Interfacial effect of Stropharia rugoso-annulata in liquid medium: interaction of exudates and nickel-quintozene
文献类型： 外文期刊
作者： Xiao, Kemeng 1 ; Liu, Hongying 1 ; Dong, Shunwen 2 ; Fan, Xinzou 1 ; Chen, Yanli 1 ; Xu, Heng 1 ;
作者机构： 1.Sichuan Univ, Coll Life Sci, Key Lab Bioresources & Ecoenvironm, Minist Educ, Chengdu 610064, Sichuan, Peoples R China
2.Sichuan Acad Agr Sci, Ind Crop Res Inst, Chengdu 610300, Sichuan, Peoples R China
期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）
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年卷期：
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收录情况： SCI
摘要： This work investigated the accumulation of nickel (Ni) and dissipation of quintozene (PCNB) by the mycelia of Stropharia rugoo-annulata (S. rugoo-annulata), together with the correlation between cell exudates and contaminants removal in liquid medium. Results showed that the removal rates of PCNB accounted for 20.75-55.26% and 42.39-90.92% of the initial concentration (125 mg kg(-1)) in un-inoculated and inoculated media, respectively. Ni accumulation in mycelia of S. rugoo-annulata at the end of experiment was 81.09 mg kg(-1) when the initial concentration of Ni was 30 mg L-1 in polluted media, among which the proportion of NaCl-extractable (56.34%) was dominant. These results showed that PCNB and Ni were remarkably removed by mycelia incubation. The concentrations of cell exudates (macromolecular substances, low-weight-molecular organic acids (LMWOAs), liglinolytic enzymes) were quite different in both polluted and natural media inoculated with S. rugoo-annulata, indicating that the production of exudates was closely related to PCNB and Ni. Besides, the results of scanning electron microscopy (SEM) and diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS) demonstrated that the pollutants influenced the surface phenotypic structure but not for basic cell structures, implying mycelia of S. rugoo-annulata could well tolerate the pollutants. Our results suggested the presence of S. rugoo-annulata was effective in promoting the bioremediation of Ni-PCNB and laid the foundation for a better understanding of the mechanism about contaminant removal by mushroom.
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