Ontology highlight
ABSTRACT:
PROVIDER: PRJNA689237 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13342238.fastq.gz | Fastqsanger.gz | |||
| SRR13342239.fastq.gz | Fastqsanger.gz | |||
| SRR13342240.fastq.gz | Fastqsanger.gz | |||
| SRR13342241.fastq.gz | Fastqsanger.gz | |||
| SRR13342242.fastq.gz | Fastqsanger.gz |
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Project description:The anaerobic digestion microbiomes has been puzzling us since the dawn of molecular methods for mixed microbial community analysis. Monitoring of the anaerobic digestion microbiome can either take place via a holistic evaluation of the microbial community through fingerprinting or by targeted monitoring of selected taxa. Here, we compared four different microbial community fingerprinting methods, i.e., amplicon sequencing, metaproteomics, metabolomics and phenotypics, in their ability to reflect the full-scale anaerobic digestion microbiome. The phenotypic fingerprinting reflects a, for anaerobic digestion, novel, single cell-based approach of direct microbial community fingerprinting. Three different digester types, i.e., sludge digesters, digesters treating agro-industrial waste and dry anaerobic digesters reflected different operational parameters. The α-diversity analysis yielded inconsistent results, especially for richness, across the different methods. In contrast, β-diversity analysis resulted in comparable profiles, even when translated into phyla or functions, with clear separation of the three digester types. In-depth analysis of each method's features i.e., operational taxonomic units, metaproteins, metabolites, and phenotypic traits, yielded certain similar features yet, also some clear differences between the different methods, which was related to the complexity of the anaerobic digestion process. In conclusion, phenotypic fingerprinting is a reliable, fast method for holistic monitoring of the anaerobic digestion microbiome, and the complementary identification of key features through other methods could give rise to a direct interpretation of anaerobic digestion process performance.
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Project description:Investigation of whole genome gene expression level changes in a Shewanella oneidensis MR-1 to Fe nanoparticle decorated anodes, compared to the carbon plate anodes in microbial electrolysis cells. Whole genome microarray analysis of the gene expression showed that the encoding biofilm formation genes were significantly up-regulated as response to nanoparticle decorated anodes which indicated thickness improvements contributed to enhance current density. The increased expression genes related to nanowire, flavins and c-type cytochromes also have partially contributed to enhance current density by Fe nanoparticle decorated anode. The majority of additional differentially expressed genes associated with electron transport, anaerobic metabolism in response to the nanostructured anodes possibly play roles in current density enhancement. A six chip study using total RNA recovered from three separate replicates of biofilm on Fe Nanoparticle decorated anode of Shewanella oneidensis MR-1 and three separate replicates of carbon plate control. Each chip measures the expression level of 4,295 genes .
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