Effect of lead toxicity on aquatic macrophyte Elodea canadensis Michx.
Effects of Pb accumulation on the contents of chlorophylls (a and b), carotenoid, ascorbic acid (AsA), non-protein SH groups and protein were investigated in aquatic macrophyte Elodea canadensis. Pb accumulation in E. canadensis tissues increased with increasing metal concentrations. The increases at 1, 10 and 100 mg/L Pb are about 12.0, 44.6 and 71.1 times greater than control, respectively. Contents of chlorophylls, carotenoid and protein were adversely affected by Pb accumulation. Induction of non-protein SH groups and AsA showed that Pb accumulation caused oxidative stress. It is also possible that increased non-protein SH groups by Pb accumulation may be due to their role in Pb detoxification.
Department of Biology, Faculty of Arts and Sciences, University of Gaziantep, 27310, Gaziantep, Turkey. doganm@gantep.edu.tr
Muhittin
M
Dogan
Saadet Demirors
SD
Saygideger
Ugur
U
Colak
D001205:Ascorbic Acid / Q000378:metabolism; D002338:Carotenoids / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D000077194:Chlorophyll A; D031321:Hydrocharitaceae / Q000187:drug effects* / Q000378:metabolism; D007854:Lead / Q000378:metabolism / Q000633:toxicity*; D018384:Oxidative Stress / Q000187:drug effects; D010940:Plant Proteins / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity*
D010940:Plant Proteins; D014874:Water Pollutants, Chemical; D002734:Chlorophyll; D007854:Lead; D002338:Carotenoids; C037184:chlorophyll b; D001205:Ascorbic Acid; D000077194:Chlorophyll A