promoters and integrates light- and defense-related signals and participates in adjusting the transcriptome to changes in environmental conditions.
Global Changes in Gene Expression in Response to High Light in Arabidopsis1,212
TLDR
Exposure of Arabidopsis to HL caused an increase in known antioxidant genes, as well as several unknown genes, and a range of chaperones were up-regulated in the HL treatment and that this induction was specifically due to the HL stress.
ROS as key players in plant stress signalling.
TLDR
This review will provide an update of recent findings related to the integration of ROS signals with an array of signalling pathways aimed at regulating different responses in plants and address signals that confer systemic acquired resistance (SAR) or systemic acquired acclimation (SAA) in plants.
...
...