Arabidopsis stomatal initiation is controlled by MAPK-mediated regulation of the bHLH SPEECHLESS.
TL;DR: It is found that a unique domain in a basic helix-loop-helix (bHLH) stomatal initiating factor, SPEECHLESS, renders it a MAPK phosphorylation target in vitro and modulates its function in vivo.
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Abstract: Stomata, epidermal structures that modulate gas exchange between plants and the atmosphere, play critical roles in primary productivity and the global climate. Positively acting transcription factors and negatively acting mitogen-activated protein kinase (MAPK) signaling control stomatal development in Arabidopsis; however, it is not known how the opposing activities of these regulators are integrated. We found that a unique domain in a basic helix-loop-helix (bHLH) stomatal initiating factor, SPEECHLESS, renders it a MAPK phosphorylation target in vitro and modulates its function in vivo. MAPK cascades modulate a diverse set of activities including development, cell proliferation, and response to external stresses. The coupling of MAPK signaling to SPEECHLESS activity provides cell type specificity for MAPK output while allowing the integration of multiple developmental and environmental signals into the production and spacing of stomata.
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Citations
Characterization of phenotypic traits related to loss-of-function and ectopic expression of bHLH093 and bHLH061 in Arabidopsis thaliana
TL;DR: The role of bHLH proteins in stomatal development in Arabidopsis thaliana has been investigated in recent literature as discussed by the authors , with a focus on the role of gene regulation of development.
MUSTACHES regulates bilateral symmetry in stomata
Sandra Roshini Keerthisinghe
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TL;DR: Results suggest that regulation of stomatal symmetry likely mediated via microtubule organization and dynamics is mediated viaMicrotubules in mus are disrupted prior to pore thickening and no evidence that other cytoskeletal and endomembrane components are polarized in wild-type or mus.
Identification of proteins that putatively bind the promoter of the stomatal master regulator gene, MUTE
Anthony F. Williams
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TL;DR: This review discusses the aims, methods, and results of a systematic literature review on comparative literature review of comparative literature on the basis of known facts and beetle infestation.
References
Mitogen-Activated Protein Kinase: Conservation of a Three-Kinase Module From Yeast to Human
TL;DR: All known MAPK module kinases from yeast to humans are defined, what is known about their regulation, defined MAPK substrates, and the function of MAPK in cell physiology are defined.
2.8K
MAP kinase signalling cascade in Arabidopsis innate immunity
Tsuneaki Asai,Guillaume Tena,Joulia Plotnikova,Matthew R. Willmann,Wan-Ling Chiu,Lourdes Gómez-Gómez,Thomas Boller,Frederick M. Ausubel,Jen Sheen +8 more
TL;DR: An Arabidopsis thaliana leaf cell system based on the induction of early-defence gene transcription by flagellin, a highly conserved component of bacterial flagella that functions as a PAMP in plants and mammals is developed, suggesting that signalling events initiated by diverse pathogens converge into a conserved MAPK cascade.
2.7K
The role of stomata in sensing and driving environmental change.
TL;DR: Stomatal morphology, distribution and behaviour respond to a spectrum of signals, from intracellular signalling to global climatic change, which results from a web of control systems reminiscent of a ‘scale-free’ network, whose untangling requires integrated approaches beyond those currently used.
2.3K
Functional analysis of oxidative stress-activated mitogen-activated protein kinase cascade in plants.
TL;DR: The authors showed that H2O2 is a potent activator of mitogen-activated protein kinases (MAPKs) in Arabidopsis leaf cells using epitope tagging and a protoplast transient expression assay.
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TL;DR: It is reported that Arabidopsis MITOGEN-ACTIVATED PROTEIN KINASE3 (MPK3) and MPK6, two environmentally responsive mitogen-activated protein kinases (MAPK) and their upstream MAPK kinases, MKK4 and MKK5, are key regulators of stomatal development and patterning.