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Plant Immunity Requires Conformational Charges of NPR1 via S-Nitrosylation and Thioredoxins
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.
NPR3 and NPR4 are receptors for the immune signal salicylic acid in plants
It is shown that the NPR1 paralogues NPR3 and NPR4 are SA receptors that bind SA with different affinities, and that this mutant is defective in pathogen effector-triggered programmed cell death and immunity.
Proteasome-Mediated Turnover of the Transcription Coactivator NPR1 Plays Dual Roles in Regulating Plant Immunity
It is shown that turnover of nuclear NPR1 protein plays an important role in modulating transcription of its target genes and establishment of SAR.
Timing of plant immune responses by a central circadian regulator
Surprisingly, it is found that these new defence genes are under circadian control by CCA1, allowing plants to ‘anticipate’ infection at dawn when the pathogen normally disperses the spores and time immune responses according to the perception of different pathogenic signals upon infection.
Regulation of water, salinity, and cold stress responses by salicylic acid
The effects of SA on the water stress responses and regulation of stomatal closure are reviewed.
The HSF-like Transcription Factor TBF1 Is a Major Molecular Switch for Plant Growth-to-Defense Transition
- Karolina M Pajerowska-Mukhtar, W. Wang, +4 authors Xinnian Dong
- Medicine, BiologyCurrent Biology
- 24 January 2012
Genome-wide expression profiling indicates that TBF1 plays a key role in the growth-to-defense transition and can sense the metabolic changes upon pathogen invasion and trigger the specific transcriptional reprogramming through its target genes expression.
A receptor-like cytoplasmic kinase targeted by a plant pathogen effector is directly phosphorylated by the chitin receptor and mediates rice immunity.
- K. Yamaguchi, Kenta Yamada, +12 authors T. Kawasaki
- Biology, MedicineCell host & microbe
- 13 March 2013
A role for OsRLCK185 is supported as an essential immediate downstream signaling partner of OsCERK1 in mediating chitin- and peptidoglycan-induced plant immunity and pathogen resistance.
Posttranslational Modifications of the Master Transcriptional Regulator NPR1 Enable Dynamic but Tight Control of Plant Immune Responses.
It is shown that sumoylation of NPR1 by SUMO3 activates defense gene expression by switching NPR1's association with the WRKY transcription repressors to TGA transcription activators, which triggers NPR1 degradation, rendering the immune induction transient.
Mitochondrial oxidative burst involved in apoptotic response in oats.
- N. Yao, Y. Tada, +4 authors S. Mayama
- Biology, MedicineThe Plant journal : for cell and molecular…
- 1 June 2002
Findings indicate possible involvement of mitochondria, especially mitochondrial-derived ROS generation, as an important regulator in controlling apoptotic cell death in oats.
The Arabidopsis CERK1‐associated kinase PBL27 connects chitin perception to MAPK activation
- Kenta Yamada, K. Yamaguchi, +18 authors T. Kawasaki
- Biology, MedicineThe EMBO journal
- 27 September 2016
A complete phospho‐signaling transduction pathway from PRR‐mediated pathogen recognition to MAPK activation in plants is identified and genetic evidence suggests that phosphorylation of MAPKKK5 by PBL27 is essential for chitin‐induced MAPKactivation in plants.