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Plant host habitat and root exudates shape fungal diversity

ABSTRACT: Plant host habitat and root exudates shape fungal diversity

PROVIDER: PRJEB25017 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR2304980_1.fastq.gz	Fastqsanger.gz
	ERR2304980_2.fastq.gz	Fastqsanger.gz
	ERR2304990_1.fastq.gz	Fastqsanger.gz
	ERR2304990_2.fastq.gz	Fastqsanger.gz
	ERR2305000_1.fastq.gz	Fastqsanger.gz

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Plant host habitat and root exudates shape fungal diversity

Project description:Plant host habitat and root exudates shape fungal diversity

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Transcription profiling of Physcomitrella patens response to fungal exudates

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Project description:In our previous work, we found that the root exudates of sgn3 myb36 promoted the colonization of CHA0 on roots. Through LC-MS, we identified a large amount of glutamine (Gln) in the root exudates of sgn3 myb36. Therefore, we aim to use RNA-seq to uncover whether the root exudates of sgn3 myb36 and Gln have the same regulatory effects on CHA0. By conducting differential analysis with the CK (CHA0 treated with wild-type root exudates), we hope to identify the specific regulatory mechanisms of sgn3 myb36 and Gln on CHA0.

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Root biomass and exudates link plant diversity with soil bacterial and fungal biomass.

Project description:Plant diversity has been shown to determine the composition and functioning of soil biota. Although root-derived organic inputs are discussed as the main drivers of soil communities, experimental evidence is scarce. While there is some evidence that higher root biomass at high plant diversity increases substrate availability for soil biota, several studies have speculated that the quantity and diversity of root inputs into the soil, i.e. though root exudates, drive plant diversity effects on soil biota. Here we used a microcosm experiment to study the role of plant species richness on the biomass of soil bacteria and fungi as well as fungal-to-bacterial ratio via root biomass and root exudates. Plant diversity significantly increased shoot biomass, root biomass, the amount of root exudates, bacterial biomass, and fungal biomass. Fungal biomass increased most with increasing plant diversity resulting in a significant shift in the fungal-to-bacterial biomass ratio at high plant diversity. Fungal biomass increased significantly with plant diversity-induced increases in root biomass and the amount of root exudates. These results suggest that plant diversity enhances soil microbial biomass, particularly soil fungi, by increasing root-derived organic inputs.

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Transcriptomics of Bacillus amyloliquefaciens SQR9 to maize root exudates

2014-11-01 | GSE54987 | GEO

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: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)

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TIME-COURSE GENE EXPRESSION OF Metharizium anisopliae GROWING IN PLANT ROOT EXUDATE

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MicroRNAs in Pyrus stigma tissue and stigma exudates

Project description:In many plant species, flower stigma secretions are important in early stages of sexual reproduction. Previous chemical analysis and proteomic characterization of these exudates provided insights into their biological function. Nevertheless, the presence of nucleic acids in the stigma exudates has not been previously reported. Here we studied the stigma exudates of Pyrus communis, Pyrus pyrifolia and Pyrus syriaca, and showed them to harbor extracellular RNAs of various sizes. RNA sequencing revealed, for the first time, the presence of known Rosaceae mature micro-RNAs (miRs), also abundant in the stigma source tissue. Predicted targets of the exudate miRs in the Arabidopsis thaliana genome include genes involved in various biological processes. Several of these genes are pollen transcribed, suggesting possible involvement of exudate miRs in transcriptional regulation of the pollen. Moreover, extracellular miRs can potentially act across kingdoms and target genes of stigma interacting organisms/microorganisms, thus opening novel applicative avenues in HortSciences.

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