Transcriptional responses of heat shock protein 70 (Hsp70) to thermal, bisphenol A, and copper stresses in the dinoflagellate Prorocentrum minimum

► Toxicogenomic response of Hsp70 in the dinoflagellate Prorocentrum minimum. ► Putative PmHsp70 contained three signature patterns of the Hsp70 family. ► EC50s are 1.1 mg L−1 copper and 1.5 mg L−1 biophenol A in P. minimum. ► PmHsp70 was significantly upregulated by thermal, Cu, and BPA exposures. ► Demonstration of the Hsp70 response in the dinoflagellate to thermal and toxic stress.