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Colletotrichum orbiculare

ABSTRACT: Transcriptome analysis of Colletotrichum orbiculare during host infection

PROVIDER: PRJDB15139 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR438340.fastq.gz	Fastqsanger.gz
	DRR438341.fastq.gz	Fastqsanger.gz
	DRR438342.fastq.gz	Fastqsanger.gz
	DRR438343.fastq.gz	Fastqsanger.gz
	DRR438344.fastq.gz	Fastqsanger.gz

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Analysis of Colletotrichum orbiculare infection of N. benthamiana

Project description:Species from the genus Colletotrichum are the causal agents of anthracnose which contribute to significant losses to the production of commercially grown crops. The genomes of Colletotrichum orbiculare, which infects cucurbits and Nicotiana benthamiana, as well as Colletotrichum gloeosporioides, which infects a wide range of fruits and vegetables, were sequenced. A custom microarray was designed for Colletotrichum orbiculare and used to assess gene expression during infection of Nicotiana benthamiana. Gene expression of Colletotrichum orbiculare growing on its host Nicotiana benthamiana was assessed at 24 hours post inoculation, 3 days post inoculation and 7 days post inoculation. Mycelia growing in vitro and ungerminated conidia were used as controls. Three replicates were performed for each time point.

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Project description:Transcriptome analyses of Colletotrichum orbiculare during appressorium formation in vitro and in planta

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Analysis of Colletotrichum orbiculare whi2Δ mutant infection of Cucumis sativus at 4hpi

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Analysis of Colletotrichum orbiculare whi2Î mutant infection of Cucumis sativus at 4hpi

Project description:Colletotrichum orbiculare Whi2, yeast stress response Whi2 homolog, is involved in switch from biotrophic to necrotrophic stage. To elucidate downstream genes regulated by Co Whi2, we have conducted DNA microarray. About 3100 genes were up or down regulated in the Co whi2Î mutant compared with the wild-type. In particularly, 44 genes among up-regulated 58 genes in the Co whi2Î mutant are ribosomal protein related gene. Eukaryote is widely conserved TOR (Target Of Rapamycin) which is known to regulator of ribosomal gene expression. To elucidate whether up-regulated ribosomal genes in the Co whi2Î mutant are regulated by TOR activity, we have conducted DNA microarray in the Co whi2Î mutant treated with rapamycin inhibiting TOR activity. The enormous ribosomal gene expression in the Co whi2Î mutant treated with the rapamycin is lower than that without rapamycin treatment. In gene expression of the Co whi2Î mutant, the wild-type and the Co whi2Î mutant infecting on cucumber cotyledons were assessed at 4 hours post-inoculation. In gene expression of the Co whi2Î mutant with rapamycin treatment, Co whi2Î mutant treated with 100nM rapamycin and Co whi2Î mutant without rapamycin treatment infecting on cucumber cotyledons were assesed at 4 hours post-inoculation. Four replication were performed for each experiments.

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Project description:The hemibiotrophic fungal pathogen Colletotrichum graminicola is the causal agent of anthracnose disease on maize stalks and leaves. After the formation of appressoria the host cell wall is penetrated by the conversion of appressorial turgor pressure into forceful ejection of a penetration peg. Subsequently, C. graminicola establishes biotrophic hyphae in the penetrated epidermis cell at around 36 hours post inoculation (hpi) until a switch of hyphal morphology and lifestyle takes place during the colonization of neighboring host cells at around 72 hpi. During the ensuing necrotrophic growth, dark necrotic lesions are formed that are visible as anthracnose symptoms. We used microarrays to detail the global programme of gene expression during the infection process of Colletotrichum graminicola in its host plant to get insight into the defense response of this compatible interaction and into the metabolic reprogramming needed to supply the fungus with nutrients. In three independent experiments, maize plants were infected with conidia of the Colletotrichum graminicola strain CgM2 by spray inoculation of leaves. Samples from infected leaves were taken at 36 and 96 hours post infection, corresponding to initial biotrophic and necrotrophic phase, respectively. Samples from uninfected control plants were taken at the same time points.

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