Degradation of the 32 kD herbicide binding protein in far red light. [Spirodella oligorrhiza]
Journal Article
·
· Plant Physiol.; (United States)
OSTI ID:6071047
White light (400-700 nanometers) supports the activity of photosystem I (PSI) and photosystem II while far red light (greater than or equal to700 nanometers) supports PSI almost exclusively. In intact fronds of Spirodela oligorrhiza, turnover of the 32 kilodaltons herbicide binding protein is stimulated under both these light conditions, although not in the dark or at wavelengths > 730 nanometers. As is the case in white light, the far red light induced degradation of the protein is inhibited by DCMU. The means by which far red light operates is unclear. Hypotheses considered include: PSI activated proteolysis, PSI-induced formation of semiquinone anions, and PSI-generated free radicals.
- Research Organization:
- Weizmann Institute of Science, Rehovat, Israel
- OSTI ID:
- 6071047
- Journal Information:
- Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 84:2; ISSN PLPHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
551001* -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
CATABOLISM
CHEMICAL REACTIONS
DAYS LIVING RADIOISOTOPES
DECOMPOSITION
ELECTROMAGNETIC RADIATION
EVEN-ODD NUCLEI
HERBS
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
MEMBRANES
METABOLISM
NUCLEI
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHOTOSYNTHETIC MEMBRANES
PHYSIOLOGY
PLANTS
PROTEINS
PROTEOLYSIS
RADIATIONS
RADIOISOTOPES
SULFUR 35
SULFUR ISOTOPES
SYNTHESIS
TRACER TECHNIQUES
VISIBLE RADIATION
59 BASIC BIOLOGICAL SCIENCES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
CATABOLISM
CHEMICAL REACTIONS
DAYS LIVING RADIOISOTOPES
DECOMPOSITION
ELECTROMAGNETIC RADIATION
EVEN-ODD NUCLEI
HERBS
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LIGHT NUCLEI
MEMBRANES
METABOLISM
NUCLEI
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHOTOSYNTHETIC MEMBRANES
PHYSIOLOGY
PLANTS
PROTEINS
PROTEOLYSIS
RADIATIONS
RADIOISOTOPES
SULFUR 35
SULFUR ISOTOPES
SYNTHESIS
TRACER TECHNIQUES
VISIBLE RADIATION