Project description:This project aims at identifying secreted proteins that modulate plant immunity from Ustilaginoidea virens, which infects rice panicles and is the causal agent of rice false smut (RFS). The identified proteins will be expressed in plant and test whether they can induce cell death, induce plant immunity or suppress plant immunity.

2021-04-23 | PXD024541 | Pride

Genome-wide mapping of H3K4 tri-methylation in ΔUvkmt2 mutant strain of Ustilaginoidea virens

Project description:Epigenetic modification is important for cellular functions. Trimethylation of histone H3 lysine 4 (H3K4me3), which associates with transcriptional activation, is one of the important epigenetic modifications. In this study, the biological functions of UvKmt2-mediated H3K4me3 modification were characterized in Ustilaginoidea virens, which is the causal agent of the false smut disease, one of the most destructive diseases in rice. Phenotypic analyses of the ΔUvkmt2 mutant revealed that UvKMT2 is necessary for growth, conidiation, secondary spore formation, and virulence in U. virens. Immunoblotting and chromatin immunoprecipitation assay followed by sequencing (ChIP-seq) showed that UvKMT2 is required for the establishment of H3K4me3, which covers 1729 genes of the genome in U. virens. In particular, H3K4me3 modification involves in the transcriptional regulation of conidiation-related and pathogenic genes. The down-regulation of UvHOG1 and UvPMK1 genes may be one of the main reasons for the reduced pathogenicity and stresses adaptability of the ∆Uvkmt2 mutant. Overall, H3K4me3, established by histone methyltransferase UvKMT2, contributes to fungal development, secondary spore formation, virulence, and various stresses response through transcriptional regulation in U. virens.

2022-05-25 | GSE203326 | GEO

Ustilaginoidea virens strain:P1

Project description:Ustilaginoidea virens strain:P1 Genome sequencing

| PRJNA610522 | ENA

Proteomic analysis of mycelial exudate of Ustilaginoidea virens

Project description:Rice false smut (RFS) is a kind of fungal disease transforming panicles and spikelets into greenish spore balls, caused by Ustilaginoidea virens. During artificial cultivation process, macroscopic exudates could be observed, which is a common feature in many kinds of fungi. We characterized the proteome of exudate associated with this plant pathogen. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis was used to identify proteins in the pathogen exudate. A total of 685 proteins comprising 3,949 peptides were identified from the exudate. This study regarded the biological characteristics of U. virens as an entry point. By studying the protein components of the exudates of U. virens, it is helpful to better understand the occurrence and pathogenic mechanism of pathogen and provide a theoretical basis for the control of RFS.

2021-04-08 | PXD019861 | Pride

Ustilaginoidea virens strain:P1

Project description:Ustilaginoidea virens strain:P1 Transcriptome or Gene expression

| PRJNA242493 | ENA

Ustilaginoidea virens

Project description:Differential expression profiling of Ustilaginoidea virens in resistant and susceptible rice varieties during early infection

| PRJNA344467 | ENA