Magnaporthe oryzae genomes
Ontology highlight
ABSTRACT:
REPOSITORIES: ENA
Similar Datasets
Project description:The Ca2+/calcineurin signaling pathway is a central conduit regulating growth, development, and virulence of fungal pathogens infecting plants and human. We have analyzed global gene expression profiles during Ca2+ treatment in the rice blast fungus, Magnaporthe oryzae. An immunosuppressive drug, FK506, and the knock-out mutant of a transcription factor, MoCRZ1, were included to analyze calcineurin- and/or CRZ1-dependent gene expression, respectively. About 1,400 genes were up or down regulated by Ca2+ treatment, while about 200 genes seemed to be up-regulated in a calcineurin/CRZ1-dependent manner.
2010-09-17 | GSE18185 | GEO
Project description:In order to understand the mechanisms of Drought induced susceptibility (DIS) we’ve conducted a dual RNAseq experiment on rice infected tissues by Magnaporthe oryzae. At 4 days post inoculation tissues have been collected on mock inoculated and M. oryzae inoculated plants. Rice were conducted under two type of water regime: DIS Drought during three days before inoculation, NoDIS no drought before inoculation. RNAseq was conducted both on rice and fungal RNA.
2016-10-01 | GSE84800 | GEO
Project description:Rice blast caused by Magnaporthe oryzae is the most devastating disease of cultivated rice. Several protein kinase cascades have been known to be essential to pathogenesis or important for response to stress, mycelial growth and conidiation in M. oryzae. However, phosphoproteins and their phosphorylation sites (p-sites) in this important fungal pathogen remain largely to be identified. In this study, 8087 phosphopeptides corresponding to 9825 p-sites from 1147 phosphoproteins were identified in mycelia of M. oryzae under a false discovery rate of < 0.55% at the peptide level. Notably, 33 previously reported pathogenesis-related proteins were included in the phosphoproteins at the mascot delta score 10. Further analyses of 581 motif-containing phosphoproteins that met more stringent criteria revealed that the phosphoproteins shared 19 distinct phosphorylation motifs, including the motif RxxpSP that was newly identified in this study but is widely distributed in diverse organisms. These phosphoproteins were mapped into 81 biological pathways. A total of 82 acidic motif-containing phosphoproteins were identified. Surprisingly, none of them except one were mapped to any of the metabolic pathways. Furthermore, a prediction disclosed a total of 174 kinase-substrate specific interactions in mycelia of M. oryzae. This study also detected phosphorylation of the tyrosine phosphatase Pmp1 and 7 other proteins upstream of Pmk1, but not Pmk1 and its downstream transcription factors. These results prompted a necessary revision of Pmk1 MAPK cascade, in which dephosphorylation of Pmk1 by Pmp1 in mycelia may block the activation of downstream targets.
2017-07-17 | PXD002364 | Pride
Project description:Magnaporthe oryzae is notorious for its efficient evolution as a plant pathogen. Analysis of well organised fungal pathogenic mechanisms would enable the scientific understanding to fight against pathogens. Histidine phosphotransferase in fungal systems are good targets for antifungals since they are component of SAPK pathway, which is essential for survival of the fungus. The histidine Phosphotransferase YPD1 in M. oryzae is known to be light responsive and important for both asexual reproduction as well as pathogenicity. In this study, the knock-down (KD) mutant of YPD1 was highly sensitive to cell wall perturbing agents and were highly deficient in laccase expression and activity. A RNA-seq transcriptome screening of KD mutant compared to wild type revealed altered expression of about 146 genes important in biotrophic and necrotrophic phases of the pathogen. About 96 genes were found to be down regulated, of which several plant cell wall degrading genes vital for pathogenicity and fungal cell wall maintenance genes important for growth and fungal development were identified. Most of the genes identified are involved in biotrophic invasion and metabolism. Our results explain the reason for the deficiency of the KD mutant in asexual reproduction as well as pathogenicity. Analysis of differentially expressed genes in the KD YPD1 mutant suggests that YPD1 can be a good target for development of novel antifungal compounds, as YPD1 expression affects genes required for pathogenicity.
