Molecular approaches for biodegradation of polycyclic aromatic hydrocarbon compounds: a review

Gupta, Shalini; Pathak, Bhawana; Fulekar, M. H.

doi:10.1007/s11157-014-9353-3

Cited by 109 publications

(43 citation statements)

References 176 publications

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“…1 and 6). Within the Proteobacteria, keystone species belonged to genera Citrobacter and Pseudomonas, known for their nitrate reduction abilities (Huang and Tseng, 2001), and Acinetobacter, a genus contributing to mineralization of aromatic compounds (Gupta et al, 2015). The keystone species within phylum Firmicutes belonged to class Bacilli (Table S6), and one possible explanation for this is that such spore-forming bacteria possess a strong adaptation to the selection pressures exerted by the sediment habitats (Xia et al, 2016), such that they may cooperate with other bacteria and play a critical role in maintaining the ecological function of the bacterial community.…”

Section: Controlling Factors For Biogeographic Patterns Of Bacterial mentioning

confidence: 99%

Fungal community demonstrates stronger dispersal limitation and less network connectivity than bacterial community in sediments along a large river

Juan

Wang

et al. 2019

Environmental Microbiology

133

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Summary Despite the essential functions of sedimentary bacterial and fungal communities in biogeochemical cycling, little is known about their biogeographic patterns and driving processes in large rivers. Here we investigated the biogeographic assemblies and co‐occurrence patterns of sedimentary bacterial and fungal communities in the Jinsha River, one of the largest rivers in southwestern China. The mainstream of river was divided into upstream, midstream and downstream. The results showed that both bacterial and fungal communities differed significantly among three sections. For both communities, their composition variations in all sites or each river section were controlled by the combination of dispersal limitation and environmental selection, and dispersal limitation was the dominant factor. Compared with bacteria, fungi had stronger dispersal limitation. Co‐occurrence network analyses revealed higher network connectivity but a lower proportion of positive interaction in the bacterial than fungal network at all sites. In particular, the keystone species belonging to bacterial phyla Proteobacteria and Firmicutes and fungal phyla Ascomycota and Chytridiomycota may play critical roles in maintaining community function. Together, these observations indicate that fungi have a stronger dispersal limitation influence and less network connectivity than bacteria, implying different community assembly mechanisms and ecological functions between bacteria and fungi in large rivers.

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Section: Controlling Factors For Biogeographic Patterns Of Bacterial mentioning

confidence: 99%

Fungal community demonstrates stronger dispersal limitation and less network connectivity than bacterial community in sediments along a large river

Juan

Wang

et al. 2019

Environmental Microbiology

133

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“…Los microorganismos que intervienen en este proceso son principalmente bacterias y en menor proporción, hongos nativos y algas. La tasa de degradación microbiana está condicionada por la capacidad de adaptación de los microorganismos nativos a las nuevas condiciones edáficas, la disponibilidad de nutrientes, el contenido de oxígeno, la temperatura, la conductividad eléctrica (CE) y el pH (Abed et al 2015, Bansal y Kim 2015, Gupta et al 2015. La bioestimulación por otro lado, consiste en la incorporación de nutrientes y aceptores de electrones para incrementar la actividad microbiana, con el objeto de acelerar la tasa de biodegradación si las condiciones ambientales son favorables (Tyagi et al 2011, Wu et al 2016.…”

Section: Introductionunclassified

Respiración Potencial Durante La Bioestimulación De Un Suelo Contaminado Con Hidrocarburos Aromáticos Policíclicos

Torri

Cabrera

Alberti

2018

Rev. Int. Contam. Ambie.

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Palabras clave: biodegradación, antraceno, fenantreno, microorganismos, suelos, HAP RESUMENLos hidrocarburos aromáticos policíclicos (HAP) son compuestos orgánicos que pueden persistir en el ambiente debido a su hidrofobicidad y a su baja solubilidad en agua, lo que representa un riesgo de ingresar a la cadena trófica. Ciertos microorganismos edáficos son potencialmente capaces de degradarlos. La incorporación de nutrientes puede acelerar la tasa de biodegradación si las condiciones del suelo son favorables. Los objetivos del presente trabajo fueron estudiar el efecto disipador de los microorganismos edáficos nativos en un suelo contaminado artificialmente con dos HAP (antraceno o fenantreno), además de evaluar el efecto en la disponibilidad de macro y micro nutrientes. Adicionalmente, se estudió la influencia de la estructura química del contaminante en el proceso de biorremediación. Se realizó un ensayo de incubación con un suelo hapludol típico contaminado artificialmente con antraceno o con fenantreno. La actividad microbiana se estimó en forma indirecta través de la producción de CO2. La presencia de antraceno o de fenantreno no afectó la actividad microbiana edáfica inicial. Se observó un incremento en la emisión total de CO2 en los suelos contaminados comparado con los suelos sin contaminar debido a la degradación de los contaminantes. Al término de 60 días se analizaron los suelos por cromatografía gaseosa con detector de espectrometría de masas. Según los tratamientos, la concentración de antraceno y de fenantreno disminuyó un 75 -77 % o un 89 -91 %, respectivamente. Lo que indica la capacidad de los microorganismos nativos edáficos para degradar rápidamente ambos contaminantes. La disipación del fenantreno fue mayor que la correspondiente al antraceno, lo que fue atribuido a su diferente biodisponibilidad en el suelo. No se observaron diferencias significativas entre tratamientos con y sin nutrientes, por lo que se concluye que la disponibilidad de éstos no fue limitante para la actividad catabólica de los microorganismos edáficos.

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“…Many PAHs exhibit toxic, carcinogenic, mutagenic and/or teratogenic properties; therefore, it is justified to search for effective methods to eliminate such compounds from the environment (Gupta et al 2015). …”

Section: Introductionmentioning

confidence: 99%

Influence of soil contamination with PAH on microbial community dynamics and expression level of genes responsible for biodegradation of PAH and production of rhamnolipids

Szczepaniak

Czarny

Staninska-Pięta

et al. 2016

Environ Sci Pollut Res

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The aim of this study was to evaluate the effect of bioaugmentation and addition of rhamnolipids on the biodegradation of PAHs in artificially contaminated soil, expression of genes crucial for the biodegradation process (PAHRHDαGN, PAHRHDαGP), and the synthesis of rhamnolipids as well as population changes in the soil bacterial metabiome. The positive effect of bioaugmentation and addition of rhamnolipids on the bioremediation of the majority of PAHs was confirmed during the early stages of treatment, especially in case of the most structurally complicated compounds. The results of metagenomic analysis indicated that the initial changes in the soil metabiome caused by bioaugmentation diminished after 3 months and that the community structure in treated soil was similar to control. The survival period of bacteria introduced into the soil via bioaugmentation reached a maximum of 3 months. The increased expression of genes observed after addition of PAH into the soil also returned to the initial conditions after 3 months.

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Molecular approaches for biodegradation of polycyclic aromatic hydrocarbon compounds: a review

Cited by 109 publications

References 176 publications

Fungal community demonstrates stronger dispersal limitation and less network connectivity than bacterial community in sediments along a large river

Fungal community demonstrates stronger dispersal limitation and less network connectivity than bacterial community in sediments along a large river

Respiración Potencial Durante La Bioestimulación De Un Suelo Contaminado Con Hidrocarburos Aromáticos Policíclicos

Influence of soil contamination with PAH on microbial community dynamics and expression level of genes responsible for biodegradation of PAH and production of rhamnolipids

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