The HT1 protein kinase is essential for red light-induced stomatal opening and genetically interacts with OST1 in red light and CO2 -induced stomatal movement responses. Matrosova, A., Bogireddi, H., Mateo-Penas, A., Hashimoto-Sugimoto, M., Iba, K., Schroeder, J. I., & Israelsson-Nordstrom, M. New Phytol, 208(4):1126–37, December, 2015. Edition: 2015/07/21![The HT1 protein kinase is essential for red light-induced stomatal opening and genetically interacts with OST1 in red light and CO2 -induced stomatal movement responses [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The question of whether red light-induced stomatal opening is mediated by a photosynthesis-derived reduction in intercellular [CO2 ] (Ci ) remains controversial and genetic analyses are needed. The Arabidopsis thaliana protein kinase HIGH TEMPERATURE 1 (HT1) is a negative regulator of [CO2 ]-induced stomatal closing and ht1-2 mutant plants do not show stomatal opening to low [CO2 ]. The protein kinase mutant ost1-3 exhibits slowed stomatal responses to CO2 . The functions of HT1 and OPEN STOMATA 1 (OST1) to changes in red, blue light or [CO2 ] were analyzed. For comparison we assayed recessive ca1ca4 carbonic anhydrase double mutant plants, based on their slowed stomatal response to CO2 . Here, we report a strong impairment in ht1 in red light-induced stomatal opening whereas blue light was able to induce stomatal opening. The effects on photosynthetic performance in ht1 were restored when stomatal limitation of CO2 uptake, by control of [Ci ], was eliminated. HT1 was found to interact genetically with OST1 both during red light- and low [CO2 ]-induced stomatal opening. Analyses of ca1ca4 plants suggest that more than a low [Ci ]-dependent pathway may function in red light-induced stomatal opening. These results demonstrate that HT1 is essential for red light-induced stomatal opening and interacts genetically with OST1 during stomatal responses to red light and altered [CO2 ].
@article{matrosova_ht1_2015,
title = {The {HT1} protein kinase is essential for red light-induced stomatal opening and genetically interacts with {OST1} in red light and {CO2} -induced stomatal movement responses},
volume = {208},
issn = {1469-8137 (Electronic) 0028-646X (Linking)},
shorttitle = {The},
url = {https://www.ncbi.nlm.nih.gov/pubmed/26192339},
doi = {10.1111/nph.13566},
abstract = {The question of whether red light-induced stomatal opening is mediated by a photosynthesis-derived reduction in intercellular [CO2 ] (Ci ) remains controversial and genetic analyses are needed. The Arabidopsis thaliana protein kinase HIGH TEMPERATURE 1 (HT1) is a negative regulator of [CO2 ]-induced stomatal closing and ht1-2 mutant plants do not show stomatal opening to low [CO2 ]. The protein kinase mutant ost1-3 exhibits slowed stomatal responses to CO2 . The functions of HT1 and OPEN STOMATA 1 (OST1) to changes in red, blue light or [CO2 ] were analyzed. For comparison we assayed recessive ca1ca4 carbonic anhydrase double mutant plants, based on their slowed stomatal response to CO2 . Here, we report a strong impairment in ht1 in red light-induced stomatal opening whereas blue light was able to induce stomatal opening. The effects on photosynthetic performance in ht1 were restored when stomatal limitation of CO2 uptake, by control of [Ci ], was eliminated. HT1 was found to interact genetically with OST1 both during red light- and low [CO2 ]-induced stomatal opening. Analyses of ca1ca4 plants suggest that more than a low [Ci ]-dependent pathway may function in red light-induced stomatal opening. These results demonstrate that HT1 is essential for red light-induced stomatal opening and interacts genetically with OST1 during stomatal responses to red light and altered [CO2 ].},
language = {en},
number = {4},
urldate = {2021-06-07},
journal = {New Phytol},
author = {Matrosova, A. and Bogireddi, H. and Mateo-Penas, A. and Hashimoto-Sugimoto, M. and Iba, K. and Schroeder, J. I. and Israelsson-Nordstrom, M.},
month = dec,
year = {2015},
note = {Edition: 2015/07/21},
keywords = {*Genes, Plant, *Light, *Plant Stomata, Arabidopsis Proteins/*genetics/metabolism, Arabidopsis thaliana, Arabidopsis/*genetics/metabolism, Carbon Dioxide/*metabolism, High temperature 1 (ht1), Mutation, Open stomata 1 (ost1), Photosynthesis/*genetics, Protein Kinases/*genetics/metabolism, Signal Transduction, low [CO2], photosynthesis, red light, stomata},
pages = {1126--37},
}
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The functions of HT1 and OPEN STOMATA 1 (OST1) to changes in red, blue light or [CO2 ] were analyzed. For comparison we assayed recessive ca1ca4 carbonic anhydrase double mutant plants, based on their slowed stomatal response to CO2 . Here, we report a strong impairment in ht1 in red light-induced stomatal opening whereas blue light was able to induce stomatal opening. The effects on photosynthetic performance in ht1 were restored when stomatal limitation of CO2 uptake, by control of [Ci ], was eliminated. HT1 was found to interact genetically with OST1 both during red light- and low [CO2 ]-induced stomatal opening. Analyses of ca1ca4 plants suggest that more than a low [Ci ]-dependent pathway may function in red light-induced stomatal opening. 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