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H2S inhibited the opening of stomata under cold stress, which required the participation of MPK4. In conclusion, MPK4 is a downstream component of H2S-related cold-stress resistance, and H2S and MPK4 both regulated the cold response genes and stomatal movement to response the cold stress.
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Proteome changes associated with MPK4 and MPK6 deficiency in Arabidopsis roots.
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AvrRpt2 specifically blocks the flagellin-induced activation of MPK4.
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Data show that MPK4 phosphorylation of MYB75 increases its stability and is essential for light-induced anthocyanin accumulation. Our findings reveal an important role for a MAPK pathway in light signal transduction.
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ASR3 functions as a transcriptional repressor regulated by microbe-associated molecular patterns-activated MPK4 to fine-tune plant immune gene expression.
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Mitogen-activated protein kinase 4 is a salicylic acid-independent regulator of growth but not of photosynthesis in Arabidopsis
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Treatment of Arabidopsis with a membrane rigidifier, DMSO, causes MPK4 activation concomitantly with MEKK1 and MKK2 phosphorylation.
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Data indicate that MEKK2 is required for the mekk1, mkk1 mkk2, and mpk4 autoimmune phenotypes.
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Arabidopsis MPK4 can interact with and be phosphorylated by the cytokinesis-related MAP kinase kinase, AtMKK6.
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MPK4 activity was found to compromise effector-triggered immunity conditioned by the Toll Interleukin-1 Receptor-nucleotide binding (NB)-Leu-rich repeat (LRR) receptors RPS4 and RPP4 but not by the coiled coil-NB-LRR receptors RPM1 and RPS2.
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Data suggest that the MEKK1-MKK1/MKK2-MPK4 kinase cascade negatively regulates MEKK2 and activation of MEKK2 triggers SUMM2-mediated immune responses.
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Findings show that seedling survival of prolonged oxygen deprivation was improved in transgenics that ectopically overexpress MPK3, MPK4 and MPK6.
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MKS1 function and subcellular location requires an intact N-terminus important for both MPK4 and WRKY33 interactions
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MPK4 is shown to be involved in the regulation of mitosis/cytokinesis through modulation of the cell division plane and cytokinetic progression.
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These results indicate that MPK4 is the downstream target of MKK6/ANQ in the regulation of cytokinesis in Arabidopsis and that MPK11 is also involved in cytokinesis.
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ANP2/ANP3, MPK4, and the MT-associated protein MAP65-1 are involved in microtubule-dependent cell growth mechanisms.
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Pseudomonas syringae effector protein AvrB interacts with Arabidopsis MPK4 and the HSP90 chaperone, and AvrB induces MPK4 activation in a manner promoted by HSP90
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The susceptibility of A. thaliana plants to Alternaria brassicicola that induces defensive pathways via EDS1 and PAD4 is reported.
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MEKK1 is essential for activation of MPK4 and negatively regulates temperature-sensitive and tissue-specific cell death and H(2)O(2) accumulation that are dependent on both RAR1 (resistance protein function) and SID2 (isochorismate synthase)
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This study demonstrated that analysis of plants carrying T-DNA knockout alleles indicated that MEKK1 is required for flg22-induced activation of MPK4.
