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Occurrence and diversity of both bacterial and fungal communities in dental unit waterlines (DUWL) subjected to disinfectants

ABSTRACT: Occurrence and diversity of both bacterial and fungal communities in dental unit waterlines (DUWL) subjected to disinfectants

PROVIDER: PRJEB12425 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR1213960.fastq.gz	Fastqsanger.gz
	ERR1213951.fastq.gz	Fastqsanger.gz
	ERR1213961.fastq.gz	Fastqsanger.gz
	ERR1213952.fastq.gz	Fastqsanger.gz
	ERR1213962.fastq.gz	Fastqsanger.gz

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Density and diversity of bacterial and fungal communities in dental unit waterlines (DUWL) subjected to disinfectants

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Project description:The goals of this study are to use Next-generation sequencing (NGS) to detect bacterial mRNA profiles of wild-type A.baylyi ADP1, and its mRNA response under the exposure of two disinfectants, chloramine and free chlorine. The concentrations 10 mg/L. The group without dosing disinfectants was the control group. Each concentration was conducted in triplicate. By comparing the mRNA profiles of experimental groups and control group, the effects of these two disinfectants on transcriptional levels can be revealed. Illumina HiSeq 2500 was applied. The NGS QC toolkit (version 2.3.3) was used to treat the raw sequence reads to trim the 3’-end residual adaptors and primers, and the ambiguous characters in the reads were removed. Then, the sequence reads consisting of at least 85% bases were progressively trimmed at the 3’-ends until a quality value ≥ 20 were kept. Downstream analyses were performed using the generated clean reads of no shorter than 75 bp. The clean reads of each sample were aligned to the A.baylyi ADP1 reference genome (NC_005966.1), using SeqAlto (version 0.5). Cufflinks (version 2.2.1) to calculate the strand-specific coverage for each gene, and to analyze the differential expression in triplicate bacterial cell cultures. The statistical analyses and visualization were conducted using CummeRbund package in R. (http://compbio.mit.edu/cummeRbund/). Gene expression was calculated as fragments per kilobase of a gene per million mapped reads (FPKM, a normalized value generated from the frequency of detection and the length of a given gene.

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