Phytochrome-mediated rapid changes of cyclic AMP in mustard seedlings (Sinapis albaL.)
โ Scribed by B. Janistyn; H. Drumm
- Publisher
- Springer-Verlag
- Year
- 1975
- Tongue
- English
- Weight
- 304 KB
- Volume
- 125
- Category
- Article
- ISSN
- 0032-0935
No coin nor oath required. For personal study only.
โฆ Synopsis
A 5-min red light pulse which operates exclusively through phytochrome leads to a strong but transient decrease of the level of cAMP in the cotyledons of the mustard seedling. The strongest response is observed approximately 30 min after the red light pulse. In the axis system (hypocotyl plus taproot) the red light pulse causes a rapid but modest increase of the cAMP contents. The question of whether the observed changes of the tissue contents of cAMP can be regarded as intermediate steps in the causal sequence between Pfr (far-red absorbing form of phytochrom) and some photoresponses is discussed.
๐ SIMILAR VOLUMES
Density-labelling with deuterium oxide has been used to distinguish preexisting from newly made ascorbate oxidase (EC 1.10.3.3) molecules in cotyledons of the mustard seedling (Sinapis alba L.). The time course of the change in bandwidth of isopycnically banded enzyme, taken together with the accomp
Phytochrome, activated by continuous red light, increases the amount of total polyadenylated RNA during photomorphogenesis of mustard (Sinapis alba L.) cotyledons. In-vitro translation of total polyadenylated RNA in a reticulocyte translation system has shown that the activity of translatable fl-amy