Characterization of soil health in an Italian polluted site by using microorganisms as bioindicators

Avidano, Lorena; Gamalero, Elisa; Cossa, G.; Carraro, Elisabetta

doi:10.1016/j.apsoil.2005.01.003

Cited by 141 publications

(80 citation statements)

References 37 publications

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“…Thus far, only few studies focused on the microbial processes that occur in geothermal plants in the context of microbiologically mediated operational failure (Sand 2003;Pryfogle 2005;Alawi et al 2011;Lerm et al 2011a, b). As microorganisms are directly influenced by their environment, they can be used as bioindicators (Avidano et al 2005;Steube et al 2009) while reflecting changes in reservoir and topside conditions caused by aquifer utilization. In this study, the microbial community structure in a deep saline aquifer in the NGB that is used for temporary aquifer heat storage was investigated.…”

Section: Introductionmentioning

confidence: 99%

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

et al. 2013

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The microbial diversity of a deep saline aquifer used for geothermal heat storage in the North German Basin was investigated. Genetic fingerprinting analyses revealed distinct microbial communities in fluids produced from the cold and warm side of the aquifer. Direct cell counting and quantification of 16S rRNA genes and dissimilatory sulfite reductase (dsrA) genes by real-time PCR proved different population sizes in fluids, showing higher abundance of bacteria and sulfate reducing bacteria (SRB) in cold fluids compared with warm fluids. The operation-dependent temperature increase at the warm well probably enhanced organic matter availability, favoring the growth of fermentative bacteria and SRB in the topside facility after the reduction of fluid temperature. In the cold well, SRB predominated and probably accounted for corrosion damage to the submersible well pump, and iron sulfide precipitates in the near wellbore area and topside facility filters. This corresponded to lower sulfate content in fluids produced from the cold well as well as higher content of hydrogen gas that was probably released from corrosion, and maybe favored growth of hydrogenotrophic SRB. This study reflects the high influence of microbial populations for geothermal plant operation, because microbiologically induced precipitative and corrosive processes adversely affect plant reliability.2

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Section: Introductionmentioning

confidence: 99%

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

et al. 2013

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“…Most methods described above focus on profiling soil microbial biomass and diversity (Table 1). These soil attributes are relatively easy to measure and have been widely associated with "soil health" [186,187]. For example, agricultural soils with low microbial biomass and diversity are linked to yield decline in sugarcane [188].…”

Section: Choice Of Methods and Complimentary Approachesmentioning

confidence: 99%

Culture-Independent Molecular Tools for Soil and Rhizosphere Microbiology

2013

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Soil microbial communities play an important role in plant health and soil quality. Researchers have developed a wide range of methods for studying the structure, diversity, and activity of microbes to better understand soil biology and plant-microbe interactions. Functional microbiological analyses of the rhizosphere have given new insights into the role of microbial communities in plant nutrition and plant protection against diseases. In this review, we present the most commonly used traditional as well as new culture-independent molecular methods to assess the diversity and function of soil microbial communities. Furthermore, we discuss advantages and disadvantages of these techniques and provide a perspective on emerging technologies for soil microbial community profiling.

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“…After extraction, the polymerase chain reaction (PCR) was performed for the amplification of the 16S-rDNA sequence (primer sequence are in Table 2). 1 µL (2 -5 ng) of extracted DNA was used as a template for PCR, using universal primers fD1 and rD1 to amplify the 16S-rRNA gene in almost its full length [25]. Conditions for each of the PCR reactions were kept as previously described [26].…”

Section: Identification Of Microorganismsmentioning

confidence: 99%

Effect of Heavy Metals on the Growth of Bacteria Isolated from Sewage Sludge Compost Tea

Vela-Cano¹,

Castellano‐Hinojosa²,

Vivas³

et al. 2014

AiM

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The amount of urban sewage sludge is increasing daily. For this reason, it is necessary to have an environmentally friendly use for this residue. Land applications in olive grove soil, poor quality soil, as a compost or a compost tea could be considered as one of the best options, because it has a high content of organic matter. However, the presence of heavy metals in some sewage sludge could be an environmental problem. In this sense, the aim of this work is to check the tolerance of the culturable microbiota present in sewage sludge compost tea to four heavy metals, Cu, Cd, Pb and Zn. Among microbiota isolated, eight strains showed high resistance to Pb, Zn, Cu and Cd, and one microbe (Rhodococcus sp.) showed a special tolerance to every heavy metal. The strains were divided into six genrera: Rhodococcus, Virgibacillus, Leifsoni, Achromobacter, Cupriavidus and Oceanobacillus sp. Finally, Rhodococcus sp. strain 3 was able to remove different amounts of heavy metals from the culture media with intracellular and surface accumulation of Cu, Zn, Pb and Cd. The application of this bacterial strain in bioremediation processes is discussed.

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Characterization of soil health in an Italian polluted site by using microorganisms as bioindicators

Cited by 141 publications

References 37 publications

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

Thermal effects on microbial composition and microbiologically induced corrosion and mineral precipitation affecting operation of a geothermal plant in a deep saline aquifer

Culture-Independent Molecular Tools for Soil and Rhizosphere Microbiology

Effect of Heavy Metals on the Growth of Bacteria Isolated from Sewage Sludge Compost Tea

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