Adaptive differences in gene expression associated with stress tolerance in the soil arthropod Orchesella cincta

ABSTRACT: Field-selected tolerance to heavy metals has been reported for Orchesella cincta (Arthropoda: Collembola) populations occurring at metal-contaminated mining sites. This tolerance is correlated with heritable increase of metal excretion efficiency; less pronounce cadmium induced growth reduction and, over-expression of the metallothionein gene. We applied transcriptomics to determine differential gene expression caused by this abiotic stress in reference and cadmium tolerant populations. Many cDNAs responded to cadmium exposure in a reference population. Significantly fewer clones were cadmium responsive in tolerant animals. Analysis of variance revealed transcripts that interact between cadmium exposure and population. Hierarchical clustering of these clones revealed two major groups. The

ORGANISM(S): Orchesella cincta

SUBMITTER: Dick Roelofs 

PROVIDER: E-GEOD-14076 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress