Circadian gating of dark-induced increases in chloroplast- and cytosolic-free calcium in Arabidopsis.

ABSTRACT: Changes in the spatiotemporal concentration of free Ca²⁺ ([Ca²⁺ ]) in different organelles of the cell contribute to responses of plants to physiological and environmental stimuli. One example are [Ca²⁺ ] increases in the stroma of chloroplasts during light-to-dark transitions; however, the function and mechanisms responsible are unknown, in part because there is a disagreement in the literature concerning whether corresponding dark-induced changes in cytosolic [Ca²⁺ ] ([Ca²⁺ ]_cyt ) can be detected. We have measured changes in [Ca²⁺ ]_cyt upon darkness in addition to the already known dark-induced increases in [Ca²⁺ ]_stroma in the aerial part of the Arabidopsis thaliana plant. These

SUBMITTER: Marti Ruiz MC 

PROVIDER: S-EPMC7028143 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature