Effects of Hg and As on the mycelial growth of Qilingu and their accumulation

The accumulation of heavy metals in mycelia of Qilingu and the effects of heavy metals on the growth of this fungus were investigated.The results showed that mycelia of Qilingu strongly concentrated Hg and As.When the heavy metals concentration in media were 0.5-5.0mg·kg-1,Hg and As content in mycelia were 2.24-11.68 and 4.06-9.92 times higher than that in media respectively.Hg inhibited mycelia growth significantly,0.5 mg·kg-1 of Hg inhibited mycelia growth rate by 36.03%.Whereas,As promoted mycelia growth in the concentrations of 0.5-5.0 mg·kg-1.