Project description:Fusarium graminearum can infect maize stalk causing Gibberella stalk rot. We want to know the whole genome wide gene profiling when infecting maize stalk.
Project description:Fusarium graminearum can infect maize stalk causing Gibberella stalk rot. We want to know the whole genome wide gene profiling when infecting maize stalk. Using lasr capture microdisecction, we captured 8 time points infecting hyphae samples for maize stalk and after two-round amplification, we hybrid the aRNA to Affymetrix array.
Project description:This experiment is to assess the changes of maize genes expression in response to Fusarium graminearum stains wild-type PH-1 and Δcfem1 mutant. F. graminearum is the major casual fungal pathogen of Gibberella stalk rot on maize.
Project description:Fusarium verticillioides (F. verticillioides) stalk rot is one of the most devastating diseases of maize that causes significant yield losses and poses potential security concerns of foods worldwide. The underlying mechanisms of maize plants regulating defense against the disease remain poorly understood. Here, integrative proteomic and transcriptomic analyses were employed to identify pathogenies-related protein genes by comparing differentially expressed genes (DEGs) and proteins (DEPs) in maize stalks after inoculated with F. verticillioides.
Project description:Stalk borers are major pests for some of the most important crops in the world, such as maize or rice. Plant defense mechanisms against these herbivores have been poorly investigated. The maize´s stalk responds to insect feeding activating defense genes including hormone biosynthetic-related or proteinase inhibitor transcripts. The most outstanding conclusion is that cells in the maize´s stalk undergo cell wall fortification after corn borer tunneling. We performed a gene expression profiling to identify those genes differentially expressed in maize after infestation with the corn borer S. nonagrioides.
Project description:Fusarium graminearum is a major pathogen of Fusarium head blight in wheat, barley, and rice, as well as ear rot and stalk rot in maize. Regulatory Factor X (RFX) transcription factors are well-conserved in animals and fungi, but their functions are diverse, ranging from DNA-damage response to ciliary gene regulation. We investigated the role of the sole RFX transcription factor, RFX1, in F. graminearum. Deletion of rfx1 resulted in multiple defects in hyphal growth, conidiation, virulence, and sexual development. Deletion mutants of rfx1 were more sensitive to various types of DNA damage than the wild-type strain. Septum formation was inhibited and micronuclei were produced in the rfx1 deletion mutants. The results of the neutral comet assay demonstrated that disruption of rfx1 function caused spontaneous DNA double-strand breaks. To understand regulatory mechanisms of rfx1 in F. graminearum, we obtained and analyzed genome-wide transcription profiles generated from the RNA-sequencing data of the wild-type and Δrfx1 strains. RNA-sequencing-based transcriptomic analysis revealed that RFX1 suppressed the expression of many genes, including genes for the repair of DNA damage.
