Microorganism-decorated nanocellulose for efficient diuron removal

Liu, Jie; Morales‐Narváez, Eden; Vicent, Teresa; Merkoçi, Arben; Zhong, Guohua

doi:10.1016/j.cej.2018.08.035

Cited by 40 publications

(15 citation statements)

References 41 publications

(47 reference statements)

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“…Natural cellulose and herbivore waste are also suitable materials owing to their excellent biocompatibility. Liu et al (2018) immobilized the strain A. globiformis D47 on the fiber networks of nanocellulose and showed that the application of bacteria-decorated nanocellulose produced a higher degradation rate of DUR under different conditions. Silkworm excrement has also been used to immobilize the same bacterium, showing a high survival rate and stable catalytic degradation of DUR ( Liu et al, 2019 ).…”

Section: Preventive Bioremediation Using Diuron-degrading Microorganismsmentioning

confidence: 99%

“…Various technologies have emerged to remove DUR from the environment and reduce its harmful effects, including advanced physical adsorption, photocatalytic degradation, chemical degradation, and biological treatments (da Silva Teófilo et al, 2020;de Souza and Dos Santos, 2020;Park and Jhung, 2020;Silambarasan et al, 2020). However, previous studies have reported that the by-products of the abiotic transformation of this compound are more hazardous than the parent compound itself (Liu et al, 2018;Manonmani et al, 2020). Moreover, DUR can be released back into the soil after the formation of bound residues via physical adsorption (Dias Guimaraes et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Emerging Strategies for the Bioremediation of the Phenylurea Herbicide Diuron

Zhang

Lin

et al. 2021

Front. Microbiol.

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Diuron (DUR) is a phenylurea herbicide widely used for the effective control of most annual and perennial weeds in farming areas. The extensive use of DUR has led to its widespread presence in soil, sediment, and aquatic environments, which poses a threat to non-target crops, animals, humans, and ecosystems. Therefore, the removal of DUR from contaminated environments has been a hot topic for researchers in recent decades. Bioremediation seldom leaves harmful intermediate metabolites and is emerging as the most effective and eco-friendly strategy for removing DUR from the environment. Microorganisms, such as bacteria, fungi, and actinomycetes, can use DUR as their sole source of carbon. Some of them have been isolated, including organisms from the bacterial genera Arthrobacter, Bacillus, Vagococcus, Burkholderia, Micrococcus, Stenotrophomonas, and Pseudomonas and fungal genera Aspergillus, Pycnoporus, Pluteus, Trametes, Neurospora, Cunninghamella, and Mortierella. A number of studies have investigated the toxicity and fate of DUR, its degradation pathways and metabolites, and DUR-degrading hydrolases and related genes. However, few reviews have focused on the microbial degradation and biochemical mechanisms of DUR. The common microbial degradation pathway for DUR is via transformation to 3,4-dichloroaniline, which is then metabolized through two different metabolic pathways: dehalogenation and hydroxylation, the products of which are further degraded via cooperative metabolism. Microbial degradation hydrolases, including PuhA, PuhB, LibA, HylA, Phh, Mhh, and LahB, provide new knowledge about the underlying pathways governing DUR metabolism. The present review summarizes the state-of-the-art knowledge regarding (1) the environmental occurrence and toxicity of DUR, (2) newly isolated and identified DUR-degrading microbes and their enzymes/genes, and (3) the bioremediation of DUR in soil and water environments. This review further updates the recent knowledge on bioremediation strategies with a focus on the metabolic pathways and molecular mechanisms involved in the bioremediation of DUR.

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Section: Preventive Bioremediation Using Diuron-degrading Microorganismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Emerging Strategies for the Bioremediation of the Phenylurea Herbicide Diuron

Zhang

Lin

et al. 2021

Front. Microbiol.

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“…The limit of detection (LOD) was determined as the lowest concentration giving a response three times greater than the signal-to-noise (S/N) ratio. The limit of quantitation (LOQ) was estimated as 10 times of the S/N ratio [26]. The LOD and LOQ of beta-cypermethrin reached to 0.2 µg/mL and 0.7 µg/mL, respectively.…”

Section: Growth Of Strain Bcc01 In Beta-cypermethrin-supplemented Mediamentioning

confidence: 99%

Biodegradation of Pyrethroids by a Hydrolyzing Carboxylesterase EstA from Bacillus cereus BCC01

Zhong

et al. 2019

Applied Sciences

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Microbial degradation has been considered as a rapid, green, and cost-effective technique to reduce insecticide pollutions in a contaminated environment. However, the instability and low efficacy of non-indigenous microorganisms hampers their further exploitation when being introduced into a real environmental matrix. In order to overcome the restriction that these functional microorganisms are under, we investigated the optimal conditions to improve the pyrethroid-degrading ability of one previously isolated bacterium Bacillus cereus BCC01, where 9.6% of the culture suspension (with cell density adjusted to OD600 = 0.6) was inoculated into 50 mL media and cultivated at pH 8 and 30 °C, and its metabolic pathway was illuminated by analyzing the main metabolites via gas chromatography mass spectrometry (GC-MS). Most importantly, a key pyrethroid-hydrolyzing carboxylesterase gene estA was identified from the genomic library of strain BCC01, and then expressed in Escherichia coli BL21 (DE3). After purification, the recombinant protein EstA remained soluble, displaying high degrading activity against different pyrethroids and favorable stability over a wide range of temperatures (from 15 °C to 50 °C) and pH values (6.5–9). Therefore, the EstA-associated biodegradation of pyrethroids was determined, which could provide novel insights to facilitate the practical application of B. cereus BCC01 in the microbial detoxification of pyrethroid contamination.

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“…8 DUR is soluble in water, with a solubility of 42 mg L À1 at 25 C; it has strong persistence and has a half-life of approximately 300 days. 9,10 Therefore, DUR is considered as a major pollutant in the environment, 11 it is a highly toxic substance, 11,12 and it is listed as a carcinogen by the International Cancer Research Agency and the US Environmental Protection Agency. 13,14 DUR easily enters surface water and groundwater through runoff; therefore, it is frequently detected in water in numerous countries.…”

Section: Introductionmentioning

confidence: 99%

“…32 Montmorillonite (NM) has a high cation exchange capacity and high specic surface area, and it has been extensively used to remove dyes and heavy metals from water. 11,33 At present, although there are studies on combining CNCs and NM to remove dyes and heavy metals, 34 there is no research on forming such composites to eliminate herbicides. Therefore, in this study, organic montmorillonite (CTM) was obtained by modifying montmorillonite with cetyltrimethylammonium bromide (CTAB), and it was subsequently combined with sulfuric acidhydrolyzed CNCs.…”

Section: Introductionmentioning

confidence: 99%