Project description:Genomic, tanscriptomic and metabolimic analyses of Amorphophallus albus provides insights into the evolution and resistance to southern blight pathogen
Project description:Southern corn leaf blight (SCLB), caused by Bipolaris maydis, poses a serious threat to maize production worldwide. In our previous study, Bacillus velezensis BV3 was isolated and demonstrated strong antagonistic activity against maize leaf spot pathogens and effective disease control in greenhouse experiments.
Project description:Late blight, caused by the oomycete Phytophthora infestans, is one of the most damaging potato diseases. Genetic resistance is one of the most effective means to control the destruction caused by this pathogen. Transgenic potato lines harboring a resistance gene, RB, confer broad-spectrum, rate-reducing late blight resistance. A microarray approach was used to understand what genes are manipulated in the potato background after the addition of the RB gene that contribute to the late blight resistant phenotype. Keywords: Time course, disease state analysis
Project description:Late blight, caused by the oomycete Phytophthora infestans, is one of the most damaging potato diseases. Genetic resistance is one of the most effective means to control the destruction caused by this pathogen. Transgenic potato lines harboring a resistance gene, RB, confer broad-spectrum, rate-reducing late blight resistance. A microarray approach was used to understand what genes are manipulated in the potato background after the addition of the RB gene that contribute to the late blight resistant phenotype. Keywords: Time course, disease state analysis CRD (3x2x2) Split-Split Plot: 3 sampling time points after inoculation (2, 5, 10 hours), Two genotypes (Katahdin with and without the RB gene), Inoculation with P. infestans or mock inoculation with water. 48 arrays were hybridized in total; 12 in each biological replicate. Each genotype with the mock and late blight inoculated samples was hybridized on two arrays using a dye-swap procedure. Each genotype had a total of 6 arrays across the three sampling time points.
Project description:Bacterial blight (BB), caused by Xanthomonas oryzae pv. oryzae (Xoo), is one of the most destructive diseases affecting rice production worldwide. In this study, the wild rice accession Oryza rufipogon Wild173 (UP36) exhibiting strong resistance to multiple Xoo strains was investigated in comparison with the susceptible rice cultivar Longjing-31 (CK2). To explore the molecular mechanisms underlying bacterial blight resistance, transcriptome sequencing (RNA-seq) was performed on leaf tissues collected from resistant and susceptible plants following inoculation with the Xoo strain PXO99A. Comparative transcriptomic analysis was conducted to identify differentially expressed genes associated with defense responses. The dataset provides insights into transcriptional reprogramming during pathogen infection and facilitates the identification of candidate genes and defense-related pathways involved in bacterial blight resistance in rice. These data provide valuable resources for understanding host–pathogen interactions and for improving disease resistance in rice breeding programs.
Project description:Seedlings blight is one of the destructive diseases of rice, caused by the fungus Fusarium oxysporum, which impairs rice productions. Fluoro-substituted benzothiadiazole derivatives (FBT) and chitosan oligosaccharide (COS) are elicitors that can enhance plant resistance to pathogen infection. However, there is a lack of information regarding FBT and COS used as elicitors in rice seedlings blight. Therefore, the aim of this study was to evaluate the effect of FBT and COS treatments against rice seedling blight and elucidate the possible molecular mechanisms of the two elicitors for inducing resistance by proteomics. The results showed that FBT and COS significantly reduced the disease incidence and index, and improved the growth status of rice root caused by F. oxysporum. Biochemical analysis demonstrated that the two elicitors effectively enhanced activities of defense enzymes. Moreover, proteomic profiling analysis of rice root tissues disclosed more differentially expressed proteins in diterpenoid biosynthesis pathway induced by the two elicitors compared with other biological pathways, resulting in the accumulation of antimicrobial substance--momilactone. This study provided the basis of theory and application for FBT and COS used as rice elicitors against seedling blight on roots.
