affected
by the substrates used in their growth (Shashirekha, Rajarathnam,
& Bano, 2005). For instance, yields and chemical
composition are enhanced by adding essential elements, such as
Se, to the substrate. Addition of sodium selenite to the substrate
used for growing Ganoderma lucidum resulted in a proportional increase
of Se content in the mushrooms (Zhao et al., 2004).