Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

ABSTRACT: Reciprocal activities of chemosynthetic and photosynthetic bacteria across a steep desert aridity gradient

PROVIDER: PRJNA657906 | ENA |

REPOSITORIES: ENA

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	SRR12473530_1.fastq.gz	Fastqsanger.gz
	SRR12473530_2.fastq.gz	Fastqsanger.gz
	SRR12473531_1.fastq.gz	Fastqsanger.gz
	SRR12473531_2.fastq.gz	Fastqsanger.gz
	SRR12473532_1.fastq.gz	Fastqsanger.gz

Items per page:

1 - 5 of 120

Similar Datasets

Aridity threshold in controlling ecosystem nitrogen cycling in arid and semi-arid grasslands

Project description:Higher aridity and more extreme rainfall events in drylands are predicted under climate change. Yet it is unclear how changing precipitation regimes may affect nitrogen (N) cycling, especially in areas with extremely high aridity. Here we investigated soil N isotopic values (M-NM-415N) along a 3200 km aridity gradient and show a hump-shaped relationship between soil M-NM-415N and aridity index (AI) with a threshold at AI=0.32. Also, using a micro-array metageomics tool named GeoChip 5.0, we showed that Variations of nitrification and denitrification gene abundance along the gradient which provide further evidence for the existence of this threshold. Data support the hypothesis that the increase of gaseous N losses is higher than the increase of net plant N accumulation with increasing AI below AI=0.32, while the opposite is favoured above this threshold. Our results suggest the importance of N-cycling microbes in extremely dry areas and the different controlling factors of N cycling on the either side of the threshold.

2014-09-03 | E-MTAB-2722 | biostudies-arrayexpress

Soil

Project description:Aridity gradient biocrust metagenomes

| PRJNA798687 | ENA

Transcriptome of transition from primary to secondary stem development in Populus

2009-01-31 | GSE13043 | GEO

Transcriptome of transition from primary to secondary stem development in Populus

Project description:The terminal region of the developing shoot provides a steep developmental gradient from primary to secondary growth that facilitates identification of the genes that play specialized functions during each of these phases of growth Keywords: Developmental series Stem internodes excluding the nodes from apex to base of the tree were sampled for RNA extraction. Two individual trees were used as biological replicates

2009-01-30 | E-GEOD-13043 | biostudies-arrayexpress

soil metagenome

Project description:Soil fungi along aridity gradient in temperate grassland

| PRJNA692553 | ENA

ExoArid

Project description:Atacama desert desiccation gradient metagenomics

| PRJEB68157 | ENA

Project description:gradient bacteria

| PRJNA818281 | ENA

Exploring the mechanism of C4 photosynthetic differentiation through a unified comparative analysis of maize and rice leaf transcriptomes

Project description:Maize and rice are the two most economically important grass crops and utilize distinct forms of photosynthesis to fix carbon: C4 and C3 respectively. Relative to C3 photosynthesis, C4 photosynthesis reduces photorespiration and affords higher water and nitrogen use efficiencies under hot arid conditions. To define key innovations in C4 photosynthesis, we profiled metabolites and gene expression along a developing leaf gradient. A novel statistical method was implemented to compare transcriptomes from these two species along a unified leaf developmental gradient and define candidate cis-regulatory elements and transcription factors driving photosynthetic gene expression. We also present comparative primary and secondary metabolic profiles along the gradients that provide new insight into nitrogen and carbon metabolism in C3 and C4 grasses. These resources, including community viewers to access and mine these datasets, will enable the elucidation and engineering of C4 photosynthetic networks to improve the photosynthetic capacity of C3 and C4 grasses.

2014-10-12 | GSE54274 | GEO

Anaerobic sulfur oxidation underlies adaptation of a chemosynthetic symbiont to oxic-anoxic interfaces

Project description:Chemosynthetic symbioses occur worldwide in marine habitats, but comprehensive physiological studies of chemoautotrophic bacteria thriving on animals are scarce. Stilbonematinae are coated by monocultures of thiotrophic Gammaproteobacteria. As these nematodes migrate through the redox zone, their ectosymbionts experience varying oxygen concentrations. Here, by applying omics, Raman microspectroscopy and stable isotope labeling, we investigated the effect of oxygen on the metabolism of Candidatus Thiosymbion oneisti. Unexpectedly, sulfur oxidation genes were upregulated in anoxic relative to oxic conditions, but carbon fixation genes and incorporation of 13C-labeled bicarbonate were not. Instead, several genes involved in carbon fixation, organic carbon assimilation and polyhydroxyalkanoate (PHA) biosynthesis, as well as nitrogen fixation and urea utilization were upregulated in oxic conditions. Furthermore, in the presence of oxygen, stress-related genes were upregulated together with vitamin biosynthesis genes likely necessary to withstand its deleterious effects, and fewer symbionts were detected to divide. Based on this first global physiological study of an uncultured chemosynthetic ectosymbiont, we propose that, in anoxic sediment, its proliferation is powered by anaerobic sulfur oxidation coupled to denitrification, whereas in upper layers it makes use of aerobic respiration to facilitate assimilation of carbon and nitrogen, and to survive oxidative stress. The ectosymbiont’s versatile metabolism is thus well-adapted to exploiting a highly changeable environment.

2020-04-30 | GSE146081 | GEO

Project description:kumtagh Desert Bacteria

| PRJNA1129877 | ENA