Metabolic changes in free amino acids of bean leaves exposed to ozone

Journal Article · Fri Sep 01 04:00:00 EDT 1967 · Phytopathology; (United States)

OSTI ID:5830236

Tomlinson, H; Rich, S

Leaves of bean, tobacco, beet, corn, barley, or rye that are visibly damaged by ozone accumulate several common free amino acids. Shorter periods of ozonation, which do not cause visible damage to the leaves, produce more specific metabolic responses: ..gamma..-amino-n-butyric acid (GABA) and alanine increase, and glutamic acid decreases. To our knowledge this is the first report on changes in amino acid metabolism effected by ozone fumigation. The pattern of amino acid labeling and fixation of CO/sub 2/ by ozonated plants suggests a complex process of enhanced decarboxylation of glutamic acid, and inhibited photosynthesis and protein synthesis. These effects could result from the oxidation of essential sulfhydryl groups and increased membrane permeability. 12 references, 2 tables.

• Research Organization: Connecticut Agricultural Experiment Station, New Haven
• OSTI ID: 5830236
• Journal Information: Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 57; ISSN PHYTA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALANINES
AMINO ACIDS
BARLEY
BEANS
BEETS
BIOLOGICAL EFFECTS
BIOSYNTHESIS
CARBOXYLIC ACIDS
CEREALS
CHEMICAL REACTIONS
FOOD
GLUTAMIC ACID
GRASS
INHIBITION
MAIZE
METABOLISM
NICOTIANA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
PROTEINS
RYE
SYNTHESIS
VEGETABLES