Plants for waste water treatment--effects of heavy metals on the detoxification system of Typha latifolia.
Upon treatment with Cd and As cattail (Typha latifolia) showed induced catalase, monodehydroascorbate reductase and ascorbate peroxidase activities in leaves but strong inhibition in rhizomes. Peroxidase activity in leaves of the same plants was inhibited whereas linear increase was detected after Cd treatment in rhizomes. Glutathione S-transferase measurements resulted in identical effects of the trace elements on the substrates CDNB, DCNB, NBC, NBoC, fluorodifen. When GST was assayed with the model substrate DCNB, a different pattern of activity was observed, with strongly increasing activities at increasing HM concentrations. Consequently, to improve the success rates, future phytoremediation plans need to preselect plant species with high antioxidative enzyme activities and an alert GST pattern capable of detoxifying an array of organic xenobiotics.
Helmholtz Zentrum München German Research Center for Environmental Health, Department Microbe-Plant Interactions, Ingolstädter Landstr. 1, D-85764 Neuherberg, Germany.
Lyudmila
L
Lyubenova
Peter
P
Schröder
D000975:Antioxidants / Q000378:metabolism; D001673:Biodegradation, Environmental / Q000187:drug effects; D005982:Glutathione Transferase / Q000378:metabolism; D019216:Metals, Heavy / Q000633:toxicity*; D009578:Nitrobenzenes / Q000378:metabolism; D010860:Pigments, Biological / Q000378:metabolism; D018515:Plant Leaves / Q000187:drug effects / Q000201:enzymology; D027343:Rhizome / Q000187:drug effects / Q000201:enzymology; D032401:Typhaceae / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
D000975:Antioxidants; D019216:Metals, Heavy; D009578:Nitrobenzenes; D010860:Pigments, Biological; C036077:nitrobenzene; D005982:Glutathione Transferase