Regulation of cAMP-mediated photosignaling by a phytochrome in the cyanobacterium Anabaena cylindrica.
Changes in cellular adenosine 3',5'-cyclic monophosphate (cAMP) content induced by monochromatic light of various wavelengths were determined in the cyanobacterium Anabaena cylindrica. Irradiation with monochromatic red light caused a rapid decrease in cAMP content. In contrast, far-red light caused a rapid increase in its content. The effects of red and far-red light were reversible, suggesting the involvement of a prototype phytochrome as the photoreceptor for cAMP-mediated light-responsive signal transduction.
Ohmori
Masayuki
M
Department of Biology, Graduate School of Arts and Sciences, University of Tokyo, Komaba, Japan. cohmori@mail.ecc.u-tokyo.ac.jp
Terauchi
Kazuki
K
Okamoto
Shinobu
S
Watanabe
Masakatu
M
D017033:Anabaena / Q000378:metabolism* / Q000528:radiation effects; D000242:Cyclic AMP / Q000378:metabolism* / Q000528:radiation effects; D007700:Kinetics; D008027:Light; D010834:Phytochrome / Q000378:metabolism* / Q000528:radiation effects
D010834:Phytochrome; D000242:Cyclic AMP