Effects of cadmium concentration on ozone-induced phytotoxicity in cress
Cadmium solutions at concentrations of 0, 10, 40, 100, 500 or 1000 ppm were applied to the soil around cress (Lepidium sativum L. cv. Fine Curled) every 4th day for several weeks. Four week old plants were fumigated once at ozone levels of 0, 5, 10, 20, 25 or 30-35 pphm for 6 hours. Plants that had received higher concentrations of cadmium showed markedly increased sensitivity to ozone in terms of visible leaf damage after ozone treatment. Plants receiving cadmium solution alone or those receiving ozone treatment alone either did not show leaf damage or as much leaf damage as plants which had received both treatments. Mineral analyses of plant tissues showed the relationship between tissue content of both essential and toxic cations and the sensitivity of the plant to various ozone levels. Pigment analyses showed changes in chlorophyll amounts and ratios between treatments. Statistical analyses of data for morphological parameters showed that there is an interaction between Cd and ozone treatments over a range of concentrations.
- Research Organization:
- Univ. of Guelph, Ontario
- OSTI ID:
- 5003218
- Journal Information:
- Plant Physiol., Suppl.; (United States), Journal Name: Plant Physiol., Suppl.; (United States) Vol. 53; ISSN PPYSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effects of ozone on the growth and reproduction of grasses
Impact of ozone on understory plants of the aspen zone
Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BODY
CADMIUM
CARBOXYLIC ACIDS
CATIONS
CHARGED PARTICLES
CHLOROPHYLL
DOSE-RESPONSE RELATIONSHIPS
ECOLOGICAL CONCENTRATION
ELEMENTS
HERBS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
IONS
LEAVES
METALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OZONE
PHYTOCHROMES
PIGMENTS
PLANT TISSUES
PLANTS
PORPHYRINS
SENSITIVITY
SOILS
SYNERGISM
TISSUES
TOXICITY