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ABSTRACT: Effect of Zero-Valent Iron (ZVI) on nitrogen and iron metabolism in the Anammox-Hydroxyapatite (HAP) system under low-temperature shock

PROVIDER: PRJNA1067112 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27676189_1.fastq.gz	Fastqsanger.gz
	SRR27676189_2.fastq.gz	Fastqsanger.gz
	SRR27676190_1.fastq.gz	Fastqsanger.gz
	SRR27676190_2.fastq.gz	Fastqsanger.gz
	SRR27676191_1.fastq.gz	Fastqsanger.gz

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Project description:Here, we established a successive Fe0-enhanced microbe system to remove azo dye (a typical organic pollutant) by Shewanella decolorationis S12 (S. decolorationis S12, an effective azo dye degradation bacterium) and examined the gene expression time course (10, 30, 60, and 120 min) in whole genome transcriptional level. Comparing with the treatment without ZVI, approximately 8% genes affiliated with 10 different gene expression profiles in S. decolorationis S12 were significantly changed in 120 min during the ZVI-enhanced microbial azo reduction. Intriguingly, MarR transcriptional factor might play a vital role in regulating ZVI-enhanced azo reduction in the aspect of energy production, iron homeostasis, and detoxification. Further investigation showed that induced [Ni-Fe] H2ase genes (hyaABCDEF) and azoreductase genes (mtrABC-omcA) contributed to ZVI-enhanced energy production, while reduced iron uptake (hmuVCB and feoAB), induced sulfate assimilation (cysPTWA) and cysteine biosynthesis (cysM) related genes were essential to iron homeostasis and detoxification. This study disentangles underlying mechanisms of ZVI-enhanced azo reduction in S. decolorationis S12 and lays a foundation for further optimization of integrated ZVI-microbial system for efficient organic pollution treatment.

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