Potentiality of white-rot fungi in biosorption of nickel and cadmium: Modeling optimization and kinetics study

Giri

2020

Lett. Appl. Microbiol.

Section: Effect Of Metal Ions On Fungal Growthsupporting

confidence: 58%

“…2011; Noormohamadi et al . 2019). Phlebia brevispora could remove much higher amount of these metals in the present study.…”

Section: Resultsmentioning

confidence: 99%

Lead, cadmium and nickel removal efficiency of white‐rot fungus Phlebia brevispora

Giri

2020

Lett. Appl. Microbiol.

“…The type of functional groups present depended on the fungal species 36 . For examples, Pb removal by B. bassiana isolated by Gola et al 37 primarily involved protein (N-H), carbohydrate, fatty acids esters and protein amide groups, while the uptake of Cd by Phanerochaete www.nature.com/scientificreports www.nature.com/scientificreports/ chrysosporium was attributed to hydroxyl, carboxylic and amino functional groups 38 . Hydroxyl, ethers, amines/ amides, carboxylic acid/carboxylate and phosphatidate groups of Penicillium chrysogenum CS1 were involved in Cr and Pb adsorption 39 , whereas hydroxyl, amides, carboxyl, and sulfhydryl groups of Pleurotus ostreatus ISS-1 were drawn into Pb adsorption 40 .…”

Section: Metalmentioning

confidence: 99%

Multiple heavy metal tolerance and removal by an earthworm gut fungus Trichoderma brevicompactum QYCD-6

Zhang

Yin

Abbas

et al. 2020

Sci Rep

fungal bioremediation is a promising approach to remove heavy-metal from contaminated water. present study examined the ability of an earthworm gut fungus Trichoderma brevicompactum QYCD-6 to tolerate and remove both individual and multi-metals. the minimum inhibitory concentration (MIC) of heavy metals [Cu(II), Cr(VI), Cd(II) and Zn(II)] against the fungus was ranged 150-200 mg L −1 on composite medium, and MIC of Pb(II) was the highest with 1600 mg L −1 on potato dextrose (pD) medium. The Pb(II) presented the highest metal removal rate (97.5%) which mostly dependent on bioaccumulation with 80.0%, and synchronized with max biomass (6.13 g L −1) in PD medium. However, on the composite medium, the highest removal rate was observed for Cu(II) (64.5%). Cellular changes in fungus were reflected by TEM analysis. FTIR and solid-state NMR analyses indicated the involvement of different functional groups (amino, carbonyl, hydroxyl, et al.) in metallic biosorption. these results established that the earthworm-associated T. brevicompactum QYCD-6 was a promising fungus for the remediation of heavy-metal wastewater. Environmental pollution by heavy metals (such as Cr(VI), Cu(II), Cd(II), Pb(II) and Zn(II)), is widespread owing to urbanization, industrialization and agricultural practices 1,2. As multi-metals are non-biodegradable, they are constantly present in the environment and bio-accumulate in the tissues of plants, animals and humans, resulting in bio-magnification in the food chain. Biomagnified heavy metals lead to health disorders, such as osteomalacia, birth defects, and health hazards to the liver, kidneys, nervous and gastrointestinal systems 3,4. Toxic heavy metals are traditionally treated by physicochemical techniques, such as precipitation, membrane filtration, adsorption, and chemical oxidation-reduction 5. However, these methods are generally costly and ineffective when the metallic concentrations are low 1. The use of microorganisms to bioremediate is a cheaper and environmental friendly alternative approach to remove heavy metals from environment 6-8. Earthworms have the ability to accumulate heavy metals, including Cu, Cd, Pb and Zn 9. In general, metallic accumulation by earthworm occurs through two pathways, which include absorption following dermal contact and adsorption through the intestinal tissues 10-12. It has been reported that the gut microbiota of other animals were found to exhibit strong metals tolerance and binding abilities 13,14. So, it could be hypothesized that the intestinal microorganisms of earthworms have the ability of heavy metal tolerance and removal. In the course of our ongoing efforts to screen potential strain for metal removal from the gut microbiota of earthworm, we found that intestinal fungus Trichoderma brevicompactum QYCD-6 of Pheretima tschiliensis exhibited good potential for heavy metal tolerance. Here, we reported the details of the ability and mechanisms of tolerance and removal of the individual heavy metal as well as multiple metals by T. brevicompactum QYCD-6. T...

“…The extraction factor (EF) ratios of plants exposed to single or mixed HMs were >1 (Table 1 ). In white-rot fungi, the potentiality of nickel and cadmium has been reported (Noormohamadi et al 2018 ).…”

Section: Resultsmentioning

confidence: 99%

Synergistic and concentration-dependent toxicity of multiple heavy metals compared with single heavy metals in Conocarpus lancifolius

Redha

Al-Hasan

Afzal

2021

Environ Sci Pollut Res

While heavy metals (HMs) naturally occur in soil, anthropogenic activities can increase the level of these toxic elements. Conocarpus lancifolius Engl. (Combretaceae) was investigated as a potential phytoremediator of soils contaminated with HM containing crude oil. This study assessed the potential of C. lancifolius (CL), a locally available plant species in Kuwait, for resolving local issues of the HM-contaminated soils. The absorption, accumulation, and distribution of three toxic HMs (Cd, Ni, and Pb) and essential metals (Fe, Mg, and metalloid Se) were examined, and their role in plant toxicity and tolerance was evaluated. Conocarpus lancifolius plants were exposed to two different concentrations of single and mixed HMs for 30 days. The accumulation of HMs was determined in the roots, leaves, stems, and the soil using ICP/MS. Biomass, soil pH, proline and protein content, and bioaccumulation, extraction, and translocation factors were measured. The bioaccumulation, extraction, and transcription factors were all >1, indicating CC is a hyperaccumulator of HM. The HM accumulation in CL was concentration-dependent and depended on whether the plants were exposed to individual or mixed HMs. The C.C leaves, stems, and roots showed a significant accumulation of antioxidant constituents, such as proline, protein, Fe, Mg, and Se. There was an insignificant increase in the soil pH, and a decrease in plant biomass and a significant increase in protein, and osmoprotective-proline as a result of the interaction of mixed heavy metals that are more toxic than single heavy metals. This study indicates that C. lancifolius is a good candidate for phytoremediation of multiple HM-contaminated soils. Further studies to establish the phyto-physiological effect of multiple heavy metals are warranted.