Elodea nuttallii transcriptomic response to mercury, monomethyl-mercury, copper and UV-B radiation

The mechanisms of metal accumulation and toxicity in primary producers are not well understood. In a previous study (deposited in ArrayExpress archive under accession E-MTAB-892), we generated a dataset giving a fist insight into transcriptomic response of the aquatic macrophyte Elodea nuttallii to Hg and Cd exposure. In the present study we aimed to extend this investigation to different Hg-species, dose-response effects and multiple stress exposure. We therefore investigated the transcriptomic response of Elodea nuttallii to Hg, methyl-Hg, Cu and ultraviolet-B (UV-B) exposure. We applied different concentrations of Hg and methyl-Hg in order to study dose-response effects. Combined exposures of Hg and UV-B were conducted in order to assess interaction effects of multiple factors. Plants were exposed up to 24 h, RNA was extracted using Tri reagent, libraries prepared according to Illumina standard protocols and sequencing was done on Illumina HiSeq 2000. After quality check, raw sequence reads were assembled into contigs. About 160 Mbp assembled sequence information were generated in this study.