GEO DataSets

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

60 Samples

Download data: CEL

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Sinorhizobium meliloti; Medicago truncatula; Medicago sativa

Type:

Expression profiling by array

Platform:

GPL4652

114 Samples

Download data: CEL

(Submitter supplied) Legumes interact with soil fungi, leading to the development of arbuscular mycorrhizal (AM) roots. Diffusible AM fungal signals were identified as sulphated and non-sulphated LCOs (sMyc-LCOs and nsMyc-LCOs). Applying Myc-LCOs on roots of symbiotic mutants, we used GeneChips to detail the global programme of gene expression in these mutants in response to the external application of Myc-LCOs. Keywords: Expression profiling by array

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

48 Samples

Download data: CEL

(Submitter supplied) Legumes interact with rhizobia, leading to the development of root nodules. Diffusible rhizobial signals were identified as Nod-LCOs. Applying Nod-LCOs on plantlet roots, we used GeneChips to detail the global programme of gene expression in response to the external application of Nod-LCOs.

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

30 Samples

Download data: CEL

(Submitter supplied) Legumes interact with soil fungi, leading to the development of arbuscular mycorrhizal (AM) roots. Diffusible AM fungal signals were identified as sulphated and non-sulphated LCOs (sMyc-LCOs and nsMyc-LCOs). Applying Myc-LCOs on roots of symbiotic mutants, we used GeneChips to detail the global programme of gene expression in these mutants in response to the external application of Myc-LCOs.

Organism:

Medicago sativa; Medicago truncatula; Sinorhizobium meliloti

Type:

Expression profiling by array

Platform:

GPL4652

24 Samples

Download data: CEL

(Submitter supplied) Legumes interact with soil microbes, leading to the development of nitrogen-fixing root nodules and arbuscular mycorrhizal (AM) roots. While nodule initiation by diffusible lipochitooligosaccharide (LCO) Nod-factors of bacterial origin (Nod-LCOs) is well characterized, diffusible AM fungal signals were only recently identified as sulphated and non-sulphated LCOs (sMyc-LCOs and nsMyc-LCOs). Applying Myc-LCOs in parallel to Nod-LCOs, we used GeneChips to detail the global programme of gene expression in response to the external application of symbiotic LCOs.

Organism:

Medicago sativa; Medicago truncatula; Sinorhizobium meliloti

Type:

Expression profiling by array

Platform:

GPL4652

36 Samples

Download data: CEL

(Submitter supplied) Many plants associate with arbuscular mycorrhizal fungi for nutrient acquisition, while legumes also associate with nitrogen-fixing rhizobial bacteria. Both associations rely on symbiosis signaling and here we show that cereals can perceive lipochitooligosaccharides (LCOs) for activation of symbiosis signaling, surprisingly including Nod factors produced by nitrogen-fixing bacteria. However, legumes show stringent perception of specifically decorated LCOs, that is absent in cereals. more...

Organism:

Hordeum vulgare; Medicago truncatula

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL30272 GPL29652

90 Samples

Download data: TSV

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

15 Samples

Download data: CEL

(Submitter supplied) Arbuscular mycorrhiza (AM) interactions between plants and Glomeromycota fungi primarily support phosphate aquisition of most terrestrial plant species. To unravel cell-type specific gene expression during late stages of Medicago truncatula root colonization by AM fungi, we used genome-wide transcriptome profiling based on laser-microdissected cells. We used Medicago GeneChips to detail the cell-type specific programme of gene expression in late stages of colonization by arbuscular mycorrhizal fungi and identified genes differentially expressed during these stages.

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

9 Samples

Download data: CEL

(Submitter supplied) Arbuscular mycorrhiza (AM) interactions between plants and Glomeromycota fungi primarily support phosphate aquisition of most terrestrial plant species. To unravel cell-type specific gene expression during early stages of Medicago truncatula root colonization by AM fungi, we used genome-wide transcriptome profiling based on laser-microdissected cells. We used Medicago GeneChips to detail the cell-type specific programme of gene expression in early stages of colonization by arbuscular mycorrhizal fungi and identified genes differentially expressed during these stages.

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

6 Samples

Download data: CEL

(Submitter supplied) Arbuscular mycorrhiza (AM) interactions between plants and Glomeromycota fungi primarily support phosphate aquisition of most terrestrial plant species. To unravel gene expression in Medicago truncatula root colonization by AM fungi, we used genome-wide transcriptome profiling based on whole mycorrhizal roots. We used GeneChips to detail the global programme of gene expression in response to colonization by arbuscular mycorrhizal fungi and in response to a treatment with phosphate and identified genes differentially expressed during this process.

Organism:

Medicago sativa; Medicago truncatula; Sinorhizobium meliloti

Type:

Expression profiling by array

Platform:

GPL4652

12 Samples

Download data: CEL

(Submitter supplied) Arbuscular mycorrhiza (AM) interactions between plants and Glomeromycota fungi primarily support phosphate aquisition by the host. To unravel the role of the AM-specific GRAS transcription factors MtGras1 and MtRam1, we performed genome-wide transcriptome profiling in RNAi-mediated MtGras1 knockdown and MtRam1 (ram1-1) mutant roots. Specifically, we used GeneChip Medicago Transcriptome Assays to identify genes differentially regulated in mycorrhizal MtGras1 knockdown or MtRam1 (ram1-1) mutant roots in comparison to control roots.

