Effects of fluorides on the chlorophyll content of leaves
Little is known about the effects of the fluoride ion on the physiological functions of plants, and especially about the effects of the fluoride ion on leaf chlorophyll content. This evident dearth of knowledge on the subject prompted the following investigation: the chlorophyll content of controlled, nutrient-grown plants subjected to a known partial fluoride atmosphere was measured and quantitatively compared to the chlorophyll content of non-exposed plants. The leaf chlorophyll content was measured according to the method mentioned by Arnon. Atmospheric fluorides reduced significantly the amount of total leaf chlorophyll, increased the chlorophyll a/chlorophyll b ratio, and decelerated the rate of chlorophyll extraction. Also, the effect of atmospheric fluorides on the leaf chlorophyll content varied according to the relative age of the leaf tissue.
- Research Organization:
- Univ. of Utah, Salt Lake City
- OSTI ID:
- 5194261
- Journal Information:
- Proc. Utah Acad. Sci., Arts, Lett.; (United States), Journal Name: Proc. Utah Acad. Sci., Arts, Lett.; (United States) Vol. 34; ISSN UASPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL EFFECTS
BIOLOGICAL FUNCTIONS
CARBOXYLIC ACIDS
CATIONS
CHARGED PARTICLES
CHLOROPHYLL
FLUORIDES
FLUORINE COMPOUNDS
FUNCTIONS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
IONS
KINETICS
LEAVES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHYSIOLOGY
PHYTOCHROMES
PIGMENTS
PORPHYRINS
REACTION KINETICS