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.
read more
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.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Experimental validation of the mechanism of stomatal development diversification
Yuki Doll,Hiroyuki Koga,Hirokazu Tsukaya +2 more
TL;DR: The molecular mechanisms underlying stomatal development diversification are experimentally validated in Arabidopsis, supporting the model based on the genus Callitriche.
10
Mitogen activated protein kinase 6 and MAP kinase phosphatase 1 are involved in the response of Arabidopsis roots to L-glutamate.
Jesús Salvador López-Bucio,Javier Raya-González,Gustavo Ravelo-Ortega,León Francisco Ruiz-Herrera,Maricela Ramos-Vega,Patricia León,José López-Bucio,Ángel Arturo Guevara-García +7 more
TL;DR: It is demonstrated that a MAPK module is involved in the control of root developmental responses to l-Glu, an amino acid with neurotransmitter functions in animals that inhibits root growth, but the underlying genetic mechanisms are poorly understood.
10
SIAMESE-RELATED1 imposes differentiation of stomatal lineage ground cells into pavement cells
Marieke Dubois,Ignacio Achon,Robert A. Brench,Stefanie Polyn,Rubén Tenorio-Berrío,Ilse Vercauteren,Julie E. Gray,Dirk Inzé,Lieven De Veylder +8 more
TL;DR: It is revealed that the cell cycle inhibitor SIAMESE-RELATED1 (SMR1) is essential for timely differentiation of SLGCs into pavement cells by terminating SLGC self-renewal potency, which depends on CYCLin A proteins and CYCLIN-DEPENDENT KINASE B1.
10
Comparative transcriptome combined with transgenic analysis reveal the involvement of salicylic acid pathway in the response of Nicotiana tabacum to triclosan stress.
Danliu Peng,Wenjing Wang,Anran Liu,Yue Zhang,Xiaozhou Li,Gang Wang,Chao Jin,Chunfeng Guan,Jing Ji +8 more
TL;DR: In this article, the authors evaluated the physiological and biochemical indexes of tobacco with treatment of different concentrations of TCS and found that tobacco plants with TCS treatment exhibited lower germination rate, root development, photosynthesis efficiency, and higher ROS accumulation in comparison with control group.
10
The evolution and expression of stomatal regulators in C3 and C4 crops: Implications on the divergent drought tolerance
TL;DR: In this article , the authors used the genome sequences of maize, sorghum, and sugarcane to explore the association of the stomatal response to drought stress with the evolution of the key stomato regulators.
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.
Stomatal Development and Patterning Are Regulated by Environmentally Responsive Mitogen-Activated Protein Kinases in Arabidopsis
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.