Light-controlled Stem Elongation in Pea Seedlings Grown under Varied Light Conditions 1
AUTOR(ES)
Elliott, William M.
RESUMO
There appears to be an orderly transition from one photosensitive state to another in light-controlled stem elongation in the garden pea, Pisum sativum L. cv. Alaska. Stem elongation in dark-grown plants is known to be phytochrome-controlled. However, seedlings are insensitive to phytochrome after a red light pretreatment. An action spectrum for inhibition in these seedlings has peaks at 440 and 620 nm. Protochlorophyll is suggested as the photoreceptor. If these red pretreated seedlings are further exposed to white light, sensitivity to 440 to 620 nm light is lost. Promotion by blue-green light is the only photoresponse shown by these seedlings. Inhibition of completely white light-grown seedlings required simultaneous exposure to high intensity blue light and 600 nm light.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=541379Documentos Relacionados
- Light-controlled Leaf Expansion in Peas Grown under Different Light Conditions 1
- Polysome Formation in Light-controlled Dormancy
- Characterization of a Light-Controlled Anion Channel in the Plasma Membrane of Mesophyll Cells of Pea.
- Cryptochromes, Phytochromes, and COP1 Regulate Light-Controlled Stomatal Development in Arabidopsis[W]
- CUE1: A Mesophyll Cell-Specific Positive Regulator of Light-Controlled Gene Expression in Arabidopsis.