— Chlordane Biodegradation Under Aerobic Conditions by Actinobacteria Strains

doi:10.1201/b14776-15

Cited by 3 publications

(2 citation statements)

References 111 publications

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“…Within this group, the best studied naphthalene dioxygenase is plasmid encoded in Pseudomonas putida NCIB 9816-4 (Dennis and Zylstra 2004 ). Grampositive bacteria are also able to degrade PAH (von der Weid et al 2007 ;Kim et al 2010 ;Alvarez and Silva 2013 ), but little is known about the genes involved in the process (Kosono et al 1997 ;Kim et al 2007 ). Other distantly related genes involved in PAH degradation have been described in marine bacteria.…”

Section: Polycyclic Aromatic Hydrocarbonmentioning

confidence: 96%

Molecular Markers in Hydrocarbon Degradation: State of the Art and Prospective in South America

Lanfranconi

Alvarez

2014

Bioremediation in Latin America

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In South America petroleum production is one of the principal economic resources for various countries. Although petroleum and its derivatives fuel daily life, the major concern to their use is related to the high environmental risk of oil spills. Whether it is a large and acute or small and frequent exposure, the ecosystem must adapt to the scenario and rely on those microorganisms capable of regenerating the system. Bacteria have a central role in bioremediation and different catabolic pathways involved in saturated and aromatic hydrocarbons removal have been identifi ed from isolated strains. The traditional isolation and pure cultivation approach allows a thorough physiological study of the process occurring in these strains. However, the accuracy in linking composition to function using this approach is debatable. Culture-independent techniques applied to the metabolism of components of petroleum can be used to discover novel genes and catabolic routes directly from the environment. This chapter presents an updated overview of different approaches and molecular markers used in hydrocarbon degradation in coasts from South America as well as those methods already used outside the geographic scope of this work that still need to be acknowledged in this region.

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Section: Polycyclic Aromatic Hydrocarbonmentioning

confidence: 96%

Molecular Markers in Hydrocarbon Degradation: State of the Art and Prospective in South America

Lanfranconi

Alvarez

2014

Bioremediation in Latin America

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“…This makes Rhodococcus able to assimilate a wide range of organic compounds: linear and branched alkanes C 2 -C 30 , cycloalkanes, benzene and its homologs, polycyclic aromatic hydrocarbons (PAHs), phenols, aromatic acids and their derivatives, halogenated hydrocarbons, including polychlorinated biphenyls (PCBs), nitriles, esters, isoprenoids, organic sulfides, nitrosubstituted organic compounds, N-and S-heterocyclic compounds, and synthetic polymers [16,18,21,24,[34][35][36][37][38]. Rhodococcus strains are used for detoxification of dangerous chemicals, for example PAHs, PCBs, explosives, pharmaceuticals, endocrine disruptors, and pulp and paper wastes [18,20,21,34,[38][39][40], in bioremediation [19,41] and plastic biodegradation [36,42,43]. Remarkably, rhodococci can attack polyethylene, one of the most abundantly produced and recalcitrant synthetic polymers [44].Concerning biosynthetic capabilities of Rhodococcus, they are able to produce glycolipid biosurfactants [17,45,46], triacylglycerols [47], and polyhydroxyalkanoates (PHAs) [48,49].…”

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confidence: 99%

Advanced Rhodococcus Biocatalysts for Environmental Biotechnologies

2019

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The review is devoted to biocatalysts based on actinobacteria of the genus Rhodococcus, which are promising for environmental biotechnologies. In the review, biotechnological advantages of Rhodococcus bacteria are evaluated, approaches used to develop robust and efficient biocatalysts are discussed, and their relevant applications are given. We focus on Rhodococcus cell immobilization in detail (methods of immobilization, criteria for strains and carriers, and optimization of process parameters) as the most efficient approach for stabilizing biocatalysts. It is shown that advanced Rhodococcus biocatalysts with improved working characteristics, enhanced stress tolerance, high catalytic activities, human and environment friendly, and commercially viable are developed, which are suitable for wastewater treatment, bioremediation, and biofuel production.

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The effect of oil spills on the bacterial diversity and catabolic function in coastal sediments: a case study on the Prestige oil spill

Acosta-González

Abercron

Rosselló‐Móra

et al. 2015

Environ Sci Pollut Res

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The accident of the Prestige oil tanker in 2002 contaminated approximately 900 km of the coastline along the northern Spanish shore, as well as parts of Portugal and France coast, with a mixture of heavy crude oil consisting of polycyclic aromatic hydrocarbons, alkanes, asphaltenes and resins. The capacity of the autochthonous bacterial communities to respond to the oil spill was assessed indirectly by determining the hydrocarbon profiles of weathered oil samples collected along the shore, as well as through isotope ratios of seawater-dissolved CO2, and directly by analyses of denaturing gradient gel electrophoresis fingerprints and 16S rRNA gene libraries. Overall, the results evidenced biodegradation of crude oil components mediated by natural bacterial communities, with a bias towards lighter and less substituted compounds. The changes observed in the Proteobacteria, the most abundant phylum in marine sediments, were related to the metabolic profiles of the sediment. The presence of crude oil in the supratidal and intertidal zones increased the abundance of Alpha- and Gammaproteobacteria, dominated by the groups Sphingomonadaceae, Rhodobacteraceae and Chromatiales, whilst Gamma- and Deltaproteobacteria were more relevant in subtidal zones. The phylum Actinobacteria, and particularly the genus Rhodococcus, was a key player in the microbial response to the spill, especially in the degradation of the alkane fraction. The addition of inorganic fertilizers enhanced total biodegradation rates, suggesting that, in these environments, nutrients were insufficient to support significant growth after the huge increase in carbon sources, as evidenced in other spills. The presence of bacterial communities able to respond to a massive oil input in this area was consistent with the important history of pollution of the region by crude oil.

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— Chlordane Biodegradation Under Aerobic Conditions by Actinobacteria Strains

Cited by 3 publications

References 111 publications

Molecular Markers in Hydrocarbon Degradation: State of the Art and Prospective in South America

Molecular Markers in Hydrocarbon Degradation: State of the Art and Prospective in South America

Advanced Rhodococcus Biocatalysts for Environmental Biotechnologies

The effect of oil spills on the bacterial diversity and catabolic function in coastal sediments: a case study on the Prestige oil spill

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