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Saccharomyces cerevisiae transcriptome response to overexpression of the Phytophthora sojae Avh110 effector

ABSTRACT: Saccharomyces cerevisiae transcriptome response to overexpression of the Phytophthora sojae Avh110 effector

PROVIDER: PRJEB40324 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR4583503.fastq.gz	Fastqsanger.gz
	ERR4583504.fastq.gz	Fastqsanger.gz
	ERR4583505.fastq.gz	Fastqsanger.gz
	ERR4583506.fastq.gz	Fastqsanger.gz
	ERR4583507.fastq.gz	Fastqsanger.gz

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Saccharomyces cerevisiae transcriptome response to overexpression of the Phytophthora sojae Avh172 effector

Project description:The oomycete pathogen Phytophthora sojae causes root rot of soybean. During infection, the pathogen is thought to deliver dozens, if not hundreds, of effector proteins into the host to manipulate intracellular systems. Although these pathogen proteins often exhibit similar N-terminal delivery domains, the remaining effector region is rarely homologous to known protein domains, making it difficult to predict its biochemical function during infection. As a complement to studies in the natural host, Saccharomyces cerevisiae has been successfully used as a model system to explore the biochemical function of individual pathogen effectors. The presumption is that many effectors target conserved eukaryotic pathways in the host and consequently the expression of effectors in yeast will confer corresponding phenotypes. Indeed, putative effector functions identified using yeast functional genomic approaches have subsequently been validated in the natural host. Over-expression of the Phytophthora sojae effector Avh172 (PsAvh172) inhibits the growth of Saccharomyces cerevisiae, suggesting that the effector targets a biological pathway conserved with plants. In this study, the transcriptomes of yeast expressing PsAvh172 or an empty vector were compared to examine the global transcriptional response, in hopes of discerning the effectors biochemical target.

2021-01-01 | E-MTAB-4682 | biostudies-arrayexpress

Saccharomyces cerevisiae transcriptome response to overexpression of the Phytophthora sojae Avh110 effector

Project description:The oomycete pathogen Phytophthora sojae causes root rot of soybean. During infection, the pathogen is thought to deliver dozens, if not hundreds, of effector proteins into the host to manipulate intracellular systems. Although these pathogen proteins often exhibit similar N-terminal delivery domains, the remaining effector region is rarely homologous to known protein domains, making it difficult to predict its biochemical function during infection. As a complement to studies in the natural host, Saccharomyces cerevisiae has been successfully used as a model system to explore the biochemical function of individual pathogen effectors. The presumption is that many effectors target conserved eukaryotic pathways in the host and consequently the expression of effectors in yeast will confer corresponding phenotypes. Indeed, putative effector functions identified using yeast functional genomic approaches have subsequently been validated in the natural host. Over-expression of the Phytophthora sojae effector Avh110 (PsAvh110) inhibits the growth of Saccharomyces cerevisiae, suggesting that the effector targets a biological pathway conserved with plants. In this study, the transcriptome of yeast expressing PsAvh110 or an empty vector were compared to examine the global transcriptional response, in hopes of discerning the effector's biochemical target.

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Saccharomyces cerevisiae transcriptome response to overexpression of the Phytophthora sojae Avh172 effector

Project description:Saccharomyces cerevisiae transcriptome response to overexpression of the Phytophthora sojae Avh172 effector

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Digital gene expression profiling of the Phytophthora sojae transcriptome

Project description:This experiment contains Phytophthora sojae samples and RNA-seq data from experiment E-GEOD-29561 (https://www.ebi.ac.uk/arrayexpress/experiments/E-GEOD-29651/) to understand gene expression during the P. sojae life cycle. The transcriptome of the oomycete plant pathogen Phytophthora sojae was profiled at 5 different developmental stages: mycelia (MY), zoosporangia (SP), zoospores (ZO), cysts (CY) and germinating cysts (GC); based on a 3'-tag digital gene expression (DGE) protocol. More than 90 million clean sequence tags were generated and compared to the P. sojae genome and its 19,027 predicted genes. A total of 14,969 genes were detected, of which 10,044 were deemed reliable because they mapped to unambiguous tags. A web-based server named the Phytophthora Transcriptional Database (PTD) has been established.

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Project description:Plant pathogens secreted effector proteins to overcome host immunity system and gain access to colonization. Although more than 300 hundred of RxLR effectors were encoded by the devastating soybean pathogen Phytophthora sojae, the patterns of conditionally expressed effector genes were well programmed. However, the effector gene regulation mechanisms were not fully dissected. In this study, we identified the H3K36me3 methyltransferase PsKMT3. Phenotypic assays showed PsKMT3 was involved in regulation of growth, sporulation, zoospore production and pathogenicity. ChIP-seq analysis, together with RNA-seq analysis, showed PsKMT3 controlled a set of RxLR gene expression. The transcriptome comparison showed large-scale mis-expression of RxLR waves during mycelium, 3 hpi and 6 hpi stages between WT and pskmt3. Our result supports a new RxLR gene regulation mechanisms in which methyltransferase PsKMT3 maintains well programmed RxLR gene expression in P. sojae.

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