Organism:

Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL24480

12 Samples

Download data: CEL

(Submitter supplied) Aim: compare the transcriptionnal responses induced by mycorrhiza in wild type and GRAS transcription factor RAM1 mutant ram1-2 in roots. Results: 650 genes were upregulated in mycorrhized WT (fold change >5; FDR<0,05, experiment difference>10) and 201 in the ram1 mutant. 182 genes were induced in both WT and ram1. 468 and 19 genes were induced only in WT or ram1-2 respectively. 91 genes were downregulated in mycorrhized WT (fold change <5; FDR<0,05, experiment difference>10) and 51 in ram1-2. more...

Organism:

Petunia x hybrida

Type:

Expression profiling by high throughput sequencing

Platform:

GPL20694

12 Samples

Download data: XLS

(Submitter supplied) Legume GRAS-type transcription factors NSP1 and NSP2 are essential for Rhizobium Nod factor-induced nodulation. Both proteins are considered to be Nod factor response factors regulating gene expression upon symbiotic signalling. However, legume NSP1 and NSP2 can be functionally replaced by non-legume orthologs; including rice (Oryza sativa) OsNSP1 and OsNSP2. This shows that both proteins are functionally conserved in higher plants, suggesting an ancient function that was conserved during evolution. more...

Organism:

Medicago sativa; Medicago truncatula; Sinorhizobium meliloti

Type:

Expression profiling by array

Platform:

GPL4652

9 Samples

Download data: CEL

(Submitter supplied) The involvement of ROS in the legume – Rhizobium symbiotic interaction has been highlighted (Santos et al., 2001; Rubio et al., 2004). This interaction is characterized by the formation of a new organ on the root, the nodule and by the penetration, in parallel, of the bacteria into the root tissue via an infection thread (IT) (Parniske and Downie, 2003; Gage, 2004). H2O2 production has been shown in ITs during the Medicago – Sinorhizobium meliloti interaction (Santos et al., 2001). more...

Organism:

Medicago sativa; Medicago truncatula; Sinorhizobium meliloti

Type:

Genome variation profiling by SNP array

Platform:

GPL4652

8 Samples

Download data: CEL

(Submitter supplied) Plant species posses a special set of genes functional only in arbuscular mycorrhizal symbiosis. So, the model plant Medicago truncatula (Jemalong 5) was used for transcriptome comparative analysis while infected with compatible rhizobia Sinorhizobium meliloti (strain 10) and with or without arbuscular mycorrhizal fungus Rhizophagus irregularis (SYM5). Whole shoot and whole root were used for RNA isolation and processed via one of the European certified Affymetrix core labs (http://core.img.cas.cz).

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

12 Samples

Download data: CEL, CHP

(Submitter supplied) affy_ralstonia_medicago - Ralstonia solanacearum is the causal agent of the devastating bacterial wilt disease. Its infection process was studied with an in vitro inoculation procedure on intact roots of Medicago truncatula. The pathosystem involved susceptible A17 and resistant F83005.5 M truncatula lines infected with the pathogenic strain GMI1000. The mutant A17 line, Sickle, which showed a resistant phenotype was also part of the experiment. more...

Organism:

Sinorhizobium meliloti; Medicago sativa; Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4652

27 Samples

Download data: CEL

(Submitter supplied) For transcript analysis of responses in Medicago truncatula to its symbiont Sinorhizobium meliloti wild type or the succinoglycan-deficient exoY mutant we compared transcripts from line A17 roots inoculated with 25 mL OD = 0.05 S. meliloti wild type or exoY mutant. Keywords: 1 line; 2 S. meliloti samples

Organism:

Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL4799

6 Samples

Download data

(Submitter supplied) We would like to know how symbiotic molecules such as Nod Factors (NF) influence lateral root (LR) development in M. truncatula. We have preliminary evidence that this action is through early stages of root development. Auxin is the major phytohormone controlling LR development and we also have evidence that NF interfere with auxin for the control of LR development. This transcriptomic study aims at finding new molecular targets that would be responsive to auxin and NF treatment, even at a higher level by the combination of both auxin and NF. more...

Organism:

Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL17428

24 Samples

Download data: PAIR

(Submitter supplied) Arbuscular mycorrhizas (AM) are the most common symbiotic associations between plant’s root compartment and fungi. They can provide both nutritional benefit (mostly inorganic phosphate) leading to improved growth and non-nutritional benefits including defense responses to environmental cues throughout the host plant, which in return delivers carbohydrates to the symbiont. However how transcriptional changes occurring in AM leaves differ from those induced by phosphate fertilization is poorly understood. more...

Organism:

Medicago truncatula

Type:

Expression profiling by array

Platform:

GPL21767

16 Samples

Download data: TXT