Biodegradation and bioconversion of endrin by white rot fungi, Phlebia acanthocystis and Phlebia brevispora

Kondo

2020

J Wood Sci

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Pentachlorophenol (PCP) has been introduced into the environment mainly as a wood preservative and biocide. The degradation and transformation of PCP in liquid culture by wood-decaying fungus capable of degrading organochlorine pesticides was investigated in this study. The results of tolerance test showed that the tolerance level of Phlebia acanthocystis to PCP in potato dextrose agar medium was higher than that of other Phlebia species. At the end of 10 days of incubation, P. acanthocystis was able to remove 100% and 76% of PCP (25 μM) in low-nitrogen and potato dextrose broth media, respectively. The decrease of PCP in P. acanthocystis culture is accompanied by the formation of pentachloroanisole and p-tetrachlorohydroquinone via methylation and oxidation reactions. Moreover, the p-tetrachlorohydroquinone formed is rapidly converted to methylated products including tetrachloro-4-methoxyphenol and tetrachloro-1,4-dimethoxybenzene. The activities of lignin peroxidase and manganese peroxidase were found to increase in extracellular fluid from fungal culture treated with high-concentration PCP, with maximum values of 169.6 U/L and 73.4 U/L, respectively. The in vitro degradation of PCP and p-tetrachlorohydroquinone was confirmed using extracellular fluid of P. acanthocystis, suggested that the methylation of both compounds is related to extracellular enzymes. Degradation of PCP was efficiently inhibited by piperonyl butoxide or 1-aminobenzotriazole, demonstrating that cytochrome P450 monooxygenase is involved in fungal transformation of PCP, particularly in the oxidation of PCP to p-tetrachlorohydroquinone. Additionally, P. acanthocystis mineralized 9.3% of the PCP to 14 CO 2 in low-nitrogen culture during 42 days. Results obtained in the present study are in favor of the use of P. acanthocystis as a microbial tool of remediation of PCP-contaminated sites.

Section: Effects Of Cyt P450 Inhibitorssupporting

confidence: 58%

Section: Pcp Tolerance Experimentsmentioning

confidence: 99%

Section: Cytochrome P450 Inhibitors Experimentsmentioning

confidence: 99%

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Biodegradation and biotransformation of pentachlorophenol by wood-decaying white rot fungus Phlebia acanthocystis TMIC34875

Kondo

2020

J Wood Sci

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“…These extracellular LEM have very low substrate specificity, so they are able to degrade a wide range of highly organopollutants that are structural similar to lignin. Their capacities to remove xenobiotic substances into less or non-toxic substances make them a useful and powerful tool for bioremediation of polluted environment (Lebkowska and Zaleska-Radziwill 2014;Xiao and Kondo 2019). In fact, WRFs are robust, ubiquitous organisms that can survive in the presence of high concentrations of various pollutants, even with a low bioavailability (Xiao and Kondo 2020a).…”

Section: Introductionmentioning

confidence: 99%

Bibliometric analysis of global research on white rot fungi biotechnology for environmental application

Wang

2021

Environ Sci Pollut Res

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In recent years, white rot fungi (WRFs) have received tremendous attention as a biotechnological tool for environmental pollution control. In order to systematically and comprehensively describe the progress, trends, and hotspots of WRF biotechnology in the field of environmental pollution control, the 3967 related publications from 2003 to 2020 were collected from Web of Science Core Collection database, and the bibliometric characteristics including publication output, country, institution, journal, author, citation frequency, h-index, and research focus were evaluated by using Excel 2007, CiteSpace V, and VOSviewer. The results indicated that the number of research publications increased rapidly before 2009, but after that, the number of publications fluctuated in a certain range. China and USA were the most productive countries and the most active country in international cooperation. In this field, most authors tend to cooperate within a small group. The journal and subject category with the largest number of publications are "International Biodeterioration & Biodegradation" and "Biotechnology Applied Microbiology", respectively. The analysis of high-frequency keywords revealed that "laccase", "biodegradation", "decolorization", and "Phanerochaete chrysosporium" were the most cited terms among all publications. The pretreatment of biomass waste, decolorization of dye wastewater, and bioremediation of polluted environment are the key research directions of WRF biotechnology. Finally, the frontier topics and active authors in this research field were identified using burst detection. We believe that this bibliometric study provides a comprehensive and systematic overview and promoted the future cooperative research and knowledge exchange in this field of WRF biotechnology for environmental applications.

“…These extracellular LEM have very low substrate speci city so they are able to degrade a wide range of highly organopollutants that are structurall similar to lignin. Their capacities to remove xenobiotic substances into less or non-toxic substances, make them a useful and powerful tool for bioremediation of polluted environment (Lebkowska and Zaleska-Radziwill 2014;Xiao and Kondo 2019). In fact, WRF are robust, ubiquitous organisms that can survive in the presence of high concentrations of various pollutants, even with a low bioavailability (Xiao and Kondo 2020a).…”

Section: Introductionmentioning

confidence: 99%

Bibliometric analysis of global research on white rot fungi biotechnology for environmental application

Wang

2021

Preprint

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In recent years, white rot fungi (WRF) have received tremendous attention as a biotechnological tool for environmental pollution control. Although there are a large number of research articles and reviews concerning WRF biotechnology in environmental application, to our knowledge no bibliometric research of this topic has been published. This study used bibliometric method to evaluated 3962 related publications collected from Web of Science Core Collection database published between 2003 and 2020. The results indicated that China was the most productive country, while the USA is the most active country in international cooperation. The closest international collaborative networks were evidenced between the USA and China. Most authors tend to cooperate within a small group, which leads to the lack of effective cooperation among different groups. The most prominent journals in this field were “International Biodeterioration & Biodegradation” and “Bioresource Technology”, and “Biotechnology Applied Microbiology” was the most popular subject category. The analysis of high-frequency keywords revealed that “laccase”, “biodegradation”, “decolorization” and “Phanerochaete chrysosporium” were the most cited terms among all publications, and that the hottest topics focus on pretreatment of biomass waste by WRF, decolorization of dye wastewater by WRF, and bioremediation of polluted environment by WRF, etc. Finally, the frontier topics and active authors in this research field were identified using burst detection. This bibliometric study promoted the future cooperative research and knowledge exchange by visualizing the recent developments and future trends in WRF biotechnology for environmental applications.