Screening of heavy metal stress tolerant fungal isolates for bioremediation and restoration of soil health

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email:
Doi: 10.1007/s42535-022-00417-z
First Page: 484
Last Page: 493
Views: 569

Keywords: Bioremediation, Heavy metals stress, Trichoderma , Fungi, Use-reuse method


Heavy metal pollution poses a serious threat to all life forms in the environment due to its harmful effects and persistent nature. At low quantities, these metals are highly reactive and can accumulate in the food web, posing serious public health risks. Traditional physical and chemical methods of remediation are inefficient and produce enormous amounts of chemical waste. Over the years, bioremediation of toxic metals has attracted a lot of attention. In addition, their environmental friendliness and financial effectiveness make them a viable option for heavy metal contamination cleanup. Fungal isolates from rhizospheric soils of different locations of Raiganj, Uttar Dinajpur were collected, identified, and screened to assess their resistance to Ni, Cd and Co. Six fungal isolates were selected to study their tolerance to heavy metals. Results showed that Trichoderma aureoviride TaN16 was observed as the most tolerant fungal species capable of growing at elevated levels of Ni, Cd and Co. Trichoderma yunnanense TaN17 was also found with good potential for heavy metal tolerance. The exploration of the resistance mechanism of these fungi against the heavy metals can be helpful to know the bioremediation properties of them in future.

Bioremediation, Heavy metals stress, 
              , Fungi, Use-reuse method

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Authors are thankful to Indian Type Culture Collection (ITCC), New Delhi and National Fungal Culture Collection of India (NFCCI), Pune for their technical assistance for fungal identification.

Author Information

Sarkar Monalisha
Mycology and Plant Pathology Laboratory, Department of Botany, Raiganj University, Uttar Dinajpur, India

Tiru Zerald
Mycology and Plant Pathology Laboratory, Department of Botany, Raiganj University, Uttar Dinajpur, India

Pal Ayon
Microbiology and Computational Biology Laboratory, Department of Botany, Raiganj University, Uttar Dinajpur, India

Chakraborty Arka Pratim
Mycology and Plant Pathology Laboratory, Department of Botany, Raiganj University, Uttar Dinajpur, India

Mandal Parimal
Mycology and Plant Pathology Laboratory, Department of Botany, Raiganj University, Uttar Dinajpur, India