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Ustilago esculenta

ABSTRACT: RNA-seq analysis of genes derived from smut fungus, Ustilago esculenta, involved in coexistence of U. esculenta and Zizania latifolia.

PROVIDER: PRJDB13303 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR357470_1.fastq.gz	Fastqsanger.gz
	DRR357470_2.fastq.gz	Fastqsanger.gz
	DRR357471_1.fastq.gz	Fastqsanger.gz
	DRR357471_2.fastq.gz	Fastqsanger.gz
	DRR357472_1.fastq.gz	Fastqsanger.gz

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Transcriptome analysis of a Ustilago maydis ust1 deletion mutant

Project description:Ustilago maydis, the causal agent of corn smut disease, is a dimorphic fungus alternating between a saprobic haploid budding form, and an obligate pathogenic filamentous dikaryon. Maize responds to U. maydis colonization by producing highly modified tumorous structures and it is only within these plant galls that the fungus sporulates giving rise to melanized sexual spores, the teliospores. Previously we identified a regulatory protein from the APSES family of transcription factors, which we named Ust1, whose absence in yeast cells led to filamentous growth and the production of highly pigmented spore-like structures in culture. In this study, we analyzed the transcriptome of a ∆ust1 deletion mutant.

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Project description:Ustilago maydis is a basidiomycete fungus that causes smut disease in maize. Most prominent symptoms of the disease are plant tumors, which can be induced by U. maydis on all aerial parts of the plant. We identified two linked genes, pit1 and pit2, which are specifically expressed during plant colonization. Deletion mutants for either pit1 or pit2 are unable to induce tumor development and elicit plant defense responses. We used the Affymetrix maize genome array to analyze the transcriptional responses of maize to deletion pit1 and pit2 mutants and found plant responses to both mutants being not significantly distinguishable.

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Role of Ustilago Nit2 in nitrogen utilization

Project description:The basidiomycete Ustilago maydis is the causal agent of corn smut disease and induces tumor formation during biotrophic growth in its host plant maize. The Usilago maydis genome harbors a homolog to the GATA transcription factors Nit2 and AreA that act as global regulators of nitrogen catabolite repression in filamentous model fungi Neurospora crassa and Aspergillus nidulans, respectively. We aimed at resolving the role of the Ustilago maydis Nit2 homolog for the utilization of complex nitrogen sources and pathogenicity.

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Project description:Long noncoding RNA sequencing of interaction between Zizania latifolia and Ustilago esculenta

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Ustilago maydis fox1 mediated gene expression during pathogenic development

Project description:Ustilago maydis is a plant-pathogenic fungus that establishes a biotrophic relationship with its host Zea mays. The biotrophic interaction is initiated upon host penetration, and involves expansion of the host plasma membrane around hyphae, which is thought to facilitate the exchange of nutrients and virulence factors. Transcriptional regulators involved in the establishment of an infectious dikaryon and penetration into the host have been identified, however, regulators involved in the post-penetration stages remained to be elucidated. In the study we report the identification of an Ustilago maydis forkhead transcription factor, Fox1, which is exclusively expressed during biotrophic development. Deletion of fox1 results in reduced virulence and impaired tumour development in planta. Microarray analyses of Δfox1-infected plant tissue identified Fox1 as a transcriptional activator, involved in the expression of secreted effectors required for virulence.

2010-12-31 | GSE19591 | GEO

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