The Arabidopsis Ca²⁺-dependent protein kinase CPK27 is required for plant response to salt-stress

Gene
Rui ZhaoShaoliang Chen

Abstract

Ca(2+)-dependent protein kinases (CDPKs) play vital roles in plant adaptations to environmental challenges. The precise regulatory mechanism of CDPKs in mediating salt stress still remains unclear, although several CDPK members have been identified to be involved in salt stress accumulation in various plants, such as Arabidopsis thaliana and Oryza sativa. Here, we investigated the function of an Arabidopsis CDPK, CPK27, in salt stress-signaling. CPK27 is a membrane-localized protein kinase; its expression was induced by NaCl. cpk27-1, a T-DNA insertion mutant of CPK27, was much more sensitive to salt stress than wild-type plants in terms of seed germination and post-germination seedling growth. In ion-flux assay, cpk27-1 mutants exhibited a lower capacity than wild-type plants to extrude Na(+) and import H(+) after a long-term salt treatment (110mM NaCl for 10days). Moreover, the content of Na(+) was higher and K(+) was lower in cpk27-1 mutants than in wild-type plants under salt stress. In addition, the level of salt-elicited H2O2 production was higher in cpk27-1 mutants than in wild-type plants Col after a short-term NaCl shock and long-term salt treatment. Collectively, our results suggest that CPK27 is required for plant ad...Continue Reading

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Citations

Apr 28, 2016·Journal of Experimental Botany·Andrea SimeunovicMarkus Teige
Jul 13, 2016·Environmental Science and Pollution Research International·Isela Victoria Arámburo-Miranda, Emmanuel Hammurabi Ruelas-Ramírez
Sep 14, 2016·Frontiers in Plant Science·Katie A WilkinsJulia M Davies
Dec 19, 2018·International Journal of Molecular Sciences·Huilong ZhangShaoliang Chen
Aug 2, 2019·The New Phytologist·Tiffany Yip Delormel, Marie Boudsocq
Oct 28, 2019·International Journal of Molecular Sciences·Rana Muhammad AtifGyuhwa Chung
Feb 19, 2021·Frontiers in Plant Science·Petr DvořákTomáš Takáč

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