Guard Cell Signal Transduction Network: Advances in Understanding Abscisic Acid, CO2, and Ca2+ Signaling

By Tae-Houn Kim, M. Böhmer, Honghong Hu, N. Nishimura, J. Schroeder. Annual Review of Plant Biology, 2010

1,328 citations recorded by the source corpus.

Stomatal pores are formed by pairs of specialized epidermal guard cells and serve as major gateways for both CO2 influx into plants from the atmosphere and transpirational water loss of plants. Because they regulate stomatal pore apertures via integration of both endogenous hormonal stimuli and environmental signals, guard cells have been highly developed as a model system to dissect the dynamics and mechanisms of plant-cell signaling. The stress hormone ABA and elevated levels of CO2 activate complex signaling pathways in guard cells that are mediated by kinases/phosphatases, secondary messengers, and ion channel regulation. Recent research in guard cells has led to a new hypothesis for how plants achieve specificity in intracellular calcium signaling: CO2 and ABA enhance (prime) the calcium sensitivity of downstream calcium-signaling mechanisms. Recent progress in identification of early stomatal signaling components are reviewed here, including ABA receptors and CO2-binding response proteins, as well as systems approaches that advance our understanding of guard cell-signaling mechanisms.

Subfields: Molecular Biology, Plant Science

View Paper: https://www.semanticscholar.org/paper/96f62c0d7603ae2a59d17cae98c02759b40081d6

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Citations in the corpus

Hydrogen peroxide priming modulates abiotic oxidative stress tolerance: insights from ROS detoxification and scavenging (2015, background): “It was reported that H2O2 is an essential signal in mediating stomatal closure induced by ABA via activation of Ca-permeable channels in the plasma membrane under a variety of abiotic stresses, such as drought and salinity (Pei et al., 2000; Neill et al., 2002; Kim et al., 2010).”
Molecular Basis of the Core Regulatory Network in ABA Responses: Sensing, Signaling and Transport (2010, background): “This is reasonable because calcium ions are well-known second messengers in intercellular signal transduction in guard cells ( Kim et al. 2010 ).”
Recent Advances in Photosynthesis Under Drought and Salinity (2011, background): “1) (Kim et al., 2010).”
The role of ABA and MAPK signaling pathways in plant abiotic stress responses. (2014, background): “, 2009), which is consistent with the findings that NADPH oxidases function in early ABA-mediated ROS signaling (Kim et al., 2010; Kwak et al., 2003).”
Effects of abiotic stress on plants: a systems biology perspective (2011, background): “ABA is a central regulator of many plant responses to environmental stresses, particularly osmotic stresses [9,34-36].”
Role of Plant Transcription Factors in Abiotic Stress Tolerance (2011, background): “The phytohormone ABA is the central regulator of abiotic stress particularly drought resistance in plants, and coordinates a complex gene regulatory network enabling plants to cope with decreased water availability (Cutler et al., 2010; Kim et al., 2010).”
Plant abiotic stress response and nutrient use efficiency (2020, background): “The increased Ca2+ activates CPKs and CBLs (Kim et al., 2010).”
Stomatal Responses to Drought Stress and Air Humidity (2011, background): “2 Active stomatal closure ABA as well as elevated levels of CO2 activates signalling pathways leading to stomatal closure (Kim et al., 2010).”
Abscisic Acid and Abiotic Stress Tolerance in Crop Plants (2016, background): “…increased under drought or salinity stress conditions, stimulating stomatal closure, change in gene expression, and adaptive physiological responses (Seki et al., 2002; Yamaguchi-Shinozaki and Shinozaki, 2006; Shinozaki and Yamaguchi-Shinozaki, 2007; Cutler et al., 2010; Kim et al., 2010).”
Roles of osmoprotectants in improving salinity and drought tolerance in plants: a review (2015, background): “During drought stress, anions and cations, such as Cl- and K?, water transport systems in the plasma membrane and tonoplast induce turgor pressure changes in guard cells, which result into stomatal closure (Kim et al. 2010).”