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ABSTRACT:
PROVIDER: PRJNA689981 | ENA |
REPOSITORIES: ENA
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Project description:Southern corn rust (SCR) is one of destructive diseases in maize caused by Puccinia polysora Undrew. (P. polysara), widely occurring in warm-temperate and tropical regions globally. To identify candidate SCR resistance-related proteins and understand the molecular mechanism underlaying the maize and P. polysara interaction, comparative proteomic analysis of susceptible and resistance maize lines was performed. A total of 6,612 proteins were successfully identified using an iTRAQ-based proteomic approach. Fold changes and statistical analysis demonstrated that 687 proteins increased and 802 proteins decreased in the resistant line, while 571 increased and 464 decreased in the susceptible line. One remorin protein, namely ZmREM1.3 (B4G1B0), was significantly induced by SCR in the resistant genotype, while decreased in susceptible genotype after P. polysara infection. Plant-specific remorin proteins have been shown to play important roles during microbial infection and plant signaling processes. Transgenic analysis showed that overexpression of ZmREM1.3 in maize confers enhanced resistance to the biotrophic fungal pathogen SCR. Upon pathogen challenge, the ZmREM1.3-overexpressing plants accumulated higher levels of defense hormones, SA and JA. Moreover, stronger induction of defense gene expression was also observed in ZmREM1.3-overexpressing maize plants in response to SCR infection. Taken together, our results support that ZmREM1.3 plays a positive role in regulating the maize defense against SCR likely through SA/JA-mediated defense signaling pathways. This is the first attempt for large scale analysis of the molecular mechanisms underlaying the maize and P. polysara interaction at the proteomic level, and the first evidence for remorin protein family in resistant to fungal disease.
2019-04-18 | PXD008904 | Pride
Project description:Eucalyptus rust is caused by the biotrophic fungus, Austropuccinia psidii, which affects commercial plantations of Eucalyptus, a major raw material for the pulp and paper industry in Brazil. Aiming to uncover the molecular mechanisms involved in rust resistance and susceptibility in Eucalyptus grandis, we used epifluorescence microscopy to follow the fungus development inside the leaves of two contrasting half-sibling genotypes (rust-resistance and rust-susceptible), to determine the time-course for comparative metabolomic and proteomic analyses in plantlets artificially inoculated with rust. Within 24 hours of complete fungal invasion, a total of 709 plant metabolites showed that the rust-resistant genotype suppressed many metabolites 6 hours after inoculation (hai), with responses being progressively induced after 12 hai. In contrast, the rust-susceptible genotype displayed an alternated metabolite response to infection, which culminated in a strong suppression at 24 hai. Multivariate analyses of genotypes and time points were used to select 16 differential metabolites chemically classified as flavonoids, benzenoids and other compounds. Applying the Weighted Gene Co-Expression Network Analysis (WGCNA), rust-resistant and rust-susceptible genotypes had, respectively, 871 and 852 proteins grouped into 14 and 13 modules, of which 10 and 7 protein modules were significantly correlated to the selected metabolites. Functional analyses revealed roles for oxidative-dependent responses leading to temporal activity of metabolites and proteins after 12 hai in rust-resistance, while the initial over-accumulation of metabolites and correlated proteins caused a lack of progressive response after 12 hai in rust-susceptible genotype. This study provides a brief understand on the temporal divergences of resistant and susceptible molecular responses of E. grandis plants to rust.
2021-09-09 | PXD021280 | Pride
Project description:Expression profiling in Rpp2-resistant (PI230970) and susceptible (Embrapa-48) plant lines to soybean rust from infection to symptom development
2008-02-28 | E-TABM-230 | biostudies-arrayexpress
Project description:Head smut of maize, which is caused by the Sporisorium reilianum f. sp. Zeae (Kühn), has been a serious disease in maize. In order to find head smut resistant candidate genes, microarrays were used to monitor the gene expression profiles between disease resistant near isogenic lines (NIL) L282 and L43, highly resistant inbred line Q319 and highly susceptible inbred line Huangzao4 after 0 to7 days post inoculation of S.reiliana by artificial inoculation method.
2012-08-16 | GSE40052 | GEO
Project description:The biotrophic fungal pathogen Ustilago maydis cause common smut in maize, and lead to gall formation on all aerial organs, especially on maize kernel thus reduce yield. The interaction of U. maydis with maize is a well-established model to study the interaction between maize and biotrophic pathogen. U. maydis infection could activate host immune responses including: ROS accumulation, protease activation, salicylic acid signaling. U. maydis employ several strategies to overcome maize immune response, thus initial the biotrophic interaction with host. It has been suggested that genetic factors of maize host affected the disease severity of U. maydis infection, here we investigated the transcriptome profile of resistance and susceptible maize lines upon U. maydis infection, thus propose candidate maize genes involved in the defense response in maize to corn smut cause by U. maydis.
