Molecular biological characterization and biostimulation of ammonia-oxidizing bacteria in brackishwater aquaculture

Krishnani, Kishore Kumar; Shekhar, M. S.; Gopikrishna, G.; Gupta, B. P.

doi:10.1080/10934520903263637

Cited by 18 publications

(9 citation statements)

References 32 publications

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“…Krishnani et al (2009) have used molecular methods based on sequencing of clone libraries to provide sequence and the phylogenetic information of ammonia oxidizing bacteria (AOB). Ammonia monooxygenase (amoA) gene, which catalyzed the oxidation of ammonia to hydroxyl amine in the initial rate-determining step of nitrification was targeted for detection and characterization of AOB using gene-specific primers.…”

Section: Biostimulationmentioning

confidence: 99%

A comprehensive overview of elements in bioremediation

Juwarkar

Singh

Mudhoo

2010

Rev Environ Sci Biotechnol

305

128

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Sustainable development requires the development and promotion of environmental management and a constant search for green technologies to treat a wide range of aquatic and terrestrial habitats contaminated by increasing anthropogenic activities. Bioremediation is an increasingly popular alternative to conventional methods for treating waste compounds and media with the possibility to degrade contaminants using natural microbial activity mediated by different consortia of microbial strains. Many studies about bioremediation have been reported and the scientific literature has revealed the progressive emergence of various bioremediation techniques. In this review, we discuss the various in situ and ex situ bioremediation techniques and elaborate on the anaerobic digestion technology, phytoremediation, hyperaccumulation, composting and biosorption for their effectiveness in the biotreatment, stabilization and eventually overall remediation of contaminated strata and environments. The review ends with a note on the recent advances genetic engineering and nanotechnology have had in improving bioremediation. Case studies have also been extensively revisited to support the discussions on biosorption of heavy metals, gene probes used in molecular diagnostics, bioremediation studies of contaminants in vadose soils, bioremediation of oil contaminated soils, bioremediation of contaminants from mining sites, air sparging, slurry phase bioremediation, phytoremediation studies for pollutants and heavy metal hyperaccumulators, and vermicomposting.

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Section: Biostimulationmentioning

confidence: 99%

A comprehensive overview of elements in bioremediation

Juwarkar

Singh

Mudhoo

2010

Rev Environ Sci Biotechnol

305

128

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“…Ammonia-rich ecosystems generally demonstrate the habitual predominance of Nitrosomonas sp. [6,51]. The bacterial amoA gene sequences showed 99% identity to uncultured AOB.…”

Section: Functional Gene Analyses Of Ammonia Oxidizers In Zwe Pondmentioning

confidence: 99%

Molecular characterization of bacteria and archaea in a bioaugmented zero-water exchange shrimp pond

et al. 2021

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In the zero-water exchange shrimp culture pond maintained with the application of indigenous bioaugmentor, low levels of total ammonia–nitrogen were reported, indicating the relevance of indigenous microbial communities. Sediments (0–5 cm layer) were sampled from the pond (85th day) and the bacterial and archaeal communities; specifically, the ammonia oxidizers (ammonia-oxidizing bacteria, ammonia-oxidizing archaea, and anaerobic ammonia-oxidizing bacteria) in the sediment metagenome of the pond were analysed using the 16S rRNA and functional genes. Bacterial and archaeal 16S rRNA genes showed the relative abundance of Delta-Proteobacteria and Bacteroidetes groups performing sulphur respiration and organic matter degradation, archaeal groups of anaerobic sulphur respiring Crenarchaeotae, and chemolithoautotrophic ammonia oxidizers belonging to Thaumarchaeota. The presence of these diverse bacterial and archaeal communities denotes their significant roles in the cycling the carbon, nitrogen, and sulphur thereby bringing out efficient bioremediation in the bioaugmented zero-water exchange shrimp culture pond. Similarly, the functional gene-specific study showed the predominance of Nitrosomonas sp. (ammonia-oxidizing bacteria), Nitrosopumilus maritimus (ammonia-oxidizing archaea), and Candidatus Kuenenia (anaerobic ammonia-oxidizing bacteria) in the system, which points to their importance in the removal of accumulated ammonia. Thus, this study paves the way for understanding the microbial communities, specifically the ammonia oxidizers responsible for maintaining healthy and optimal environmental conditions in the bioaugmented zero-water exchange shrimp culture pond.

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“…Whole community DNA based studies have been used to reveal microbial diversity of particular functional groups of microbes in environmental samples on the basis of functional gene markers. Many functional gene markers, namely, gene soxB (unique gene to sulphur oxidizing bacteria) [ 37 ] and ammonia monooxygenase, amoA (unique to ammonia oxidizing microbes) [ 38 ], have been applied to ascertain the diversity of these functional groups of microbes in environmental samples.…”

Section: Metagenomics: Inception Landmarks and Progressionmentioning

confidence: 99%

Metagenomics: Retrospect and Prospects in High Throughput Age

Kumar

Krishnani

Bhushan

et al. 2015

Biotechnology Research International

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In recent years, metagenomics has emerged as a powerful tool for mining of hidden microbial treasure in a culture independent manner. In the last two decades, metagenomics has been applied extensively to exploit concealed potential of microbial communities from almost all sorts of habitats. A brief historic progress made over the period is discussed in terms of origin of metagenomics to its current state and also the discovery of novel biological functions of commercial importance from metagenomes of diverse habitats. The present review also highlights the paradigm shift of metagenomics from basic study of community composition to insight into the microbial community dynamics for harnessing the full potential of uncultured microbes with more emphasis on the implication of breakthrough developments, namely, Next Generation Sequencing, advanced bioinformatics tools, and systems biology.

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Molecular biological characterization and biostimulation of ammonia-oxidizing bacteria in brackishwater aquaculture

Cited by 18 publications

References 32 publications

A comprehensive overview of elements in bioremediation

A comprehensive overview of elements in bioremediation

Molecular characterization of bacteria and archaea in a bioaugmented zero-water exchange shrimp pond

Metagenomics: Retrospect and Prospects in High Throughput Age

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