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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.

ABSTRACT: 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.

PROVIDER: PRJNA730797 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14575440_1.fastq.gz	Fastqsanger.gz
	SRR14575440_2.fastq.gz	Fastqsanger.gz
	SRR14575441_1.fastq.gz	Fastqsanger.gz
	SRR14575441_2.fastq.gz	Fastqsanger.gz
	SRR14575442_1.fastq.gz	Fastqsanger.gz

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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.

2021-09-01 | GSE174616 | GEO

Rice roots: Non-colonized (sterile) control vs. colonized with Azoarcus olearius BH72

Project description:Transcriptional profiling of Oryza sativa japonica Nipponbare roots after 14 days post inoculation with Azoarcus olearius BH72, the goal is to understand the transcriptomic response of rice roots to colonization by bacterial endophyte

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Project description:Azoarcus olearius overview

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RNA-Seq provides new insights into the nitrogen response of Azoarcus olearius BH72 during N2-fixation beyond the nitrogen fixation process

Project description:Azoarcus olearius BH72 is a diazotrophic endophyte carrying out biological nitrogen fixation (BNF) and supplying nitrogen to its host plant. Our previous microarray approach provided insights in the transcriptome of strain BH72 under N2-fixation in comparison to ammonium-grown conditions, which already indicated induction of genes not related to the BNF process. Due to the known limitations of the technique, we might have missed additional differentially regulated genes (DEGs). Thus we used directional RNA-Seq to better comprehend the transcriptional landscape under these growth conditions. RNA-Seq detected almost 24 % of the annotated genes to be regulated, twice the amount identified by microarray. In addition to confirming entire regulated operons containing known DEGs, the new approach detected induction of genes involved in carbon metabolism and flagellar and twitching motility. On the other hand, genes encoding for proteins involved in translation and vitamin biosynthesis were detected to be suppressed. Nonetheless, strain BH72 appears not to be content with N2-fixation but is primed for alternative economic N-sources, such as nitrate, urea or amino acids: we detected strong induction of machineries for uptake and assimilation.

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Project description:Azoarcus olearius strain:dqs4 Genome sequencing

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Rice roots: Non-colonized (sterile) control vs. colonized with Azoarcus olearius BH72

Project description:Rice roots: Non-colonized (sterile) control vs. colonized with Azoarcus olearius BH72

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Azoarcus olearius

Project description: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

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A novel repressor for expression of a type 6 protein secretion system links nitrogen signaling with beneficial plant-microbe interactions

Project description:To investigate the regulon of the novel transcriptional regulator TssR discovered in our study We then performed gene expression profiling analysis using data obtained from RNA-seq of wild type Azoarcus olearius sp. BH72 and tssR deleted mutant cultured under microaerobic conditions with additional ammonium

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2023-11-02 | MSV000093274 | MassIVE

RNA-Seq provides new insights into the nitrogen response of Azoarcus olearius BH72 during N2-fixation beyond the nitrogen fixation process

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