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Transcriptomics of Bacillus amyloliquefaciens SQR9 to maize root exudates

ABSTRACT: 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.

ORGANISM(S): Bacillus amyloliquefaciens

PROVIDER: GSE54987 | GEO | 2014/11/01

SECONDARY ACCESSION(S): PRJNA238210

REPOSITORIES: GEO

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Transcriptomics of Bacillus amyloliquefaciens SQR9 to maize root exudates

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)

2014-11-01 | E-GEOD-54987 | biostudies-arrayexpress

maize seed exudates - B. amyloliquefaciens FZB42

Project description:The effect of maize seed (Zea mays L. var. Surprise) exudates on Bacillus amyloliquefaciens FZB42 cultures grown to OD600 = 1.0 or 3.0 was tested against a negative seed exudate control sample.

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Bacillus amyloliquefaciens FZB42 maize root exudate treatment

Project description:The transcriptomic response of Bacillus amyloliquefaciens FZB42 to maize root exudates at OD600=3.0. This is a comprehensive analysis using the data of six microarray experiments (Exp1-2-3 and ExpABC respectively, 18 hybridization in total).

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2013-03-11 | E-MEXP-3795 | biostudies-arrayexpress

SigD vs WT in both SE and RS media

Project description:Bacillus amyloliquefaciens FZB42 is a well-studied Gram-positive plant growth-promoting rhizobacteria. In this work we aim to study the effect of the effect of sigD deletion on the transcriptome of FZB42. The transcritomes were compared by two-color microarray of the sigD- mutant and the wildtype of B. amyloliquefaciens FZB42 grown in 1C medium supplemented with soil extract (SE) and in 1C medium supplemented with both SE and maize root exudates (RE). This submission includes data from three independent experiments with three biological replicates. Here a biological replicate means the bacterial culture from one flask used for RNA preparation. The samples were collected by two performers. The experiments were varied in sample performer, the date of the experiment.

2017-07-05 | E-MTAB-4636 | biostudies-arrayexpress

Differential gene expression of endosphere and soil Bacillus mycoides isolate in response to root exudates using RNA sequencing

Project description:In general, the endosphere isolate EC18 showed more numbers of genes significantly altered in the presence of root exudates than the soil isolate SB8 . Some of the altered genes in the two strains showed overlap. Some of these genes were previously reported to be involved in microbe-plant interactions, such as organic substance metabolism, oxidation reduction, transmembrane transportation and a subset with putative or unknown function. It was also found some genes showed opposite trend among the two strains.

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Rhizophagus irregularis gene regulation in response to rice root exudates

Project description:Purpose: The recent publication of the fungal mutualist R. irregularis genome facilitated transcriptomic studies. We here adress the gene regulation of R. irregularis in response to root exudates from rice wild-type and osnope1 (no perception candidate - mutant unable to host arbuscular mycorrhizal fungi) Methods: Spores of R. irregularis were treated with root exudates and collected at 1 hour, 24 hours and 7 days after addition. To monitor fungal gene regulation, control conditions were also prepared at T0, 1h, 24h and 7d. mRNA were sequenced by HiSeq Illumina. Reads were mapped on the Rhizophagus irregularis genome assembly (Gloin1 - Tisserant et al., PNAS, 2013) using CLCworkbench suite. Results: -At 1h, a set of 92 fungal genes were found up-regulated in response to wt root exudates (92), not to osnope1 root exudates, many of them being involved in cell signaling. -At 24h and 7d, numerous genes putatively involved in primary metabolism were up-regulated in response to wt root exudates, not in response to osnope1 root exudates -Several vital genes involved in cell development are repressed in response to osnope1 RE compared to wt RE. Conclusions: these results argue for a high metabolic activity induced by wt root exudates, not by osnope1 root exudates.

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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

Transcription profiling by array of Bacillus amyloliquefaciens FZB42 wildtype and sigD- mutants grown in media supplemented with soil extract

Project description:Bacillus amyloliquefaciens FZB42 is a well-studied Gram-positive plant growth-promoting rhizobacteria. In this work we aim to study the effect of the effect of sigD deletion on the transcriptome of FZB42. The transcritomes were compared by two-color microarray of the sigD- mutant and the wildtype of B. amyloliquefaciens FZB42 grown in 1C medium supplemented with soil extract (SE). This submission includes data from two independent experiments with three biological replicates. Here a biological replicate means the bacterial culture from one flask used for RNA preparation. The samples were collected by two performers. The experiments were varied in sample performer, the date of the experiment.

2017-06-20 | E-MTAB-4876 | 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

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