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Detoxification and simultaneous removal of phenolic xenobiotics and heavy metals with endocrine-disrupting activity by the non-ligninolytic fungus Umbelopsis isabellina
Journal of Hazardous Materials ( IF 13.6 ) Pub Date : 2018-08-16 , DOI: 10.1016/j.jhazmat.2018.08.047
Tomasz Janicki , Jerzy Długoński , Mariusz Krupiński

Organic and inorganic pollutants well known to interfere with the major functions of the endocrine system co-occur widely in contaminated ecosystems. The aim of the study was to evaluate the ability of Umbelopsis isabellina fungus to simultaneously remove and detoxify multiple environmentally significant endocrine disruptors: the heavy metals Cd(II), Zn(II), Mn(II), Pb(II) and Ni(II) and the phenolic xenobiotics nonylphenol (t-NP), 4-cumylphenol (CP) and 4-tert-octylphenol (4-t-OP). The effects of the metals on fungal growth and efficiency of single-metal uptake were also investigated. U. isabellina exhibited considerable tolerance to Zn(II), Mn(II), Pb(II) and Ni(II), with IC50/24 values ranging from 5.08 for Ni(II) to 13.1 mM for Zn(II). In the presence of CP, the maximum efficiency of Pb(II) removal increased 25 % relative to that of the control. Supplementation with Mn(II) or Zn(II) enhanced the 4-t-OP degradation by 18 or 9 %, respectively, after 6 h of cultivation. Ecotoxicological assays monitoring bioindicators from different aquatic ecosystems revealed detoxification coinciding with the removal of metals and organic xenobiotics from binary mixtures. This work indicates the potential of a single microorganism, U. isabellina, to remove both heavy metals and organic xenobiotics from co-contaminated sites, making it a suitable candidate for the development of bioremediation strategies.



中文翻译:

非木质素分解真菌伞形藻解毒并同时去除具有内分泌干扰作用的酚类异物和重金属

众所周知,有机和无机污染物会干扰受污染的生态系统中广泛存在的内分泌系统的主要功能。这项研究的目的是评估伞形线虫真菌同时清除多种对环境有重大影响的内分泌干扰物并对其进行解毒的能力:重金属Cd(II),Zn(II),Mn(II),Pb(II)和Ni( II)和酚类异生物素壬基苯酚(t -NP),4-枯基苯酚(CP)和4-辛基苯酚(4- t - OP )。还研究了金属对真菌生长和单金属吸收效率的影响。伊萨贝利纳(U. isabellina)对Zn(II),Mn(II),Pb(II)和Ni(II)具有相当大的耐受性,IC50 / 24值范围从Ni(II)的5.08到Zn(II)的13.1 mM。在CP存在下,相对于对照,Pb(II)去除的最大效率提高了25%。培养6小时后,补充Mn(II)或Zn(II)分别使4- t -OP降解提高18%或9%。监测来自不同水生生态系统的生物指标的生态毒理学测定表明,排毒与从二元混合物中去除金属和有机异种生物同时发生。这项工作表明单一的微生物,伊莎贝拉菌的潜力,以从共同污染的场所中去除重金属和有机异种生物,使其成为开发生物修复策略的合适人选。

更新日期:2018-08-17
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