AtMYB44regulatesWRKY70expression and modulates antagonistic interaction between salicylic acid and jasmonic acid signaling

2012 ◽  
Vol 73 (3) ◽  
pp. 483-495 ◽  
Author(s):  
Jae Sung Shim ◽  
Choonkyun Jung ◽  
Sangjoon Lee ◽  
Kyunghun Min ◽  
Yin-Won Lee ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Antagonistic Interaction ◽  
Jasmonic Acid Signaling

Feeding by Whiteflies Suppresses Downstream Jasmonic Acid Signaling by Eliciting Salicylic Acid Signaling

2013 ◽  
Vol 39 (5) ◽  
pp. 612-619 ◽  
Author(s):  
Peng-Jun Zhang ◽  
Wei-Di Li ◽  
Fang Huang ◽  
Jin-Ming Zhang ◽  
Fang-Cheng Xu ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Jasmonic Acid Signaling ◽  
Salicylic Acid Signaling

Investigating interactions of salicylic acid and jasmonic acid signaling pathways in monocots wheat

2016 ◽  
Vol 93 ◽  
pp. 67-74 ◽  
Author(s):  
Li-Na Ding ◽  
Guo-Xing Yang ◽  
Rui-Ying Yang ◽  
Jun Cao ◽  
Yang Zhou
Keyword(s):  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Signaling Pathways ◽  
Jasmonic Acid Signaling

scholarly journals Salicylic Acid Suppresses Jasmonic Acid Signaling Downstream of SCFCOI1-JAZ by Targeting GCC Promoter Motifs via Transcription Factor ORA59

2013 ◽  
Vol 25 (2) ◽  
pp. 744-761 ◽  
Author(s):  
Dieuwertje Van der Does ◽  
Antonio Leon-Reyes ◽  
Annemart Koornneef ◽  
Marcel C. Van Verk ◽  
Nicole Rodenburg ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Jasmonic Acid Signaling

scholarly journals The Arabidopsis mediator complex subunit 8 regulates oxidative stress responses

2021 ◽  
Author(s):  
Huaming He ◽  
Jordi Denecker ◽  
Katrien Van Der Kelen ◽  
Patrick Willems ◽  
Robin Pottie ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Gene Expression ◽  
Salicylic Acid ◽  
Jasmonic Acid ◽  
Stress Responses ◽  
Negative Regulator ◽  
Mediator Complex ◽  
Defense Gene Expression ◽  
A Genome ◽  
Oxidative Stress Responses

Abstract Signaling events triggered by hydrogen peroxide (H2O2) regulate plant growth and defense by orchestrating a genome-wide transcriptional reprogramming. However, the specific mechanisms that govern H2O2-dependent gene expression are still poorly understood. Here, we identify the Arabidopsis Mediator complex subunit MED8 as a regulator of H2O2 responses. The introduction of the med8 mutation in a constitutive oxidative stress genetic background (catalase-deficient, cat2) was associated with enhanced activation of the salicylic acid pathway and accelerated cell death. Interestingly, med8 seedlings were more tolerant to oxidative stress generated by the herbicide methyl viologen (MV) and exhibited transcriptional hyperactivation of defense signaling, in particular salicylic acid- and jasmonic acid-related pathways. The med8-triggered tolerance to MV was manipulated by the introduction of secondary mutations in salicylic acid and jasmonic acid pathways. In addition, analysis of the Mediator interactome revealed interactions with components involved in mRNA processing and microRNA biogenesis, hence expanding the role of Mediator beyond transcription. Notably, MED8 interacted with the transcriptional regulator NEGATIVE ON TATA-LESS, NOT2, to control the expression of H2O2-inducible genes and stress responses. Our work establishes MED8 as a component regulating oxidative stress responses and demonstrates that it acts as a negative regulator of H2O2-driven activation of defense gene expression.

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