Tissue-Biased and Species-Specific Regulation of Glutathione Peroxidase () Genes in Scallops Exposed to Toxic Dinoflagellates.

Marine bivalves could accumulate paralytic shellfish toxins (PSTs) produced by toxic microalgae, which might induce oxidative stress. Glutathione peroxidases (GPxs) are key enzymes functioning in the antioxidant defense, whereas our understanding of their roles in PST challenge in bivalves is limited. Herein, through genome-wide screening, we identified nine () and eight () genes in Zhikong scallop () and Yesso scallop (), respectively, and revealed the expansion of GPx3 sub-family in both species.