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Helianthemum almeriense mycorrhizal symbiosis

ABSTRACT: Illumina HiSeq technology was used to generate mRNA profiles from Helianthemum almeriense in three different conditions: non-mycorrhizal plant, well-watered mycorrhizal plant and drought-stressed mycorrhizal plant. Paired-end reads of 75 bp were generated and aligned to a de novo transcriptome assembly from H. almeriense, which was performed using Megahit version 1.1.3 and transcripts from each condition were mapped onto the de novo transcriptome with Bowtie2 version 2.3.0.

ORGANISM(S): Helianthemum almeriense Terfezia claveryi

PROVIDER: GSE155042 | GEO | 2020/10/21

REPOSITORIES: GEO

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Terfezia claveryi mycorrhizal symbiosis

Project description:Illumina HiSeq technology was used to generate mRNA profiles from Terfezia claveryi in three different conditions: free living mycellium, well-watered mycorrhizal plant and drought-stressed mycorrhizal plant. Paired-end reads of 75 bp were generated and aligned to Terfezia claveryi reference transcripts using CLC Genomics Workbench 11.

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The membrane proteome of Medicago truncatula roots displays qualitative and quantitative changes in response to arbuscular mycorrhizal symbiosis

Project description:Arbuscular mycorrhizal (AM) symbiosis that associates roots of most land plants with soilborne fungi (Glomeromycota), is characterized by reciprocal nutritional benefits. Fungal colonization of plant roots induces massive changes in cortical cells where the fungus differentiates an arbuscule, which drives proliferation of the plasma membrane, and the de novo synthesis of the periarbuscular membrane. Despite the recognized importance of membrane proteins in sustaining AM symbiosis, the root microsomal proteome elicited upon mycorrhiza still remains to be explored. In this study, we first examined the qualitative composition of the root membrane proteome of Medicago truncatula after microsome enrichment and subsequent in depth analysis by GeLC-MS/MS. The results obtained highlighted the identification of 1226 root membrane protein candidates whose cellular and functional classifications predispose plastids and protein synthesis as prevalent organelle and function, respectively. Changes at the protein abundance level between the membrane proteomes of mycorrhizal and nonmycorrhizal roots were further monitored by spectral counting, which retrieved a total of 97 proteins that displayed a differential accumulation upon AM symbiosis. Besides the canonical markers of the periarbuscular membrane, new candidates supporting the importance of membrane trafficking events during mycorrhiza establishment/functioning were identified, including flotillin-like proteins.

2014-06-30 | PXD000875 | Pride

Large-scale transcriptomics provides insights on the mycorrhizal symbiosis of the Mediterranean orchid Limodorum abortivum in nature

Project description:The study of orchid mycorrhizal interactions is particularly complex because of the peculiar life cycle of these plants and their diverse trophic strategies. Here, large-scale transcriptomics has been applied to investigate gene expression in the mycorrhizal roots of the terrestrial mixotrophic orchid Limodorum abortivum under natural conditions. Our results provide new insights into the mechanisms underlying plant-fungus interactions in orchids and in particular on the plant responses to the mycorrhizal symbiont(s) in adult roots. Comparison with gene expression in mycorrhizal roots of another orchid species, Oeceoclades maculata, suggests that amino acids may represent the main nitrogen source in both protocorms and adult orchids, at least for mixotrophic species. The upregulation, in mycorrhizal L. abortivum roots, of some symbiotic molecular marker genes identified in mycorrhizal roots from other orchids as well as in arbuscular mycorrhiza, suggests a common plant core of genes in endomycorrhizal symbioses. Further efforts will be required to understand whether the specificities of orchid mycorrhiza depend on fine-tuned regulation of these common components, or whether specific additional genes are involved.

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2011-05-03 | GSE22950 | GEO

affy_ams_maize-Cell wall maize mutant during arbuscular mycorrhizal symbiosis

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2011-05-03 | E-GEOD-22950 | biostudies-arrayexpress

Proteomic and transcriptomic analyses indicate metabolic changes and reduced defense responses in mycorrhizal roots of Oeceoclades maculata (Orchidaceae) collected in nature

Project description:Orchids form an endomycorrhizal association with fungal symbionts mainly belonging to Basidiomycetes. The molecular events taking place in orchid mycorrhiza are poorly understood, although the cellular changes necessary to accommodate the fungus and to control nutrient exchange between the symbionts imply a modulation of gene expression. In this study, we used proteomic and transcriptomic approaches to identify changes in the steady-state levels of proteins and transcripts in roots of the green terrestrial orchid Oeceoclades maculata. When mycorrhizal and non-mycorrhizal roots from the same individuals of O. maculata were compared, 94 proteins showed differential accumulation using the label-free protein quantitation approach, 86 using isobaric tagging (iTRAQ) and 60 using 2D-differential electrophoresis. After de novo assembly of transcriptomic data, 11,179 plant transcripts were found to be differentially expressed and 2175 were successfully annotated. The annotated plant transcripts allowed the identification of up- and down-regulated metabolic pathways in mycorrhizal roots, as compared to non-mycorrhizal roots. Overall, proteomics and transcriptomics revealed in mycorrhizal roots increased levels of transcription factors and nutrient transporters, as well as ethylene-related proteins. The expression pattern of proteins and transcripts involved in plant defense responses suggest that plant defense is reduced in mycorrhizal roots. These results expand our current knowledge towards a better understanding of the orchid mycorrhizal symbiosis in adult plants under natural conditions.

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Helianthemum almeriense mycorrhizal symbiosis

Project description:Helianthemum almeriense mycorrhizal symbiosis

| PRJNA648328 | ENA

Terfezia claveryi mycorrhizal symbiosis

Project description:Terfezia claveryi mycorrhizal symbiosis

| PRJNA646475 | ENA

Transcriptome analysis of mycorrhizal and non-mycorrhizal soybean root associated with F. virguliforme inoculation

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