Tomato root: site of initial alteration in minor elements in cadmium treated plants

Journal Article · Fri Jan 01 04:00:00 EST 1982 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1982.10465377· OSTI ID:5400562

Clark, B; Harkov, R; Brennan, E

Tomato plants treated with 0.25 and 0.75 ppm Cd for one month exhibited no visual symptoms of toxicity, nor was the percent dry weight of leaf, stem, or root tissue altered. Cadmium concentrations in treated plants generally followed the trend: roots > leaves > stems. At such concentrations too low to cause phytotoxicity, cadmium altered the minor element concentration in tomato plants. The first changes occurred in the Mn and Fe concentrations of the roots. The reduction of these elements in the root may signal an early event in the mechanisms of Cd toxicity. To test the hypothesis that the root represents the primary site of injury from Cd, a kinetic study should be conducted in which root and shoot tissues are analyzed for Cd and the minor elements as the plants progress from an asymptomatic condition to one of severe Cd toxicity. (JMT)

• Research Organization: New Jersey Agricultural Experimental Station, New Brunswick
• OSTI ID: 5400562
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 32:1; ISSN JPCAA
• 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.
BIOLOGICAL EFFECTS
CADMIUM
ELEMENTS
FOOD
IRON
LEAVES
MANGANESE
METALS
PLANT STEMS
QUANTITY RATIO
ROOTS
TOMATOES
TRANSITION ELEMENTS
UPTAKE
VEGETABLES