Degradation of the herbicide paraquat by macromycetes isolated from southeastern Mexico

Morales, Reyna Lucero Camacho; Guillén-Navarro, Karina; Sánchez, José E.

doi:10.1007/s13205-017-0967-3

Cited by 12 publications

(4 citation statements)

References 58 publications

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“…Biodegradation studies revealed that paraquat-degrading microorganisms do not exhibit similar efficiency in degrading different concentrations of paraquat. Camachomorales et al (2017b) isolated 54 macromycetes from southeastern Mexico, and only three ( Trametes pavonia ECS-67, Trametes versicolor ECS-79, and H. dispersum ECS-705) presented 54.2, 54.1, and 70.7% of paraquat (100 mg/L) degradation within 12 days. In another study Camachomorales et al (2017a) revealed that three other macromycetes including Polyporus tricholoma ECS-58 (32%, 75 mg/L), Cylindrobasidium laeve ECS-91 (26%, 25 mg/L), and Deconica citrispora ECS-77 (47%, 25 mg/L), showed lower paraquat degradation after 12 days of incubation.…”

Section: Microbial Degradation Of Paraquatmentioning

confidence: 99%

“…There is less information about the fungal degradation of paraquat, and the overall degradation effect of fungi is not as significant as that of bacteria. A recent study on fungi by Camachomorales et al (2017b) indicated that 70.7% paraquat was removed by Hypholoma dispersum ECS-705 in 12 days. Bacteria metabolize paraquat in two ways: (1) bacteria utilize paraquat as the sole nitrogen or carbon source, and (2) bacteria transform paraquat into low-toxic or non-toxic products through co-metabolism.…”

Section: Bioremediation Potential Of Paraquat-degrading Microorganismsmentioning

confidence: 99%

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Paraquat Degradation From Contaminated Environments: Current Achievements and Perspectives

et al. 2019

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Paraquat herbicide has served over five decades to control annual and perennial weeds. Despite agricultural benefits, its toxicity to terrestrial and aquatic environments raises serious concerns. Paraquat cannot rapidly degrade in the environment and is adsorbed in clay lattices that require urgent environmental remediation. Advanced oxidation processes (AOPs) and bioaugmentation techniques have been developed for this purpose. Among various techniques, bioremediation is a cost-effective and eco-friendly approach for pesticide-polluted soils. Though several paraquat-degrading microorganisms have been isolated and characterized, studies about degradation pathways, related functional enzymes and genes are indispensable. This review encircles paraquat removal from contaminated environments through adsorption, photocatalyst degradation, AOPs and microbial degradation. To provide in-depth knowledge, the potential role of paraquat degrading microorganisms in contaminated environments is described as well.

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Section: Microbial Degradation Of Paraquatmentioning

confidence: 99%

Section: Bioremediation Potential Of Paraquat-degrading Microorganismsmentioning

confidence: 99%

Paraquat Degradation From Contaminated Environments: Current Achievements and Perspectives

et al. 2019

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“…It has been established that a number of fungus species are effective paraquat degraders. For instance, T. versicolor ECS-79, T. pavonia ECS-67, and H. dispersum ECS-705 can degrade paraquat at similar 55, 55, and 71% rates, respectively (Camachomorales et al, 2017). Funderburk (1969) found that L. starkeyi was able to degrade both Diquat and paraquat.…”

Section: Introductionmentioning

confidence: 99%

RNA-sequencing analysis of the Diquat-degrading yeast strain Meyerozyma guilliermondii Wyslmt and the discovery of Diquat degrading genes

et al. 2022

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Diquat is used in agricultural contexts to control the growth of broadleaf and grassy weeds in both terrestrial and aquatic areas. Diquat can be readily absorbed by the soil and can remain therein for extended periods of time, altering the local microenvironment. In this study, the Meyerozyma guilliermondii Wyslmt yeast strain, which has the capacity to degrade Diquat, was isolated from soil exposed to long-term Diquat treatment. Over a 7-day incubation period, this strain was able to remove 42.51% of available Diquat (100 mg/L). RNA-Seq was performed to assess changes in gene expression in this yeast strain over the course of Diquat degradation, revealing 63 and 151 upregulated and downregulated genes, respectively. KEGG pathway enrichment analysis revealed these genes to be most highly enriched in the carbohydrate metabolism pathway. Through functional annotation and gene expression analyses, we identified seven genes were predicted to be involved in Diquat biodegradation. Results of qRT-PCR assays indicated that the relative mRNA expression levels of these seven genes were significantly higher relative to the control group. Together these analyses led to the identification of DN676 as a candidate Diquat-degrading gene. When a pET-DN676 vector was expressed in E. coli BL21, this strain was able to remove 12.49% of provided Diquat (100 mg/L) over the course of a 7-day incubation. These results thus confirmed that the DN676 gene can promote Diquat degradation, with these studies having yielded an engineered BL21-pET-DN676 bacterial strain capable of degrading Diquat.

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“…The degradation capacity by macromycete fungi was also reported by Camacho‐Morales et al . (2017). They found that Tremates pavonia , Trametes versicolor and Hypholoma dispersum isolated from soils in Mexico exhibited high capacity in paraquat degradation (54–70%).…”

Section: Introductionmentioning

confidence: 99%

Filamentous fungi with high paraquat‐degrading activity isolated from contaminated agricultural soils in northern Thailand

Wongputtisin

Supo

Suwannarach

et al. 2020

Lett Appl Microbiol

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The contamination of paraquat (1,1′‐dimethyl‐4,4′‐bipyridylium dichloride) herbicide from the farming area has become a public concern in many countries. This herbicide harms to human health and negatively effects the soil fertility. Several methods have been introduced for the remediation of paraquat. In this study, 20 isolates of the paraquat‐tolerant fungi were isolated from the contaminated soil samples in northern Thailand. We found that isolate PRPY‐2 and PFCM‐1 exhibited the highest degradation activity of paraquat on synthetic liquid medium. About 80 and 68% of paraquat were removed by PRPY‐2 and PFCM‐1 respectively after 15 days of cultivation. Based on the morphological characteristic and molecular analysis, the fungal isolate PRPY‐2 and PFCM‐1 were identified as Aspergillus tamarii and Cunninghamella sp. respectively. The biosorption of paraquat on these fungal mycelia was also investigated. It was found that only 8–10% of paraquat could be detected on their mycelia, while 24–46% of paraquat was degraded by fungal mycelia. This is the first report on paraquat degrading ability by A. tamarii and Cunninghamella sp. It is demonstrated that these filamentous fungi are promising microorganisms available for remediation of paraquat contaminated environment.

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Degradation of the herbicide paraquat by macromycetes isolated from southeastern Mexico

Cited by 12 publications

References 58 publications

Paraquat Degradation From Contaminated Environments: Current Achievements and Perspectives

Paraquat Degradation From Contaminated Environments: Current Achievements and Perspectives

RNA-sequencing analysis of the Diquat-degrading yeast strain Meyerozyma guilliermondii Wyslmt and the discovery of Diquat degrading genes

Filamentous fungi with high paraquat‐degrading activity isolated from contaminated agricultural soils in northern Thailand

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