Impacts and tolerance responses of Coprinus comatus and Pleurotus cornucopiae on cadmium contaminated soil.
Large amounts of cadmium (Cd) have been discharged into soil with the rapid development of industry. In this study, we revealed the impacts of Coprinus comatus (C. comatus) and Pleurotus cornucopiae (P. cornucopiae) on soil and the tolerance responses of macrofungi in the presence of Cd by the analysis of soil biochemical properties and macrofungi growth indexes. Results showed that with the cultivation of C. comatus and P. cornucopiae, the HOAc-extractable Cd in soil individually reduced by 9.53% and 11.35%, the activities of soil urease, acid phosphatase, dehydrogenase, and Fluorescein diacetate (FDA) hydrolysis increased by 18.11-101.45%, 8.39-18.24%, 9.37-55.50% and 28.94-41.92%, respectively. Meanwhile, different soil bacterial communities were observed with various macrofungi cultivations. Also, Cd accumulation significantly enhanced the macrofungi antioxidant enzyme activities, which increased by 24.10-45.43%, 30.11-61.53% and 7.03-26.81% for catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) activities in the macrofungi, respectively. Moreover, the enhanced macrofungi endophytic bacterial diversities with Cd existence was firstly observed in the present experiment. These findings revealed the possible Cd resistance mechanisms in macrofungi, suggesting C. comatus and P. cornucopiae were promising ameliorators for Cd contaminated soil.
['Wang|Ying|Y|', 'Wang|Xitong|X|', 'Lan|Weiqi|W|', 'Wei|Yuming|Y|', 'Xu|Fei|F|', 'Xu|Heng|H|']
D000222:Adaptation, Physiological D000975:Antioxidants D001419:Bacteria D001673:Biodegradation, Environmental D002104:Cadmium D002374:Catalase D003302:Coprinus D020076:Pleurotus D012987:Soil D012989:Soil Pollutants
Coprinus comatus Pleurotus cornucopiae Cadmium Soil Biological response Endophytic bacteria