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Elevated carbon dioxide alters the interaction between Eucalyptus grandis and Pisolithus microcarpus through a complex shift in the root transcriptome

ABSTRACT: Elevated carbon dioxide alters the interaction between Eucalyptus grandis and Pisolithus microcarpus through a complex shift in the root transcriptome

OTHER RELATED OMICS DATASETS IN: GSE62227

PROVIDER: PRJNA263510 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1609810_1.fastq.gz	Fastqsanger.gz
	SRR1609810_2.fastq.gz	Fastqsanger.gz
	SRR1609820_1.fastq.gz	Fastqsanger.gz
	SRR1609820_2.fastq.gz	Fastqsanger.gz
	SRR1609830_1.fastq.gz	Fastqsanger.gz

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Elevated carbon dioxide alters the interaction between Eucalyptus grandis and Pisolithus microcarpus through a complex shift in the root transcriptome

Project description:Illumina HiSeq technology was used to generate mRNA profiles from in vitro Eucalyptus grandis roots interacting with two different Pisolithus microcarpus strains (SI-9 and SI-12) and under two different CO2 concentrations (400 and 650 ppm) . Control roots or ectomycorrhizal root tips were harvested after 1 month and used for RNA extraction. Paired-end (2X150bp) reads were generated and aligned to Eucalyptus grandis transcripts (http://www.phytozome.net/; primarytranscripts only) using CLC Genomics Workbench 6.

2014-10-10 | GSE62227 | GEO

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Novel Microdialysis Technique Reveals a Dramatic Shift in Metabolite Secretion during the Early Stages of the Interaction between the Ectomycorrhizal Fungus Pisolithus microcarpus and Its Host Eucalyptus grandis.

Project description:The colonisation of tree roots by ectomycorrhizal (ECM) fungi is the result of numerous signalling exchanges between organisms, many of which occur before physical contact. However, information is lacking about these exchanges and the compounds that are secreted by each organism before contact. This is in part due to a lack of low disturbance sampling methods with sufficient temporal and spatial resolution to capture these exchanges. Using a novel in situ microdialysis approach, we sampled metabolites released from Eucalyptus grandis and Pisolithus microcarpus independently and during indirect contact over a 48-h time-course using UPLC-MS. A total of 560 and 1530 molecular features (MFs; ESI- and ESI+ respectively) were identified with significant differential abundance from control treatments. We observed that indirect contact between organisms altered the secretion of MFs to produce a distinct metabolomic profile compared to either organism independently. Many of these MFs were produced within the first hour of contact and included several phenylpropanoids, fatty acids and organic acids. These findings show that the secreted metabolome, particularly of the ECM fungus, can rapidly shift during the early stages of pre-symbiotic contact and highlight the importance of observing these early interactions in greater detail. We present microdialysis as a useful tool for examining plant-fungal signalling with high temporal resolution and with minimal experimental disturbance.

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Gene expression analyses of four Pisolithus microcarpu strains: Si9, MW3, R4 and R10. Gene expression in Eucalyptus grandis mycorrhizal root tip was compared to gene expression in free-living mycelium for each strain.

Project description:Illumina HiSeq technology was used to generate mRNA profiles from Pisolithus microcarpus Si9, MW3, R4 or R10 ectomycorrhizal root tips compared to their respective free-living mycelium.

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