Selenium (Se) is an essential micronutrient for mammals and certain algae, although the difference between deficient, essential, and toxic doses of Se is small. To ensure the adequate daily Se intake while avoiding the toxic effects of excessive intake, it is important to obtain a safe and efficient dietary Se supplement.Assunção et al. (2014) have shown that a variety of edible fungi have strong ability to accumulate Se, and eventually convert exogenous Se into organic forms (mainly as SeMet). Therefore, edible fungi can be an important food crop for Se biofortification.