Mycoremediation of Pollutants in Aquatic Environs

Assad, Rezwana; Rafiq, Iflah; Bashir, Iqra; Sofi, Irshad Ahmad; Reshi, Zafar A.; Rashid, Irfan

doi:10.1201/9781003130116-10

Cited by 2 publications

(1 citation statement)

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“…Freshwater fungi and fungus-like organisms are key decomposers of organic material, playing an important role in nutrient cycling, bioremediation, and ecosystem functioning. Aquatic fungi can metabolize organic xenobiotics (Baker et al, 2019;Miglani et al, 2022), plastic polymers (Zeghal et al, 2021;Srikanth et al, 2022), heavy metals, dyes, industrial chemicals such as polychlorinated biphenyls (PCBs) and pharmaceuticals such as diclofenac (Assad et al, 2021). Most fungi (including the fungus-like oomycetes) feed by osmotrophy.…”

Section: Introductionmentioning

confidence: 99%

Assimilation of synthetic plastic nanoparticles by the oomycete Pythium aquatile

Annenkov

Danilovtseva²,

Palshin³

et al. 2022

LFWB

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Abstract. The degradation of synthetic plastics in the environment proceeds through the stages of micro- and nanoparticles. Freshwater fungi and fungus-like organisms are key decomposers of organic material. The most fungi (including the fungus-like oomycetes) feed by osmotrophy, which involves the release of exoenzymes into the environment to break down complex biological polymers, followed by cellular uptake of simplified monomers. This article aims to cultivate oomycete Pythium aquatile H hnk, 1953 in the presence of synthetic plastic nanoparticles as an only source of carbon compounds. The nanoparticles were bulk stained with water-insoluble fluorescent dye. We studied such widely used polymers as polystyrene (PS), poly(vinyl chloride), poly(methyl acrylate) (PMA) and poly(methyl methacrylate) (PMMA). This first experiment on exposure of plastic nanoparticles to oomycete hyphae showed the ability of these fungus-like organisms to capture these particles through a certain type of endocytosis. The fate of nanoplastics in the presence of P. aquatile depends on the chemical structure of the polymer. PMMA with a quaternary carbon atom is the most stable, PMA and PS containing the active -CH atom are rapidly destroyed by oomycetes.

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