Bacterial communities and enzyme activities of PAHs polluted soils

Andreoni, V.; Cavalca, L.; Rao, María A.; Nocerino, G.; Bernasconi, S.; Dell’Amico, E.; Colombo, Monica; Gianfreda, Liliana

doi:10.1016/j.chemosphere.2004.06.013

Cited by 273 publications

(136 citation statements)

References 23 publications

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“…This finding highlights that a long-term pollution in an increased degree with PAHs reduces significantly the diversity of bacterial population even in presence of adequate nutrient supplies. In this context, Andreoni et al (2004) also found that a long-term exposition to PAHs manifests in a poor bacterial diversity (H' = 0.89). Additionally needs to be noted that according to Muckian et al (2007) the type of PAH ring structure has a greater influence on the bacterial community structure than total PAH concentration.…”

Section: Discussionmentioning

confidence: 75%

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Benedek

Vajna

Táncsics

et al. 2013

World J Microbiol Biotechnol

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Nowadays, because of substantial use of petroleum-derived fuels the number and extension of hydrocarbon polluted terrestrial ecosystems is in growth worldwide. In remediation of aforementioned sites bioremediation still tends to be an innovative, environmentally attractive technology. Although huge amount of information is available concerning the hydrocarbon degradation potential of cultivable hydrocarbonoclastic bacteria little is known about the in situ long-term effects of petroleum derived compounds on the structure of soil microbiota. Therefore, in this study our aim was to determine the longterm impact of total petroleum hydrocarbons (TPHs), volatile petroleum hydrocarbons (VPHs), total alkyl benzenes (TABs) as well as of polycyclic aromatic hydrocarbons (PAHs) on the structure of bacterial communities of four different contaminated soil samples. Our results indicated that a very high amount of TPH affected positively the diversity of hydrocarbonoclastic bacteria. This finding was supported by the occurrence of representatives of the a-, b-, c-Proteobacteria, Actinobacteria, Flavobacteriia and Bacilli classes. High concentration of VPHs and TABs contributed to the predominance of actinobacterial isolates. In PAH impacted samples the concentration of PAHs negatively correlated with the diversity of bacterial species. Heavily PAH polluted soil samples were mainly inhabited by the representatives of the b-, cProteobacteria (overwhelming dominance of Pseudomonas sp.) and Actinobacteria.

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Section: Discussionmentioning

confidence: 75%

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Benedek

Vajna

Táncsics

et al. 2013

World J Microbiol Biotechnol

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“…A atividade da urease foi de 17,2 µg N-NH 4 g -1 solo h -1 inferior, portanto, ao valor de 50,6 µg N-NH 4 g -1 solo h -1 , constatado em solos sob atenuação natural, encontrados por Margesin et al (2000) durante o monitoramento e avaliação de áreas impactadas com contaminantes orgânicos. Reduções na atividade da fosfatase e ausência da atividade da urease foram verificadas por Andreoni et al (2004), em solos da Alemanha e da Bélgica contaminados com hidrocarbonetos aromáticos policíclicos (HAPs), que exercem efeito tóxico sobre os microrganismos e podem recobrir a superfície das célu-las, reduzindo a interação entre os sítios de atividade enzimática e os substratos solúveis, com efeito adverso na expressão da atividade enzimática (Kiss et al, 1998, apud Andreoni et al, 2004; este fato pode explicar os baixos valores de atividade enzimática observados no solo de área de "landfarming", cuja aplicação de resíduos petroquímicos pode, ao longo de 15 anos, estar favorecendo o acúmulo de compostos poluentes recalcitrantes, como os HAPs.…”

Section: Biomassa Microbiana E Atividade Bioquímica Do Solounclassified

Biomassa, atividade microbiana e fungos micorrízicos em solo de "landfarming" de resíduos petroquímicos

Paula

Soares²,

Siqueira³

2006

Rev. bras. eng. agríc. ambient.

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RESUMOAvaliaram-se, no presente trabalho, a biomassa microbiana, atividade heterotrófica e a ocorrência de fungos micorrízi-cos arbusculares (FMAs) de um solo de área de "landfarming" de resíduo petroquímico durante 15 anos. Realizaram-se análises laboratoriais e ensaios em casa de vegetação para avaliar as condições biológicas do solo e o efeito da inoculação com FMAs (Glomus clarum e Paraglomus occultum) no crescimento de seis espécies vegetais com potencial para estabelecimento nesses solos. A biomassa microbiana e os indicadores de atividade bioquímica (respiração basal, respiração induzida por substrato e qCO 2 ) apresentaram-se em valores típicos de solos não contaminados, exceto para o qCO 2 , que foram bem elevados. Esses resultados indicam a presença de comunidades microbianas ativas mas se verificou baixa atividade das enzimas β-glicosidase, fosfatase ácida e urease, indicando interferências nos processos bioquímicos do solo o que poderá comprometer sua capacidade de transformar os resíduos. Verificou-se também a ocorrência abundante de FMAs em plantas espontâneas ou introduzidas. Foi notória a resposta positiva da inoculação com FMAs sobre o crescimento da alfafa, braquiária e sorgo, porém sem influência no crescimento do capim-elefante. Esses resultados apontam a existência de populações microbianas tolerantes aos componentes tóxicos dos resíduos petroquímicos aplicados continuamente ao solo estudado. Palavras-chave: biorremediação, enzimas, heterotróficos, micorrizasBiomass, microbial activity and mycorrhizal fungi in landfarming soil of petrochemical wastes ABSTRACTIn the present study the microbial biomass, heterotrophic activity and the occurrence of arbuscular mycorrhizal fungi (AMF) were evaluated in soil samples from a landfarming area that has been used for petrochemical waste treatment for the last fifteen years. Laboratory analysis and greenhouse assays were conducted in order to evaluate soil biological conditions and the effects of inoculation with AMF (Glomus clarum and Paraglomus occultum) on growth of six plant species with potential to establish in soil affected by oil pollutants. Values for soil microbial biomass and biochemical indicators (basal and induced soil respiration) were in the typical range found in non-contaminated soils, but the values for qCO 2 were in the high range. In spite of the indication of microbial stress, the results suggest the presence of metabolically active microbial communities in the soil. However, the relatively low activities of β-glucosidase, acid phosphatase and urease, indicate interferences on biochemical processes that may affect the degradation of residues transformation by the soil community. Abundant occurrence of AMF in either spontaneous or introduced plants was also observed. Inoculation with AMF had significant effects on alfafa, brachiaria grass and sorghum, but no effects on elephant grass. The results of the present study indicate the existence of microbial populations tolerant to the toxic components of petrochemical wastes that were co...

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“…On the other hand, there were a few studies showing PAH-degrading activities of bacteria from genus Microbacterium (Daane et al, 2001;Gauthier et al, 2003) and Rhizobium (Andreoni et al, 2004;Bodour et al, 2003). Genus Deinococcus has not been reported to have PAH-degrading activity.…”

Section: Characterization Of Phenanthrene-degrading Phyllosphere Bactmentioning

confidence: 99%

Degradation of phenanthrene on plant leaves by phyllosphere bacteria

Waight

Pinyakong

Luepromchai

2007

J. Gen. Appl. Microbiol.

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Bacterial communities and enzyme activities of PAHs polluted soils

Cited by 273 publications

References 23 publications

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Remarkable impact of PAHs and TPHs on the richness and diversity of bacterial species in surface soils exposed to long-term hydrocarbon pollution

Biomassa, atividade microbiana e fungos micorrízicos em solo de "landfarming" de resíduos petroquímicos

Degradation of phenanthrene on plant leaves by phyllosphere bacteria

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