Differential Expression Analysis of a Histidine phosphotransferase RNAi mutant in Magnaporthe oryzae
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ABSTRACT:
PROVIDER: PRJNA793841 | ENA |
REPOSITORIES: ENA
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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: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:RNAi is a conserved mechanism in eukaryotic organisms and has been the subject of recent attention pertaining to many animal and plant models. But research related to fungal systems is limited, especially in plant pathogenic models. The present study was undertaken to examine the involvement of RNAi components on the biogenesis of small RNAs and their impact on growth and pathogenicity of the plant pathogenic model organism Magnaporthe oryzae. Through genetic and genomic analyses, we demonstrate that an individual Dicer, an RdRP and an Argonaute are essential for the generation of sRNAs. Collectively, they are involved in biogenesis of sRNAs matching to coding regions, repeats and intergenic regions. The loss of a particular Argonaute made the fungus less virulent on barley leaves and was also essential for sRNA production. Furthermore, one specific RdRP that was not essential to sRNA generation nonetheless reduced fungal virulence. In total, ten deletion mutants were constructed in each of the putative sRNA-generating genes, as well as a double deletion mutant in the two Dicers, and comparison of sRNA and RNA-seq profiles of each mutant yielded new insights into the involvement of sRNAs in transcriptional regulation and intergenic regions in M. oryzae. Together, these data support that RNAi machinery in M. oryzae is not only involved in generation of sRNAs, but is involved in regulating various developmental processes including fungal growth and virulence.
2017-05-22 | GSE81640 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE8517: Magnaporthe oryzae gene expression during biotrophic invasion of rice using version 2 of the Agilent Magnaporthe grisea Array (G4137B). GSE8518: Rice gene expression during biotrophic invasion by the rice blast fungus Magnaporthe oryzae using the Agilent Rice Array (G4138A). Keywords: SuperSeries Refer to individual Series
2009-04-08 | E-GEOD-8670 | biostudies-arrayexpress
Project description:Concomitant sRNA and mRNAseq was carried out to elucidate the reprogramming occurring during Magnaporthe oryzae - Brachypodium distachyon interaction in three different setups: biotrophic stage of leaf infection (Leaf 2 DPI), necrotrophic stage of leaf infection (Leaf 4 DPI) and finally root infection (Root).
2021-01-17 | E-MTAB-9984 | biostudies-arrayexpress
Project description:Concomitant sRNA and mRNAseq was carried out to elucidate the reprogramming occurring during Magnaporthe oryzae - Brachypodium distachyon interaction in three different setups: biotrophic stage of leaf infection (Leaf 2 DPI), necrotrophic stage of leaf infection (Leaf 4 DPI) and finally root infection (Root).
2021-01-17 | E-MTAB-9985 | biostudies-arrayexpress
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
Project description:A putative EAF3/MRG15 ortholog N1617, containing chromo and MRG domain, is a partner of Ash1 in Magnaporthe oryzae
2023-11-29 | GSE246677 | 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