Archaeal community diversity in municipal waste landfill sites

Song, Liyan; Wang, Yangqing; Tang, Wei; Lei, Yu

doi:10.1007/s00253-015-6493-5

Cited by 64 publications

(38 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mechanisms involved in archaeal interactions are largely unknown, although they are very important in the archaeal communities, production of methane in landfills, 19 archaea in soil and rhizosphere ecosystems, 20 thermophilic archaea in bioleaching process, 21 for example. Virus interactions with its host are also very important since viruses are responsible for many diseases in a variety of hosts, and also, modulating the bacterial community by infecting dominant species.…”

Section: Organisms Involvedmentioning

confidence: 99%

Microbial interactions: ecology in a molecular perspective

Braga

Dourado

Araújo

2016

Brazilian Journal of Microbiology

256

136

View full text Add to dashboard Cite

The microorganism–microorganism or microorganism–host interactions are the key strategy to colonize and establish in a variety of different environments. These interactions involve all ecological aspects, including physiochemical changes, metabolite exchange, metabolite conversion, signaling, chemotaxis and genetic exchange resulting in genotype selection. In addition, the establishment in the environment depends on the species diversity, since high functional redundancy in the microbial community increases the competitive ability of the community, decreasing the possibility of an invader to establish in this environment. Therefore, these associations are the result of a co-evolution process that leads to the adaptation and specialization, allowing the occupation of different niches, by reducing biotic and abiotic stress or exchanging growth factors and signaling. Microbial interactions occur by the transference of molecular and genetic information, and many mechanisms can be involved in this exchange, such as secondary metabolites, siderophores, quorum sensing system, biofilm formation, and cellular transduction signaling, among others. The ultimate unit of interaction is the gene expression of each organism in response to an environmental (biotic or abiotic) stimulus, which is responsible for the production of molecules involved in these interactions. Therefore, in the present review, we focused on some molecular mechanisms involved in the microbial interaction, not only in microbial–host interaction, which has been exploited by other reviews, but also in the molecular strategy used by different microorganisms in the environment that can modulate the establishment and structuration of the microbial community.

show abstract

Section: Organisms Involvedmentioning

confidence: 99%

Microbial interactions: ecology in a molecular perspective

Braga

Dourado

Araújo

2016

Brazilian Journal of Microbiology

256

136

View full text Add to dashboard Cite

show abstract

“…Methanogens reside in many anaerobic environments, such as sediments, digesters and municipal waste landfill sites (Garcia et al, 2000;Song et al, 2015), and are a difficult group to isolate or culture under laboratory conditions (Enitan et al, 2014;Pervin et al, 2013). Therefore, the development of molecular methods that are independent from cultivation is gaining importance.…”

Section: Introductionmentioning

confidence: 99%

Methanogenic community composition in an organic waste mixture in an anaerobic bioreactor

Gryta¹,

Oszust²,

Brzezińska³

et al. 2017

International Agrophysics

View full text Add to dashboard Cite

A b s t r a c t. The aim of the study was to elucidate the substantial relationship between the compositions of methanogen community that assembles in the anaerobic digester mass and link it to methane production activity. The results of the metagenomic studies were used to evaluate how the methanogen structure changes during an anaerobic digestion process under various waste retention times (21, 23, 25, 29, 33, 39, 47 and 61 days). Phylogenetically coherent populations of methanogens were assessed by 16S rRNA gene next-generation sequencing and terminal restriction fragment length polymorphism fingerprinting of a specific molecular marker, the mcrA gene. The results indicated multiple phylogenetically diverse methanogen populations associated with the various steps of anaerobic digestion. The stages of the anaerobic digestion process and waste retention times determine the microbial composition. The most dominant and acclimated microbial communities in all samples belonged to the genera Methanosaeta and Methanobacterium. The methane yield was consistent with the results of the microbial community structure, which indicated that acetotrophic Methanosaeta was the most active and most important during the methanogenic stage.K e y w o r d s: anaerobic digestion, methanogenic activity, methanogenic Archaea, NGS, t-RFLP

show abstract

“…Refuse sample for Pseudomonas isolation was obtained from Jiangchungou (JCG) landfill, Xian, China in 15 September 2013. Early study indicated that the relative abundance of Pseudomonas was 8.0 % of the total bacteria (total 18062 well treated sequences) in JCG landfill leachate [4]. Refuse were cored using the same protocol as leachate sampling [4].…”

Section: Methodsmentioning

confidence: 99%

“…In our recent study we showed that genus Pseudomonas was dominant at landfill leachate by 454 pyrosequencing (accounting for 40.9% to 92.4% of total abundance of bacteria) [4] as well as at landfill refuse (data not shown) by Illumina pyrosequencing. Xie et al [8] also found that Pseudomonas is important in aged refuse for leachate treatment by 454 pyrosequencing.…”

Section: Introductionmentioning

confidence: 90%

See 1 more Smart Citation

Denitrification in municipal waste landfill by Pseudomonas stutzeri P-1-5

Wang¹,

Song²,

Lei³

2016

Proceedings of the 2016 International Conference on Civil, Transportation and Environment

Self Cite

View full text Add to dashboard Cite

Although in situ denitrification has been well documented in landfills, few studies have paid attention on the denitrifier in landfills who dominates this process. In this study, a strain P-1-5 was isolated from landfill by Pseudomonas selecting medium and identified as Pseudomonas stutzeri by 16S rRNA gene sequencing. P-1-5 could use many carbon sources as well as sodium salt of caboxy methyl cellulose. When the initial concentration of nitrate was 415.8 mg/L, the strain completely removed nitrate within 16 h under aerobic condition and 93.1 % nitrate within 48 h under anaerobic condition. The strain is a denitrifer and the optimal culture conditions for nitrate remove was sodium succinate as carbon source, C/N 8，pH 7, and 30 °C. Results of this study provides the direct evidence that Pseudomonas plays important role in nitrogen cycle and insights for the increased understanding of nitrogen management in landfill.

show abstract

Archaeal community diversity in municipal waste landfill sites

Cited by 64 publications

References 57 publications

Microbial interactions: ecology in a molecular perspective

Microbial interactions: ecology in a molecular perspective

Methanogenic community composition in an organic waste mixture in an anaerobic bioreactor

Denitrification in municipal waste landfill by Pseudomonas stutzeri P-1-5

Contact Info

Product

Resources

About