Fluoride effects on chlorophyll biosynthesis in Nicotiana tabacum
Journal Article
·
· Fluoride; (United States)
OSTI ID:6331255
The effect of fluoride and chloride at different concentrations (0, 10 )2$M, 10 TM, 10 SM) was studied on the incorporation of UC-sigma-aminolevulinic acid (ALA) into coproporphyrin and protoporphyrin fractions, and ether-extractable pigments (chlorophyll a and pheophytin a) in tobacco leaf discs. Both chloride and fluoride at concentrations of 10 U to 10 S M inhibited the incorporation of ALA into chlorophyll a and pheophytin a. At 10 SM the effect of fluoride on ALA incorporation was greater than that of chloride. The inhibition on formation of pheophytin a by fluoride was similar to that found on chlorophyll a indicating an effect on synthesis of chlorophyll rather than degradation. The effect of fluoride on individual enzymes in the chlorophyll biosynthetic pathway is discussed in relation to the action of fluoride on cellular ultrastructure. 30 references, 2 tables.
- OSTI ID:
- 6331255
- Journal Information:
- Fluoride; (United States), Journal Name: Fluoride; (United States) Vol. 7:2; ISSN FLUOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550501 -- Metabolism-- Tracer Techniques
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMINO ACIDS
AMINOLEVULINIC ACID
BIOLOGICAL EFFECTS
BIOSYNTHESIS
CARBON 14 COMPOUNDS
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
CHLOROPHYLL
DATA
ECOLOGICAL CONCENTRATION
ENZYMES
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
INHIBITION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LEAVES
MORPHOLOGICAL CHANGES
NICOTIANA
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYTOCHROMES
PIGMENTS
PLANTS
PORPHYRINS
SYNTHESIS
TRACER TECHNIQUES
ULTRASTRUCTURAL CHANGES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMINO ACIDS
AMINOLEVULINIC ACID
BIOLOGICAL EFFECTS
BIOSYNTHESIS
CARBON 14 COMPOUNDS
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
CHLOROPHYLL
DATA
ECOLOGICAL CONCENTRATION
ENZYMES
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
INHIBITION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LEAVES
MORPHOLOGICAL CHANGES
NICOTIANA
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYTOCHROMES
PIGMENTS
PLANTS
PORPHYRINS
SYNTHESIS
TRACER TECHNIQUES
ULTRASTRUCTURAL CHANGES