Soil fungi for mycoremediation of arsenic pollution in agriculture soils

Journal of Applied Microbiology
M SinghRudra Deo Tripathi

Abstract

Soil arsenic (As) contamination of food-chains and public health can be mitigated through fungal bioremediation. To enumerate culturable soil fungi, soils were collected from the As-contaminated paddy fields (3-35 mg kg(-1) ) of the middle Indo-Gangetic Plains. Total 54 fungal strains were obtained and identified at their molecular level. All strains were tested for As tolerance (from 100 to 10,000 mg l(-1) arsenate). Fifteen fungal strains, tolerant to 10,000 mg l(-1) arsenate, were studied for As removal in-vivo for 21 days by cultivating them individually in potato dextrose broth enriched with 10 mg l(-1) As. The bioaccumulation of As in fungal biomass ranged from 0·023 to 0·259 g kg(-1). The biovolatilized As ranged from 0·23 to 6·4 mg kg(-1). Higher As bioaccumulation and biovolatilization observed in the seven fungal strains, Aspergillus oryzae FNBR_L35; Fusarium sp. FNBR_B7, FNBR_LK5 and FNBR_B3; Aspergillus nidulans FNBR_LK1; Rhizomucor variabilis sp. FNBR_B9; and Emericella sp. FNBR_BA5. These fungal strains were also tested and found suitable for significant plant growth promotion in the calendula, withania and oat plants in a greenhouse based pot experiment. These fungal strains can be used for As remediation in As-c...Continue Reading

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Citations

Aug 4, 2016·Fungal Genetics and Biology : FG & B·Kristin Schulz-BohmPaolina Garbeva
Jul 26, 2019·Environmental Science. Processes & Impacts·Udeme John DicksonNicholas Ray
Aug 21, 2019·Journal of Basic Microbiology·Soumyadev SarkarRatan Gachhui
May 15, 2018·Frontiers in Microbiology·Frédéric PlewniakPhilippe N Bertin
Mar 24, 2020·Ecotoxicology and Environmental Safety·Jasvinder KaurSuchi Srivastava
Apr 28, 2021·Environmental Science and Pollution Research International·Muhammad TayyabHua Zhang
Aug 7, 2021·Environmental Science and Pollution Research International·Pengfei XiaoJianqiao Wang

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