The strong induction of metallothionein gene following cadmium exposure transiently affects the expression of many genes in Eisenia fetida: A trade-off mechanism?

Subcellular partitioning of metals in Aporrectodea caliginosa along a gradient of metal exposure in 31 field-contaminated soils

“…It is likely that MT proteins were not yet produced in sufficient quantities to chelate all internalized Cd, and that the remaining internalized Cd accumulated in the insoluble fraction. Previous studies have demonstrated a rapid induction of the mt gene in earthworms exposed to contaminated soils (Brulle et al, 2006(Brulle et al, , 2007Bernard et al, 2010). The induction of mt was mostly assessed in Eisenia fetida and kinetics aspect of gene induction might be very different between the two species.…”

Growth Inhibition and Altered Gene Transcript Levels in Earthworms (Eisenia fetida) Exposed to 2,2′,4,4′-Tetrabromodiphenyl Ether

“…Mortality and growth inhibition of earthworms (E. fetida) have been verified as effective indicators in a variety of reports (Shi et al 2007;Wu et al 2011;Xie et al 2011). As a sensitive indicator, gene transcript level has been used in assessing toxic effects of toxicants to earthworms (E. fetida) (Asensio et al 2007;Brulle et al 2007Brulle et al , 2008Zheng et al 2008). Antioxidant enzymes, such as SOD, CAT, and glutathione transferase (GST) can protect organisms from oxidative damage by removing reactive oxygen species (ROS).…”

Gene expression responses in Suaeda salsa after cadmium exposure

“…Interestingly, as time elapsed, 50 μg L -1 of cadmium had no more significant effect on gene transcription of MIPS at the third sampling time-point. It maybe imply an adaptive cadmium-tolerance mechanism emerging in S. salsa to avoid extra damage, since strong induction of some stress-irritable factors could trade off other important functions of organisms (Brulle et al 2007). Alternatively, other heavy metal chelators such as phytochelatin, metallothionein-like protein would be induced significantly by a higher concentration (50 μg L -1 ) of cadmium exposure (Tran and Popova 2013).…”