| .红平菇（Pleurotus djamor）的镉耐性及其对镉去除能力的研究[J].农业环境科学学报,2013,32(5):. |
| 红平菇（Pleurotus djamor）的镉耐性及其对镉去除能力的研究 |
| Tolerance and Removal Ability of Pleurotus djamor on Cadmium |
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| DOI：10.11654/jaes.2013.05.013 |
| 中文关键词: 红平菇 Cd 耐性 去除能力 |
| 英文关键词: Pleurotus djamor Cd tolerance removal ability |
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| 摘要点击次数: 2036 |
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| 中文摘要: |
| 食用菌富集重金属是生物修复的一个重要研究方向。在培养料中投放不同浓度的重金属镉（0、1.0、2.0、10.0、20.0、100.0 mg·kg-1 Cd）并做栽培试验，研究了Cd对红平菇菌丝体生长、子实体产量的影响及红平菇对培养料中Cd的去除能力。结果显示，培养料中初始Cd浓度越大，菌丝体的生长速度越慢，尽管两潮菇子实体平均产量有显著下降，但仍具有较好的Cd耐性。红平菇具有很强的Cd富集能力，并且Cd浓度越高，富集量越高，当Cd浓度从1 mg·kg-1增加到100 mg·kg-1时，一、二潮菇的子实体中Cd富集量分别从3.58 mg·kg-1和9.51 mg·kg-1增加到了18 mg·kg-1和85.61 mg·kg-1。红平菇对培养料中Cd的去除率随Cd浓度的增加而降低，当Cd浓度为1 mg·kg-1和2 mg·kg-1时总去除率高达69.78%和36.61%，100 mg·kg-1时去除率为6.04%。红平菇的Cd耐性较好，并对培养料中低浓度的Cd有较好的去除能力。 |
| 英文摘要: |
| 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. |
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