Role of Fungi in Bioremediation of Soil Contaminated with Heavy Metals

Refaey, Maha; Abdel-Azeem, Ahmed M.; Nahas, Hebatallah H. Abo; Abdel-Azeem, Mohamed A.; El-Saharty, Abeer

doi:10.1007/978-3-030-67561-5_16

Cited by 7 publications

(4 citation statements)

References 211 publications

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“…Furthermore, it is suggested that some fungal species can adapt to metal toxicity due to prolonged exposure to toxic metals (Khan et al 2017). Among the most abundant genera found in the OIZ shoot mycobiota, previous studies have reported that Aureobasidium (Cu, Pb, Cd), Gibberella (Cu, Zn), Alternaria (Se, Cr, Cu, Cd, Ni, Pb, Zn), Cladosporium (Pb, Zn, Cu, Mn, Cd), and Hormonema (Cu, Ni) are microfungi that exhibit resistance to some heavy metals (Helander 1995;Kumar and Dwivedi 2021;Refaey et al 2021;Zhang et al 2022).…”

Section: Discussionmentioning

confidence: 99%

“…In the field of OIZ, despite the high levels of heavy metal pollution, the concentrations of Ni and V elements in P. brutia shoots were below the threshold values, contrary to expectations. However, among the dominant species in the shoot mycobiota of the region, fungi belonging to the Alternaria genus are known to be tolerant to Ni and have adapted to living in environments with high metal accumulations (Lindblom et al 2018;Refaey et al 2021). To the best of the author's knowledge, there is no study reporting any fungal genera identified in the OIZ being involved in V detoxification.…”

Section: Discussionmentioning

confidence: 99%

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Effects of heavy metal contamination on fungal diversity in Pinus brutia shoots

Cebi Kilicoglu

2024

BioRes

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The effects of heavy metal pollution have become a significant global issue in recent years. The primary objective of the present study was to compare the heavy metal concentrations in Pinus brutia shoots grown in an organized industrial zone (OIZ) and a forested area (Adalar) and to examine how these heavy metals affect fungal microbiota. The results achieved here showed that Ni and V concentrations were lower than the detectable limits in both the Adalar and the OIZ region, whereas Se and Cu concentrations were lower than the detectable limits in the shoots collected from the Adalar. Concentrations determined in samples collected from the OIZ were approximately 6 times higher for Cr and 16 times higher for Zn in comparison to the samples collected from the Adalar. Metagenomic analysis revealed that the most common fungal genera were Aureobasidium, Gibberella, Hazslinszkyomyces, Alternaria, Cladosporium, Buckleyzyma, Lasiodiplodia, and Hormonema for the OIZ area and Hormonema, Aureobasidium, Alternaria, Cladosporium, Arthrinium, Fonsecazyma, and Truncatella for the Adalar region. In the future, this study may serve as a reference for the development of innovative strategies for the remediation of heavy metal pollution for a sustainable and clean environment using biological sources.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of heavy metal contamination on fungal diversity in Pinus brutia shoots

Cebi Kilicoglu

2024

BioRes

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“…Over 80,000 fungal species isolated from soil have been described and reported (Bridge and Spooner, 2001). Fungus found on soils are involved in different roles including degradation of heavy toxic metals (Refaey et al, 2021). Fungal diversity can be identified by observation of fruiting bodies in the soil environment or soil isolation from cultures (Frac et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Bioremediation Potential of Soil Lead (Pb) Tolerant Fungi isolated from Owino Uhuru, a Suburb of Mombasa County, Kenya

Panyako,

Wacira,

Omolo

et al. 2024

Preprint

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A lead (Pb) smelter plant located in Owino Uhuru, a suburb of Mombasa County, caused lead poisoning and lifelong health effects. The Government of Kenya closed down the plant after reports of contamination. This study collected 24 soil samples from Owino Uhuru and analyzed them for lead levels using Microplasma Atomic Emission Spectrometry. The study also isolated and identified seven strains of fungi from the lead-contaminated soil and screened them for their ability to absorb lead. The genomic DNA of the fungal isolates was identified using ITS sequences of the rDNA. Blastn analysis indicated that the ITS gene sequences of the isolates had similarities of > 100% with known sequences in the nucleotide sequence database. These fungi were identified as Aspergillus welwitschiae, Aspergillus oryzae, Aspergillus piperis, Aspergillus austwickii, Aspergillus aflatoxiformans and Aspergillus tubingensis. The fungal isolates were tested for their ability to absorb lead at concentrations of 1.0 ppm, 0.8 ppm, 0.6 ppm, 0.4 ppm, and 0.2 ppm. The soil sample closest to the battery recycling plant contained more lead than those collected further away. Soil sample AU06, taken from the area bordering the wall of the lead smelter plant, had the highest lead concentration compared to all the samples. Aspergillus welwitschiae (GRY1) showed a higher potential for lead biosorption of 0.35 ± 0.1 ppm at 0.6 ppm lead concentration compared to other Aspergillus species. The study suggests using these fungal isolates for the removal and bio-treatment of lead-contaminated and polluted environments.

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“…The soil microbiota is an important component of terrestrial ecosystems because it influences the services and overall functioning of the soil [1]. Numerous fungal genera are able to survive in heavy-metalcontaminated environments, and even to reduce their concentration or to metabolize them to less toxic forms, through various resistance mechanisms [2]. For this reason, biological soil remediation methods are taken into consideration for their low costs, low negative impact on the environment as well as their role in ecological restoration [3].…”

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confidence: 99%