A marine fungus Alternaria alternata FB1 efficiently degrades polyethylene

Gao, Rongrong; Li, Rui; Sun, Chaomin

doi:10.1016/j.jhazmat.2022.128617

Cited by 84 publications

(40 citation statements)

References 61 publications

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“…Helium was used as a carrier gas. Ions/fragments were monitored in scanning mode through 50–600 Amu 61 . Some potential degradation products were identified according to the high match score (>800) of each compound in the NIST library.…”

Section: Methodsmentioning

confidence: 99%

Polyvinyl chloride degradation by a bacterium isolated from the gut of insect larvae

et al. 2022

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Evidence for microbial degradation of polyvinyl chloride (PVC) has previously been reported, but little is known about the degrading strains and enzymes. Here, we isolate a PVC-degrading bacterium from the gut of insect larvae and shed light on the PVC degradation pathway using a multi-omic approach. We show that the larvae of an insect pest, Spodoptera frugiperda, can survive by feeding on PVC film, and this is associated with enrichment of Enterococcus, Klebsiella and other bacteria in the larva’s gut microbiota. A bacterial strain isolated from the larval intestine (Klebsiella sp. EMBL-1) is able to depolymerize and utilize PVC as sole energy source. We use genomic, transcriptomic, proteomic, and metabolomic analyses to identify genes and proteins potentially involved in PVC degradation (e.g., catalase-peroxidase, dehalogenases, enolase, aldehyde dehydrogenase and oxygenase), and propose a PVC biodegradation pathway. Furthermore, enzymatic assays using the purified catalase-peroxidase support a role in PVC depolymerization.

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Section: Methodsmentioning

confidence: 99%

Polyvinyl chloride degradation by a bacterium isolated from the gut of insect larvae

et al. 2022

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“…Yet, it remains to be tested in how far fungi on marine plastics are also able to degrade them. In fact, only a few species, such as Zalerion maritimum and Aternaria alternata were shown to degrade PE (Paco et al, 2017;Gao et al, 2022).…”

Section: Conventional Plastic Polymer Degradation By Fungimentioning

confidence: 99%

Role of fungi in bioremediation of emerging pollutants

et al. 2023

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Advancements in chemical, medical, cosmetic, and plastic producing industries have improved agricultural yields, health and human life in general. As a negative consequence, a plethora of chemicals are intentionally and unintentionally released to terrestrial and aquatic environments with sometimes devastating effects for entire ecosystems. One mitigation strategy to counteract this pollution is bioremediation. Bioremediation is an umbrella term for biologically mediated processes during which an undesired compound is transformed, degraded, sequestered and/or entirely removed from the ecosystem. Organisms across all domains of life may mediate bioremediation; yet, fungi are particularly promising candidates. They possess metabolic capabilities to break down complex molecules which make fungi the ultimate degraders of recalcitrant organic matter in nature. Bioremediation by fungi, also termed mycoremediation, has been more frequently investigated in terrestrial than aquatic ecosystems, although fungi also thrive in lacustrine and marine environments. Here, we focus on mycoremediation of emerging pollutants in aquatic environments. In this context, we draw parallels between terrestrial and aquatic fungal taxa, and their role in mycoremediation. We discuss the ability of fungi to break-down (i) pesticides, (ii) pharmaceuticals and personal care products, (iii) plastics, both conventional types and (iv) bioplastics, and fungal role, (v) mitigation of heavy metal pollution. Furthermore, we (vi) discuss possible mycoremediation strategies in applied settings and highlight novel enzyme based mycoremediation strategies.

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“…Aside from environmental factors and the activities of microbial species, the biodegradation of manufactured plastics is a slow process. Fungal enzymes like proteases, laccases, cutinases Lipases as well as the presence of pro-oxidant ions and lignocellulolytic enzymes, all play a key role in plastic biodegradation ( Gao et al, 2022 ).…”

Section: Environmental Plastic Degradationmentioning

confidence: 99%