Circadian and Diurnal Calcium Oscillations Encode Photoperiodic Information in Arabidopsis | Zendy

John Love | Zendy; Antony N. Dodd | Zendy; Alex Webb | Zendy

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Circadian and Diurnal Calcium Oscillations Encode Photoperiodic Information in Arabidopsis

Author(s) -

John Love,

Antony N. Dodd,

Alex Webb

Publication year - 2004

Publication title -

the plant cell

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.324

H-Index - 341

eISSN - 1532-298X

pISSN - 1040-4651

DOI - 10.1105/tpc.020214

Subject(s) - circadian rhythm , arabidopsis , encode , calcium , arabidopsis thaliana , photoperiodism , biology , period (music) , biophysics , microbiology and biotechnology , botany , chemistry , gene , biochemistry , physics , endocrinology , mutant , acoustics , organic chemistry

We have tested the hypothesis that circadian oscillations in the concentration of cytosolic free calcium ([Ca2+]cyt) can encode information. We imaged oscillations of [Ca2+]cyt in the cotyledons and leaves of Arabidopsis (Arabidopsis thaliana) that have a 24-h period in light/dark cycles and also constant light. The amplitude, phase, and shape of the oscillations of [Ca2+]cyt and [Ca2+]cyt at critical daily time points were controlled by the light/dark regimes in which the plants were grown. These data provide evidence that 24-h oscillations in [Ca2+]cyt encode information concerning daylength and light intensity, which are two major regulators of plant growth and development.

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