2022-02-09 | GSE192934 | GEO
Project description:Magnaporthe oryzae causes rice blast, the most devastating foliar fungal disease of cultivated rice. During disease development the fungus simultaneously maintains both biotrophic and necrotrophic growth corresponding to a hemi-biotrophic life style. The ability of M. oryzae to also colonize roots and subsequently develop blast symptoms on aerial tissue has been recognized. The fungal root infection strategy and the respective host responses are currently unknown. Global temporal expression analysis suggested a purely biotrophic infection process reflected by the rapid induction of defense response-associated genes at the early stage of root invasion and subsequent repression coinciding with the onset of intracellular fungal growth. The same group of down-regulated defense genes was increasingly induced upon leaf infection by M. oryzae where symptom development occurs shortly post tissue penetration. Our molecular analysis therefore demonstrates the existence of fundamentally different tissue-specific fungal infection strategies and provides the basis for enhancing our understanding of the pathogen life style. Experiment Overall Design: We investigated global transcriptome response overtime of Mock- and M. oryzae inoculated rice root tissue in vitro. Two independant replicates were perfomed for each treatments and samples were collected at 2, 4 and 6 days post-inoculation.
2009-10-09 | E-GEOD-18361 | biostudies-arrayexpress
Project description:Magnaporthe oryzae causes rice blast, the most devastating foliar fungal disease of cultivated rice. During disease development the fungus simultaneously maintains both biotrophic and necrotrophic growth corresponding to a hemi-biotrophic life style. The ability of M. oryzae to also colonize roots and subsequently develop blast symptoms on aerial tissue has been recognized. The fungal root infection strategy and the respective host responses are currently unknown. Global temporal expression analysis suggested a purely biotrophic infection process reflected by the rapid induction of defense response-associated genes at the early stage of root invasion and subsequent repression coinciding with the onset of intracellular fungal growth. The same group of down-regulated defense genes was increasingly induced upon leaf infection by M. oryzae where symptom development occurs shortly post tissue penetration. Our molecular analysis therefore demonstrates the existence of fundamentally different tissue-specific fungal infection strategies and provides the basis for enhancing our understanding of the pathogen life style.
2009-10-02 | GSE18361 | GEO
Project description:Genetic studies have shown essential functions of N-glycosylation during infection of the plant pathogenic fungi, however, systematic roles of N-glycosylation in fungi is still largely unknown. Biological analysis demonstrated N-glycosylated proteins were widely present at different development stages of Magnaporthe oryzae and especially strong in the appressorium and invasive hypha.A large-scale quantitative proteomics analysis was then performed to explore the roles of N-glycosylation in M. oryzae.
2020-02-07 | PXD015522 | Pride
Project description:To investigate the role of iron excess in rice immune responses to Magnaporthe oryzae infection. Gene expression profiling analysis were performed using data obtained from RNA-seq of rice plants grown in differential iron supply and challenged with Magnaporthe oryzae spores.
2023-01-04 | GSE202997 | GEO
Project description:Plants and animals have evolved a first line of defense response to pathogens called innate or basal immunity. While basal defenses in these organisms are well studied, there is almost a complete lack of understanding of such systems in fungal species, and more specifically, how they are able to detect and mount a defense response upon pathogen attack. Hence, the goal of the present study was to understand how fungi respond to biotic stress by assessing the transcriptional profile of the rice blast pathogen, Magnaporthe oryzae, when challenged with the bacterial antagonist Lysobacter enzymogenes. Based on microscopic observations of interactions between M. oryzae and wild-type L. enzymogenes strain C3, we selected early and intermediate stages represented by time-points of 3 and 9 hours post-inoculation, respectively, to evaluate the fungal transcriptome using RNA-seq. For comparative purposes, we also challenged the fungus with L. enzymogenes mutant strain DCA, previously demonstrated to be devoid of antifungal activity. A comparison of transcriptional data from fungal interactions with the wild-type bacterial strain C3 and the mutant strain DCA revealed 463 fungal genes that were down-regulated during attack by C3; of these genes, 100 were also found to be up-regulated during the interaction with DCA. Functional categorization of genes in this suite included those with roles in carbohydrate metabolism, cellular transport and stress response. One gene in this suite belongs to the CFEM-domain class of fungal proteins. Another CFEM class protein called PTH11 has been previously characterized, and we found that a deletion in this gene caused advanced lesion development by C3 compared to its growth on the wild-type fungus. We discuss the characterization of this suite of 100 genes with respect to their role in the fungal defense response.
2013-10-01 | GSE43648 | GEO
Project description:A putative EAF3/MRG15 ortholog N1617, containing chromo and MRG domain, is a partner of Ash1 in Magnaporthe oryzae
2023-11-29 | GSE246678 | GEO