Effects of atmospheric fluoride on metabolic constituents of tomato and bean leaves
Time-course experiments were run in order to determine the effect of continuous 24-hour fumigation with hydrogen fluoride (12.4 p.p.b. v/v and 1.3 p.p.b. v/v) on the dry weight, fluoride content, and levels of free amino acids and amides, nonvolatile organic acids, free sugars, ribo-(RNA) and deoxyribonucleic (DNA) acids, and chlorophylls a and b in leaf tissues of Bonny Best tomato and Tendergreen bean plants. During fumigation plants were harvested at 3-day intervals for 9 days. This was followed by a recovery period during which plants were again harvested at the same intervals. In general, it was found that during fumigation at 12.4 p.p.b. v/v there was a reduced growth of tomato leaves, although this trend was reversed by the end of the recovery period. In beans there was a small but consistent reduction in yield of leaves. The total fluoride content and the fluoride concentration of both tomato and bean leaf tissues decreased during the recovery period. The free sugar content of leaves was reduced in both species during the fumigation and recovery period. In general, nonvolatile organic acids increased after 3 days of fumigation. During the post-exposure period the organic acid level recovered and, in tomatoes, again exceeded that of the control. Hydrogen fluoride fumigation had a slight inhibitory effect on formation of chlorophyll a and b of leaf tissues, but no inhibition was evident by the end of the recovery period. In a separate experiment respiration was stimulated in tomato and bean leaves by 67 and 72%, respectively, by hydrogen fluoride fumigation for 8 days at 1.6 p.p.b. v/v. 55 references, 4 figures, 5 tables.
- Research Organization:
- Boyce Thompson Institute for Plant Research, Inc., Yonkers, NY
- OSTI ID:
- 6372334
- Journal Information:
- Contrib. Boyce Thompson Inst.; (United States), Vol. 21:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
FLUORIDES
METABOLISM
HERBS
PLANT GROWTH
PHASEOLUS
AIR POLLUTION
BIOLOGICAL ACCUMULATION
CHLOROPHYLL
DNA
ECOLOGICAL CONCENTRATION
EXPERIMENTAL DATA
HYDROFLUORIC ACID
LEAVES
ORGANIC ACIDS
RNA
BACTERIA
CARBOXYLIC ACIDS
DATA
FLUORINE COMPOUNDS
GROWTH
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
LEGUMINOSAE
MICROORGANISMS
NUCLEIC ACIDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYTOCHROMES
PIGMENTS
PLANTS
POLLUTION
PORPHYRINS
RHIZOBIUM
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)