| It is an emerging research field of bioremediation that heavy metals are enriched by edible fungi. We try to understand the effects of cadmium（Cd） on mycelium growth and yield of Pleurotus djamor, as well as the enrichment and removal rate of Cd by edible fungi P. djamor in present paper. Therefore, the P. djamor were cultivated on culture medium adding Cd with different concentration including 0 mg·kg-1, 1.0 mg·kg-1, 2.0 mg·kg-1, 10.0 mg·kg-1, 20.0 mg·kg-1 and 100.0 mg·kg-1. The results showed that the mycelium growth became slower and average yield reduced significantly with Cd concentration increasing. However, it also indicated that the P. djamor were well tolerant on Cd stress. On the other hand, Cd content of first and second flush reached 18 mg·kg-1 and 85.61 mg·kg-1 respectively in 100 mg·kg-1 Cd culture medium, comparing with 3.58 mg·kg-1 and 9.51 mg·kg-1 in 1.0 mg·kg-1 Cd culture medium, indicating strong Cd enrichment ability of P. djamor and the enrichment increased gradually with the increasing levels of Cd in the culture medium. The gross removal rates of Cd by P. djamor cultured in 1 mg·kg-1, 2 mg·kg-1, 100 mg·kg-1 Cd medium were 69.78%, 36.61% and 6.04% respectively, indicating higher Cd removal rate with lower Cd medium of P. djamor. Therefore, we conclude that the P. djamor could well tolerant to Cd stress and was a good edible fungi for bioremediation to remove Cd, especially for low Cd concentration contamination. |
