Circadian and Diurnal Calcium Oscillations Encode Photoperiodic Information in Arabidopsis
AUTOR(ES)
Love, John
FONTE
American Society of Plant Biologists
RESUMO
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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=412869Documentos Relacionados
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