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Deciphering defense mechanisms primed by a rhamnolipid in wheat towards Zymoseptoria tritici

ABSTRACT: Deciphering defense mechanisms primed by a rhamnolipid in wheat towards Zymoseptoria tritici

PROVIDER: PRJNA740037 | ENA |

REPOSITORIES: ENA

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Deciphering defense mechanisms primed by a rhamnolipid in wheat towards Zymoseptoria tritici

Project description:We revealed that a rhamnolipid protects wheat against the hemibiotrophic fungal pathogen Zymoseptoria tritici. Foliar application of the biomolecule primes, during the early stages of infection, the expression of genes associated with different functional groups of genes.

2022-06-22 | GSE178704 | GEO

Deciphering immune responses primed by a bacterial lipopeptide in wheat towards Zymoseptoria tritici

Project description:We revealed that mycosubtilin, a lipopeptide from Bacillus subtilis, protects wheat against the hemibiotrophic fungal pathogen Zymoseptoria tritici. Foliar application of the biomolecule primes, during the early stages of infection, the expression of genes associated with sixteen functional groups, including responses to pathogens, abiotic and oxidative stresses, secondary metabolism, cell-wall structure and function, and primary metabolic pathways (carbohydrate, amino acid, protein, lipid, and energy metabolisms).

2022-11-04 | GSE169298 | GEO

Deciphering immune responses primed by a bacterial lipopeptide in wheat towards Zymoseptoria tritici

Project description:Deciphering immune responses primed by a bacterial lipopeptide in wheat towards Zymoseptoria tritici

| PRJNA716202 | ENA

On-target antifungal activity and induction of an unusual metabolic defense mechanism by inhibitors of wheat pathogen Zymoseptoria tritici N-myristoyltransferase

Project description:Novel myristoylated proteins in a fungal pathogen of wheat Zymoseptoria tritici were identified.

2020-06-22 | PXD012857 | Pride

Transcriptome sequencing at early stage infection of the wheat pathogen Zymoseptoria tritici reveals chromosomal differences in transcription patterns and host specific gene expression.

Project description:We have applied whole transcriptome profiling to infer genetic determinants of pathogenicity and host specialization in Z. tritici. Our data includes RNAseq data from early infection stages of a compatible (wheat) and a non-compatible host (Brachypodium distachyon). Overall transcription of AC genes is remarkably lower than genes on core chromosomes (CC) and only 40% of the genes are transcribed. We identify 31 AC and 1069 CC genes showing plant specific expression. In addition 21 CC genes are only upregulated in wheat supporting functional relevance in host specificity. We further explore the genomic composition and distribution of unique and paralogous genes in Z. tritici focusing on the evolutionary origin of AC genes. In contrast to previous studies we show that ACs mainly encode unique genes. Phylogenetic analyses suggest that rare duplication events in the Z. tritici genome precede diversification of Zymoseptoria species and demonstrate that ACs have been maintained in the genome of Zymoseptoria over long evolutionary times. Examination of gene expression at 3 different growth condition of the wheat pathogen Z. tritici.

2014-06-30 | E-GEOD-54874 | biostudies-arrayexpress

Transcriptome and Metabolite Profiling of the Infection Cycle of Zymoseptoria tritici on Wheat Reveals a Biphasic Interaction with Plant Immunity Involving Differential Pathogen Chromosomal Contributions and a Variation on the Hemibiotrophic Lifestyle Definition.

Project description:The hemibiotrophic fungus Zymoseptoria tritici causes Septoria tritici blotch disease of wheat (Triticum aestivum). Pathogen reproduction on wheat occurs without cell penetration, suggesting that dynamic and intimate intercellular communication occurs between fungus and plant throughout the disease cycle. We used deep RNA sequencing and metabolomics to investigate the physiology of plant and pathogen throughout an asexual reproductive cycle of Z. tritici on wheat leaves. Over 3,000 pathogen genes, more than 7,000 wheat genes, and more than 300 metabolites were differentially regulated. Intriguingly, individual fungal chromosomes contributed unequally to the overall gene expression changes. Early transcriptional down-regulation of putative host defense genes was detected in inoculated leaves. There was little evidence for fungal nutrient acquisition from the plant throughout symptomless colonization by Z. tritici, which may instead be utilizing lipid and fatty acid stores for growth. However, the fungus then subsequently manipulated specific plant carbohydrates, including fructan metabolites, during the switch to necrotrophic growth and reproduction. This switch coincided with increased expression of jasmonic acid biosynthesis genes and large-scale activation of other plant defense responses. Fungal genes encoding putative secondary metabolite clusters and secreted effector proteins were identified with distinct infection phase-specific expression patterns, although functional analysis suggested that many have overlapping/redundant functions in virulence. The pathogenic lifestyle of Z. tritici on wheat revealed through this study, involving initial defense suppression by a slow-growing extracellular and nutritionally limited pathogen followed by defense (hyper) activation during reproduction, reveals a subtle modification of the conceptual definition of hemibiotrophic plant infection.

2015-03-12 | E-MTAB-4116 | biostudies-arrayexpress

Transcriptome sequencing at early stage infection of the wheat pathogen Zymoseptoria tritici reveals chromosomal differences in transcription patterns and host specific gene expression.

2014-06-30 | GSE54874 | GEO

Deciphering immune responses primed by a bacterial lipopeptide in wheat towards <i>Zymoseptoria tritici</i>.

Project description:Plant immunity induction with natural biocontrol compounds is a valuable and promising ecofriendly tool that fits with sustainable agriculture and healthy food. Despite the agroeconomic significance of wheat, the mechanisms underlying its induced defense responses remain obscure. We reveal here, using combined transcriptomic, metabolomic and cytologic approach, that the lipopeptide mycosubtilin from the beneficial bacterium Bacillus subtilis, protects wheat against Zymoseptoria tritici through a dual mode of action (direct and indirect) and that the indirect one relies mainly on the priming rather than on the elicitation of plant defense-related mechanisms. Indeed, the molecule primes the expression of 80 genes associated with sixteen functional groups during the early stages of infection, as well as the accumulation of several flavonoids during the period preceding the fungal switch to the necrotrophic phase. Moreover, genes involved in abscisic acid (ABA) biosynthesis and ABA-associated signaling pathways are regulated, suggesting a role of this phytohormone in the indirect activity of mycosubtilin. The priming-based bioactivity of mycosubtilin against a biotic stress could result from an interaction of the molecule with leaf cell plasma membranes that may mimic an abiotic stress stimulus in wheat leaves. This study provides new insights into induced immunity in wheat and opens new perspectives for the use of mycosubtilin as a biocontrol compound against Z. tritici.

| S-EPMC9909289 | biostudies-literature

Improved genome annotation of the fungal wheat pathogen Zymoseptoria tritici IPO323 using Iso-Seq and RNA-Seq data

Project description:To reannotate the genome of Zymoseptoria tritici IPO323, RNA-Seq and Iso-Seq runs were performed on different growth media to provide new source of evidence for gene model predictors. New gene models were predicted and combined with existing annotation releases. Finally, selection of best gene models was done by congruence with evidence data like transcript assembled from RNA-Seq, Iso-Seq cDNA and fungal proteins from databases.

2023-07-04 | GSE218898 | GEO

Zymoseptoria tritici IPO323

Project description:Zymoseptoria tritici IPO323

| PRJNA296417 | ENA