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ABSTRACT: nitrogen cycling on nosZ gene in agroecosystem

PROVIDER: PRJNA498194 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8101590_1.fastq.gz	Fastqsanger.gz
	SRR8101590_2.fastq.gz	Fastqsanger.gz
	SRR8101581_1.fastq.gz	Fastqsanger.gz
	SRR8101581_2.fastq.gz	Fastqsanger.gz
	SRR8101591_1.fastq.gz	Fastqsanger.gz

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Project description:nitrogen cycling in agroecosystem

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Project description:nitrogen cycling on nosZ gene in paddy field

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Community composition of nitrous oxide reducing bacteria investigated using a functional gene microarray

Project description:The diversity and environmental distribution of the nosZ gene, which encodes the enzyme responsible for the consumption of nitrous oxide, was investigated in marine and terrestrial environments using a functional gene microarray. The microbial communities represented by the nosZ gene probes showed strong biogeographical separation, with communities from surface ocean waters and agricultural soils significantly different from each other and from those in oceanic oxygen minimum zones. Atypical nosZ genes, usually associated with incomplete denitrification pathways, were detected in all the environments, including surface ocean waters. The abundance of nosZ genes, as estimated by quantitative PCR, was highest in the agricultural soils and lowest in surface ocean waters.

2018-10-19 | GSE121473 | GEO

Project description:nosZ gene

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Project description:Nitrogen-fixing bacterial community composition of agroecosystem biocrusts

| PRJNA1026578 | ENA

Community composition of nitrous oxide related genes and their relationship to nitrogen cycling rates in salt marsh sediments

Project description:Salt marshes provide many key ecosystem services that have tremendous ecological and economic value. One critical service is the removal of fixed nitrogen from coastal waters, which limits the negative effects of eutrophication resulting from increased nutrient supply. Nutrient enrichment of salt marsh sediments results in higher rates of nitrogen cycling and, commonly, a concurrent increase in the flux of nitrous oxide, an important greenhouse gas. Little is known, however, regarding controls on the microbial communities that contribute to nitrous oxide fluxes in marsh sediments. To address this disconnect, we generated microbial community profiles as well as directly assayed nitrogen cycling genes that encode the enzymes responsible for overall nitrous oxide flux from salt marsh sediments. We hypothesized that communities of microbes responsible for nitrogen transformations will be structured by nitrogen availability. Taxa that respond positively to high nitrogen inputs may be responsible for the elevated rates of nitrogen cycling processes measured in fertilized sediments. Our data show that, with the exception of ammonia-oxidizing archaea, the community composition of organisms responsible for production and consumption of nitrous oxide was altered under nutrient enrichment. These results suggest that elevated rates of nitrous oxide production and consumption are the result of changes in community structure, not simply changes in microbial activity.

2018-01-13 | GSE108888 | GEO

Project description:nitrogen cycling on nirK gene in paddy field

| PRJNA607001 | ENA

Project description:nitrogen cycling on nirS gene in paddy field

| PRJNA607005 | ENA

Artificial reforestation has less diverse soil nitrogen-cycling genes than natural restoration

Project description:Reforestation is effective in restoring ecosystem functions and enhancing ecosystem services of degraded land. The three most commonly employed reforestation methods of natural reforestation, artificial reforestation with native Masson pine (Pinus massoniana Lamb.), and introduced slash pine (Pinus elliottii Engelm.) plantations were equally successful in biomass yield in southern China. However, it is not known if soil ecosystem functions, such as nitrogen (N) cycling, are also successfully restored. Here, we employed a functional microarray to illustrate soil N cycling. The composition and interactions of N-cycling genes in soils varied significantly with reforestation method. Natural reforestation had more superior organization of N-cycling genes, and higher functional potential (abundance of ammonification, denitrification, assimilatory, and dissimilatory nitrate reduction to ammonium genes) in soils, providing molecular insight into the effects of reforestation.

2019-11-04 | GSE100379 | GEO

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