Synergistic Action of Ultraviolet-B Radiation and Cadmium on the Growth of Wheat Seedlings

The increase in ground level UV-B radiation as a result of stratospheric ozone depletion may have major deleterious effects on crop photosynthesis and productivity. Plants are exposed to UV-B and other xenobiotics simultaneously in today's industrialized world. The present studies were undertak...

Full description

Saved in:
Bibliographic Details
Published in:Ecotoxicology and environmental safety 2002-02, Vol.51 (2), p.90-96
Main Authors: Shukla, Umesh C, Joshi, Prakash C, Kakkar, Poonam
Format: Article
Language:English
Subjects:
Amino Acids - analysis
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
cadmium
Cadmium - toxicity
Chlorophyll - analysis
dual stress
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Environment, Controlled
Environmental Pollutants - toxicity
Fundamental and applied biological sciences. Psychology
growth pattern
Plant Proteins - biosynthesis
Plant Structures
Starch - biosynthesis
Triticum - drug effects
Triticum - growth & development
Triticum - radiation effects
Triticum aestivum
Triticum aestivum L
Ultraviolet Rays
ultraviolet-B radiation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The increase in ground level UV-B radiation as a result of stratospheric ozone depletion may have major deleterious effects on crop photosynthesis and productivity. Plants are exposed to UV-B and other xenobiotics simultaneously in today's industrialized world. The present studies were undertaken to see the effect of dual stress of UV-B and Cd2+ exposure on the growth of wheat (Triticum aestivum L.) seedlings. The plants grown in 0.25, 0.5, 1.0, 2.5, and 5.0 ppm Cd2+-supplemented medium were exposed to UV-B for 30 min (2 J, 0.4 mW/cm2) per day. After 5 and 10 days of treatment the combined stress of UV-B and Cd2+ resulted in reduction of biomass yield, growth, and chlorophyll content and changes in protein, free amino acid, starch, and total reducing sugar content. These data support the assumption that UV-B may have a regulatory role besides damaging effects and that an increased UV-B environment will likely increase this regulatory influence of UV-B radiation. The results also indicate that the adverse effects of one stress may be modulated in the presence of other stresses.
ISSN:0147-6513
1090-2414
DOI:10.1006/eesa.2001.2136