Liberation of ammonia by cyanobacteria
Conference
·
· Plant Physiol.; (United States)
OSTI ID:5431686
Photoheterotrophic nitrogen-fixing cyanobacteria release ammonia when treated with methionine sulfoximine (MSX) to inhibit nitrogen incorporation into protein. This released ammonia can be derived from recently fixed nitrogen (nitrogen atmosphere) or endogenous reserves (argon atmosphere). Anaerobic ammonia release requires light and is stimulated by the photosystem II herbicides DCMU and Atrazine, regardless of the source of ammonia. As much as one quarter of the total cellular nitrogen can be released as ammonia by cyanbacteria treated with MSX and DCMU under argon in light. Chromatography of cell extracts indicates that virtually all cellular proteins are degraded. DCMU and Atrazine, at very low concentration, inhibit sustained uptake of the ammonia analog /sup 14/C methylamine. These data indicate that the herbicides interrupt ammonia uptake and retention by the cells, and support a role for photosystem II in ammonia metabolism.
- Research Organization:
- Dept. of Agriculture, Peoria, IL
- OSTI ID:
- 5431686
- Conference Information:
- Journal Name: Plant Physiol.; (United States) Journal Volume: 80:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Light-dependent degradation of the D1 protein in photosystem II is accelerated after inhibition of the water splitting reaction
Degradation of the 32 kD herbicide binding protein in far red light. [Spirodella oligorrhiza]
Factors affecting the photoproduction of ammonia from dinitrogen and water by the cyanobacterium Anabaena sp. strain ATCC 33047
Journal Article
·
Tue Jul 03 00:00:00 EDT 1990
· Biochemistry; (USA)
·
OSTI ID:6143294
Degradation of the 32 kD herbicide binding protein in far red light. [Spirodella oligorrhiza]
Journal Article
·
Mon Jun 01 00:00:00 EDT 1987
· Plant Physiol.; (United States)
·
OSTI ID:6071047
Factors affecting the photoproduction of ammonia from dinitrogen and water by the cyanobacterium Anabaena sp. strain ATCC 33047
Journal Article
·
Tue Mar 31 23:00:00 EST 1987
· Biotechnol. Bioeng.; (United States)
·
OSTI ID:6526332
Related Subjects
550701 -- Microbiology-- Tracer Techniques
560302* -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIA
BIOLOGICAL EFFECTS
CARBON 14 COMPOUNDS
CHEMICAL REACTIONS
CYANOBACTERIA
HERBICIDES
HYDRIDES
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
METABOLISM
MICROORGANISMS
NITROGEN COMPOUNDS
NITROGEN FIXATION
NITROGEN HYDRIDES
PESTICIDES
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
SYNTHESIS
TRACER TECHNIQUES
UPTAKE
560302* -- Chemicals Metabolism & Toxicology-- Microorganisms-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIA
BIOLOGICAL EFFECTS
CARBON 14 COMPOUNDS
CHEMICAL REACTIONS
CYANOBACTERIA
HERBICIDES
HYDRIDES
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
METABOLISM
MICROORGANISMS
NITROGEN COMPOUNDS
NITROGEN FIXATION
NITROGEN HYDRIDES
PESTICIDES
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
SYNTHESIS
TRACER TECHNIQUES
UPTAKE