2021-04-15 | GSE172071 | GEO
Project description:Head smut of maize, which is caused by the Sporisorium reilianum f. sp. Zeae (Kühn), has been a serious disease in maize. In order to find head smut resistant candidate genes, microarrays were used to monitor the gene expression profiles between disease resistant near isogenic lines (NIL) L282 and L43, highly resistant inbred line Q319 and highly susceptible inbred line Huangzao4 after 0 to7 days post inoculation of S.reiliana by artificial inoculation method. Maize leaves were selected at 0d, 1d, 2d, 4d, 7d post inoculation for RNA extraction and hybridization on Affymetrix microarrays. We sought to obtain different expression genes of different varieties at each inoculation stage in order to find head smut resistant candidate genes.
2012-08-16 | E-GEOD-40052 | biostudies-arrayexpress
Project description:Fusarium verticillioides is a detrimental fungus that can contaminate maize grains with mycotoxins that are harmful to human and animal health. Breeding and growing resistant genotypes is one alternative to reduce contamination and subsequent production of mycotoxins by this fungus. However, little is known about the resistant mechanism relevant to breeding in this pathosystem. Therefore, our aim was to identify genes and metabolites that may be related to Fusarium ear rot resistance using resistant and susceptible maize inbreds. Kernels of the resistant inbred showed significantly reduced disease severity, and reduced levels of total fumonisin and ergosterol content compared with the susceptible one. Gene expression data were obtained from microarray hybridizations using F. verticillioides inoculated and non inoculated maize kernels. Differentially expressed sequences were identified and classified into 36 functional categories. Most of the differentially expressed genes were assigned to the categories “protein, RNA, DNA, stress, transport, signaling and cell metabolism”. These genes encode for PR proteins, detoxification and primary metabolism enzymes. Fungal inoculation did not produce considerable changes in gene expression and metabolites in the resistant L4637 inbred, probably due to a preformed or constitutive resistance mechanism. Defense-related genes were induced or repressed in kernels of the susceptible inbred L4674, responding specifically to the pathogen infection. The qRT-PCR in infected silks showed that glucanase, lipid transfer, xylanase inhibitor, PR1 and 26S proteosome transcripts had higher expression ratios in the susceptible line compared to the resistant one in response to fungal infection. Through this study, a global view of differential genes expressed and metabolites concentration during resistance and susceptibility to F. verticillioides inoculation has been obtained, giving additional information about the mechanisms and pathways conferring resistance to this important disease in maize. Global view of differential genes expressed during resistance and susceptibility to F. verticillioides inoculation. Two maize inbred lines : one resistant (L4637) and one susceptible (L4674) to F. verticillioides infection. Two-condition experiment, Inoculated (I) vs. non-inoculated (NI) lines. Biological replicates: 3 . One replicate per array.
2013-08-17 | E-GEOD-40288 | biostudies-arrayexpress
Project description:Aim:To characterise a recently discovered stem rust resistance locus on wheat chromosome 7AL. Transcriptome analysis by RNA-sequencing, in association with microscopic observations, was used to compare responses to the Puccinia graminis f. sp. tritici pathogen of the susceptible line Columbus, and two independent backcrossed resistant lines containing the locus, Columbus-NS765 and Columbus-NS766. Results: Microscopic observations of infected leaves revealed that the resistance conferred by the 7AL resistance locus was initiated by two days post-inoculation, upon the entry of the stem rust fungus into the plant through the stoma. Death of guard and epidermal cells adjacent to the fungal points of entry was observed to be clearly more frequent in resistant lines than in the susceptible genotype, suggesting that the resistance response is similar in all genotypes, but enhanced in the resistant lines. Transcriptomic analysis, combined with assignment of genes to wheat chromosomes, revealed a disporportionately high number of differentially expressed genes were located on chromosomes 7AL and 6A. A number of genes annotated as cysteine-rich receptor-like kinases were located on chromosome 7AL. Closer investigation indicated that the encoded proteins were in fact putative receptor-like cytoplasmic kinases (RLCKs). One of the putative RLCK genes contained a SNP marker previously shown to co-segregate with the 7AL resistance locus. The large number of differentially expressed genes on chromosome 6A indicated the presence of a large introgression on this chromosome that co-segregated with stem rust resistance in the two independent resistant lines, but its role in the resistance response is currently unclear. Conclusions: This study represents the first transcriptome analysis of responses to stem rust in wheat, and the first investigation of the resistance conferred by the newly-discovered wheat 7AL stem rust resistance locus. Microscopy showed the resistance response was associated with pre-haustorial cell death. Results of the RNA-seq, which has the resolution to discriminate between homeologous wheat genes, along with assignment of differentially expressed genes to wheat chromosomes, suggested putative receptor-like cytoplasmic kinases linked to the 7AL locus as candidate resistance genes for further investigation.
2017-02-22 | GSE83149 | GEO
Project description:The maize inbred lines Chang7-2 (resistant to SCMV) and Mo17 (susceptible to SCMV) were inoculated with SCMV (SC, SM) and phosphate buffer (MC, MM), respectively to subjected to whole-transcriptome RNA sequencing and degradome sequencing.
2024-08-01 | GSE233952 | GEO