%0 Journal Article %1 karimi2021under %A Karimi, S. M. %A Freund, M. %A Wager, B. M. %A Knoblauch, M. %A Fromm, J. %A H, M. Mueller %A Ache, P. %A Krischke, M. %A Mueller, M. J. %A Muller, T. %A Dittrich, M. %A Geilfus, C. M. %A Alfarhan, A. H. %A Hedrich, R. %A Deeken, R. %D 2021 %J New Phytol %K Abscisic Acid myOwn uni_network %N 3 %P 1040-1055 %R 10.1111/nph.17376 %T Under salt stress guard cells rewire ion transport and abscisic acid signaling %U https://www.ncbi.nlm.nih.gov/pubmed/33774818 %V 231 %X Soil salinity is an increasingly global problem which hampers plant growth and crop yield. Plant productivity depends on optimal water-use efficiency and photosynthetic capacity balanced by stomatal conductance. Whether and how stomatal behavior contributes to salt sensitivity or tolerance is currently unknown. This work identifies guard cell-specific signaling networks exerted by a salt-sensitive and salt-tolerant plant under ionic and osmotic stress conditions accompanied by increasing NaCl loads. We challenged soil-grown Arabidopsis thaliana and Thellungiella salsuginea plants with short- and long-term salinity stress and monitored genome-wide gene expression and signals of guard cells that determine their function. Arabidopsis plants suffered from both salt regimes and showed reduced stomatal conductance while Thellungiella displayed no obvious stress symptoms. The salt-dependent gene expression changes of guard cells supported the ability of the halophyte to maintain high potassium to sodium ratios and to attenuate the abscisic acid (ABA) signaling pathway which the glycophyte kept activated despite fading ABA concentrations. Our study shows that salinity stress and even the different tolerances are manifested on a single cell level. Halophytic guard cells are less sensitive than glycophytic guard cells, providing opportunities to manipulate stomatal behavior and improve plant productivity.

@article{karimi2021under, abstract = {Soil salinity is an increasingly global problem which hampers plant growth and crop yield. Plant productivity depends on optimal water-use efficiency and photosynthetic capacity balanced by stomatal conductance. Whether and how stomatal behavior contributes to salt sensitivity or tolerance is currently unknown. This work identifies guard cell-specific signaling networks exerted by a salt-sensitive and salt-tolerant plant under ionic and osmotic stress conditions accompanied by increasing NaCl loads. We challenged soil-grown Arabidopsis thaliana and Thellungiella salsuginea plants with short- and long-term salinity stress and monitored genome-wide gene expression and signals of guard cells that determine their function. Arabidopsis plants suffered from both salt regimes and showed reduced stomatal conductance while Thellungiella displayed no obvious stress symptoms. The salt-dependent gene expression changes of guard cells supported the ability of the halophyte to maintain high potassium to sodium ratios and to attenuate the abscisic acid (ABA) signaling pathway which the glycophyte kept activated despite fading ABA concentrations. Our study shows that salinity stress and even the different tolerances are manifested on a single cell level. Halophytic guard cells are less sensitive than glycophytic guard cells, providing opportunities to manipulate stomatal behavior and improve plant productivity.}, added-at = {2024-02-15T15:08:22.000+0100}, author = {Karimi, S. M. and Freund, M. and Wager, B. M. and Knoblauch, M. and Fromm, J. and H, M. Mueller and Ache, P. and Krischke, M. and Mueller, M. J. and Muller, T. and Dittrich, M. and Geilfus, C. M. and Alfarhan, A. H. and Hedrich, R. and Deeken, R.}, biburl = {https://www.bibsonomy.org/bibtex/289f8f724299cddc3a15c874240ee0106/jvsi_all}, doi = {10.1111/nph.17376}, interhash = {36e12394a7c2525f730e0bb43853b45a}, intrahash = {89f8f724299cddc3a15c874240ee0106}, issn = {1469-8137 (Electronic) 0028-646X (Linking)}, journal = {New Phytol}, keywords = {Abscisic Acid myOwn uni_network}, note = {Karimi, Sohail M Freund, Matthias Wager, Brittney M Knoblauch, Michael Fromm, Jorg M Mueller, Heike Ache, Peter Krischke, Markus Mueller, Martin J Muller, Tobias Dittrich, Marcus Geilfus, Christoph-Martin Alfarhan, Ahmed H Hedrich, Rainer Deeken, Rosalia eng Research Support, Non-U.S. Gov't England 2021/03/29 New Phytol. 2021 Aug;231(3):1040-1055. doi: 10.1111/nph.17376. Epub 2021 Jun 16.}, number = 3, pages = {1040-1055}, timestamp = {2024-02-15T15:11:55.000+0100}, title = {Under salt stress guard cells rewire ion transport and abscisic acid signaling}, type = {Journal Article}, url = {https://www.ncbi.nlm.nih.gov/pubmed/33774818}, volume = 231, year = 2021 }