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ABSTRACT: Alterations in the Root Endophyte Microbiome of Rice Receiving Growth-Promoting Treatments of Urea-N and Rhizobium Biofertilizer

PROVIDER: PRJNA526033 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8696233.fastq.gz	Fastqsanger.gz
	SRR8696234.fastq.gz	Fastqsanger.gz
	SRR8696235.fastq.gz	Fastqsanger.gz
	SRR8696236.fastq.gz	Fastqsanger.gz

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Rice root endophytic microbiota

Project description:Alterations in the Root Endophyte Microbiome of Rice Receiving Growth-Promoting Treatments of Urea-N and Rhizobium Biofertilizer

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Transcriptome profile of wild type Azoarcus sp. BH72 grown under microaerobic condition (0.3% oxygen) compared with that grown under aerobic condition (21% oxygen), both in presence of combined nitrogen source, respectively

Project description:Low oxygen tensions are often encountered in flooded soils of rice fields by root-associated, strictly respiratory, beta proteobacterium, Azoarcus sp. BH72 which fixes nitrogen only under microaerobic condition. In this study, genome wide oligonucleotide microarrays were used compare the global transcription profile of Azoarcus sp. BH72 under microaerobic condition with cells grown under aerobic condition, both with ammonia as sole nitrogen source. The outcome of this study will provide a better insight about the establishment of this endophyte in the microaerobic environment, probably prevailing inside of the rice root niche .

2014-09-13 | GSE61387 | GEO

urea-Urea impact on the nitrogen metabolism of plant and on the nitrogen transport systems

Project description:ra05-09_urea - urea - What are the transcriptomic plant responses to urea nitrogen supply ? - Columbia Arabidopsis ecotype were grown hydroponically on 0.5 mM NH4NO3 as sole nitrogen source during 35 days under short days. Plants were then placed on 3 nutrient solutions supplemented, either with 1 mM NH4NO3, or with 0.5 mM NH4NO3 + 0.5 mM Urea, or with 1 mM Urea. Root and shoot samples were harvested separately 7 days after these different nitrogen treatments Keywords: treated vs untreated comparison

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Transcriptomic analysis of responses to exudates reveal genes required for rhizosphere competence of the endophyte Azoarcus sp. strain BH72.

Project description:Endophytic colonization is a very complex process which is not yet completely understood. Molecules exuded by the plants may act as signals which influence the ability of the microbe to colonize the host or survive in the rhizosphere. Here we investigated whether root exudates of the host might play a role in initiating the endophyte-rice interaction. The whole genome microarray approach was used to investigate the response of the diazotrophic model endophyte, Azoarcus sp. strain BH72, to exudates of O. sativa cv. Nipponbare in order to identify differentially regulated genes. Azoarcus sp. strain BH72 was grown in the presence or absence of root exudates of Oryza sativa cv. Nipponbare for two different time points, and differences in the gene expression profile were monitored.

2012-11-30 | GSE35187 | GEO

2014-09-13 | E-GEOD-61387 | biostudies-arrayexpress

Transcriptomic analysis of responses to exudates reveal genes required for rhizosphere competence of the endophyte Azoarcus sp. strain BH72.

2012-11-30 | E-GEOD-35187 | biostudies-arrayexpress

The RNA-seq analysis of rice roots colonized by the endophytic bacterium Azoarcus olearius BH72 after one-, three- and seven-days post inoculation and after three days of boosted colonization.

Project description:Purpose: Transcriptional profiling of Oryza sativa japonica Nipponbare roots after one, three and seven days post inoculation with Azoarcus olearius BH72 (vs. non-inoculated controls) to understand the changes in transcriptomic response of rice roots to colonization by bacterial endophyte at initial stages of interaction; Additional set-up was included in which bacterial growth was boosted (through increasing 20-times carbon source - malic acid in the plant's hydroponic medium) to study rice roots transcriptome during enhanced colonization by the endophyte after three days post inoculation. Methods: Rice root mRNA profiles after one day, three days (including additional set-ups for boosted colonization), and seven days post inoculation with Azoarcus olearius BH72 and corresponding non-inoculated controls were generated by RNA sequencing, in triplicates, using Illumina NextSeq 500. Raw reads were then filtered, trimmed (PHRED > 33) and mapped onto IRGSP-1 version of Oryza sativa ssp. japonica cv. Nipponbare genome using CLC Genomics Workbench 8.5.1 (Qiagen, Germany). Expression of 17 selected genes was confirmed via RT-qPCR. Results: Using the RNA-Seq technology we obtained transcriptomic data from 24 sequencing libraries, with an average 46,181,160 clean reads per library, of which 87% or more were mapped onto the Oryza sativa ssp. japonica cv. Nipponbare IRGSP-1.0 genome (Fig. S3). We considered genes as differentially regulated (DEG) that exhibited at least 1.5-fold-change in expression level between Azo-colonized and non-colonized roots and FDR<0.05. Conclusions: Bacteria appeared to short-circuit the initial root defense responses for a compatible interaction during endophytic establishment, involving previously unknown putative rice candidate genes.

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Project description:Long oligonucleotide microarrays were used for the study of expression profile changes during seedling photomorphogenesis in rice and in Arabidopsis. Different light quality treatments were applied to seedlings. To dissect organ-specific light effects, we further profiled shoot and root organs in both species. Keywords = rice Keywords = Arabidopsis Keywords = photomorphogenesis Keywords: ordered

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Project description:Root exudates play an important role in plant-microbe interaction. The transcriptional profilings of plant growth-promoting rhizobacteria Bacillus amyloliquefaciens SQR9 in response to maize root exudates under static condition, were investigated by an Illumina RNA-seq for understanding the regulatory roles of the root exudates. 4 treatments, including 2 blank control (24 h and 48 h-post inoculation, named as 5 and 15, respectively), and 2 treatments with maize root exudates (24 h and 48 h-post inoculation, named as 7 and 17, respectively)

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RNA-Seq data used to explore transcriptional dynamics in multipartite fungus-plant interactions: Hordeum vulgare, Serendipita vermifera, Bipolaris sorokiniana

Project description:We addressed the question how the interaction between the beneficial root endophyte Serendipita vermifera (Sv) and the pathogen Bipolaris sorokiniana (Bs) affects fungal behavior and determines barley host responses using a gnotobiotic natural soil-based split-root system for phenotypic and transcriptional analyses.

2019-07-06 | GSE130517 | GEO

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