Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1090403 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:RNA-seq on Triticum aestivum leaves inoculated with spot blotch
| PRJNA1133090 | ENA
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
Project description:Hordeum vulgare ssp. spontaneum, accession Shechem 12-32, was submitted to 4 experimental treatments (C. sativus (spot blotch), P. hordei (leaf rust), and water and oil controls) to examine gene transcription differences triggered by biotrophic and hemi-biotrophic pathogens. Inoculated plants were arranged in a split plot design. Samples were collected at 12, 24, 36, & 48 hours after inoculation. A total of 48 samples (4 treatments x 4 time points x 3 replicates) were subjected to GeneChip analysis. Made public: 2009-12-02 ****[PLEXdb(http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Ben Millett. The equivalent experiment is BB61 at PLEXdb.] treated or untreated: C. sativus (spot blotch) - time: 12 hrs(3-replications); treated or untreated: C. sativus (spot blotch) - time: 24 hrs(3-replications); treated or untreated: C. sativus (spot blotch) - time: 36 hrs(3-replications); treated or untreated: C. sativus (spot blotch) - time: 48 hrs(3-replications); treated or untreated: water control - time: 12 hrs(3-replications); treated or untreated: water control - time: 24 hrs(3-replications); treated or untreated: water control - time: 36 hrs(3-replications); treated or untreated: water control - time: 48 hrs(3-replications); treated or untreated: P. hordei (leaf rust) - time: 12 hrs(3-replications); treated or untreated: P. hordei (leaf rust) - time: 24 hrs(3-replications); treated or untreated: P. hordei (leaf rust) - time: 36 hrs(3-replications); treated or untreated: P. hordei (leaf rust) - time: 48 hrs(3-replications); treated or untreated: oil control - time: 12 hrs(3-replications); treated or untreated: oil control - time: 24 hrs(3-replications); treated or untreated: oil control - time: 36 hrs(3-replications); treated or untreated: oil control - time: 48 hrs(3-replications)
2011-11-22 | E-GEOD-33401 | biostudies-arrayexpress
Project description:Transcriptome analysis for the identification of spot blotch responsive genes and miRNAs in wheat [Triticum aestivum (fastq files) for Spot Blotch disease (SBR1: Susceptible and SBR2: Resistant)
| PRJNA1181582 | ENA
Project description:spot blotch disease resistance mechanism in Triticum aestivum
| PRJNA422331 | ENA
Project description:The economic importance of wheat and its contribution to human and livestock diets has been already demonstrated. However, wheat production is impacted by pests that induce yield reductions. Among these pests, wheat curl mite (WCM, Aceria tosichella Keifer) impacts wheat all around the world. WCM are tiny pests that feed within the whorl of developing leaves and prevent the leaves from unfurling by causing leaves curling. The curling of the leaves provides a protective niche for the WCM. Additionally, WCM are also the vector of serious viruses in wheat. Little is known regarding the impact of the WCM on wheat transcriptome, and to date, only one article has been published describing the wheat transcriptomic changes after 1 day of WCM feeding. To better understand the wheat transcriptome variation after long-term feeding by WCM (10 days post infestation (dpi)), we used an RNA-seq approach. We collected leaves uninfested and infested with WCR from two wheat cultivars: Byrd (WCM resistant) and Settler CL (WCM susceptible) at 10 dpi. Our transcriptomic analysis revealed the common and specific transcriptomic variations in WCM resistant and susceptible wheat cultivars, chromosome specific location of the differentially expressed genes, and also identified the gene functions and pathways involved in WCM resistance. Collectively, our study provides important insights on wheat defense mechanisms against WCM after long-term feeding.
2023-02-01 | GSE195958 | GEO
Project description:Tan Spot (TS), causal agent Pyrenophora tritici-repentis (Ptr), is a major threat to wheat production due to the lack of resistant cultivars. In our previous work, we identified MAGIC population parental lines exhibiting TS resistance and susceptibility, namely Robigus and Hereward, respectively. To understand the mechanisms underlying these phenotypes, we performed RNA-seq analysis of leaves before and during Ptr interaction. When comparing mock- and Ptr-inoculated samples, differentially expressed genes (DEGs) were identified with DESeq2, leading to the targeting of 15193 DEGs. Functional annotation showed the pathways enzyme classification, solute transport, RNA biosynthesis, protein modification and homeostasis represented 49.5% of DEGs in Robigus. Cellular metabolism pathways were induced, as well as vesicle trafficking, actin polymerization and cellulose. The upregulation of these cell wall related genes along with microscopic data suggested that barrier defence is a major feature of TS resistance in Robigus. Conversely, photosynthesis was the top fifth pathway in Hereward, totalling 389 repressed genes (12.63%). Photosynthesis collapse was linked to the activation of oligosaccharide metabolism and suppression of glycolysis, TCA cycle and amino acids degradation. This may reflect mobilization of host nutrients to Ptr. Our observations could inform wheat-breeding programmes targeting TS resistance.
2022-06-30 | GSE202986 | GEO
Project description:In this study, we performed a comprehensive proteomic analysis of mango leaves inoculated with the leaf spot pathogen A. alternata. Down-regulated proteins during pathogen invasion and colonization were primarily associated with photosynthesis, the phenylpropanoid and flavonoid biosynthesis pathways, and phenylalanine metabolism. In contrast, significantly up-regulated proteins were involved in tyrosine metabolism and the MAPK signaling pathway, highlighting their critical role in host resistance to the leaf spot pathogen. These findings provide valuable data on protein expression changes, offering potential targets for developing novel management strategies to enhance control of leaf spot disease.
2025-05-07 | PXD060671 | Pride