Evidence of regulation of calcium uptake by phytochrome in maize protoplasts.
Red light stimulated calcium uptake in maize leaf protoplasts upto 140% over the dark control. The stimulation was maximally noticed after 120 seconds of incubation and was reversed by far red light. 5-Hydroxytryptamine also enhanced calcium uptake in dark, upto the red level. A possible role of phosphoinositide for signal transduction in calcium uptake for phytochrome mediated responses in higher plants is suggested.
D001693:Biological Transport, Active / Q000187:drug effects / Q000528:radiation effects; D002118:Calcium / Q000378:metabolism*; D008027:Light; D010834:Phytochrome / Q000494:pharmacology*; D010940:Plant Proteins / Q000494:pharmacology*; D010944:Plants / Q000378:metabolism*; D011523:Protoplasts / Q000378:metabolism; D012701:Serotonin / Q000494:pharmacology; D003313:Zea mays / Q000378:metabolism
D010940:Plant Proteins; D010834:Phytochrome; D012701:Serotonin; D002118:Calcium