Induction of cadmium tolerance in two clones of Daphnia magna straus.
1. The abilities of two different genotypes of Daphnia magna to develop cadmium resistance through physiological adaptation, after pre-exposure to sublethal concentrations of Cd, Zn and Cd/Zn mixtures, was investigated. 2. The induced elevation in cadmium tolerance was shown to be associated with an increase in the body concentration of metallothionein-like proteins. 3. The highly significant difference in acute responses to cadmium between the two clones reduced after pre-exposure. 4. Differences in cadmium tolerance were shown to be associated with differences in cadmium uptake.
Department of Animal and Plant Sciences, University of Sheffield, U.K.
A
A
Stuhlbacher
M C
MC
Bradley
C
C
Naylor
P
P
Calow
D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism; D002104:Cadmium / Q000378:metabolism / Q000494:pharmacology*; D003621:Daphnia / Q000187:drug effects* / Q000235:genetics; D004361:Drug Tolerance / Q000502:physiology; D014644:Genetic Variation / Q000235:genetics*; D005838:Genotype; D008668:Metallothionein / Q000096:biosynthesis*; D015032:Zinc / Q000378:metabolism
D002104:Cadmium; D008668:Metallothionein; D015032:Zinc