Project description:The presence of genetic groups of the entomopathogenic fungus Metarhizium anisopliae in soil is shaped by its adaptability to specific soil and habitat types, and by soil insect populations. Although the entomopathogenic life style of this fungus is well studied, its saprophytic life style has received little consideration. While a set of functionally related genes can be commonly expressed for the adaptability of this fungus to different environments (insect cuticle, insect blood and root exudates), a different subset of genes is also expected for each environment. In order to increase the knowledge of the potential use of M. anisopliae as a rhizosphere competent organism, in this study we evaluated the genetic expression of this fungus while growing on plant root exudates in laboratory conditions during a time course.
Project description:The presence of genetic groups of the entomopathogenic fungus Metarhizium anisopliae in soil is shaped by its adaptability to specific soil and habitat types, and by soil insect populations. Although the entomopathogenic life style of this fungus is well studied, its saprophytic life style has received little consideration. While a set of functionally related genes can be commonly expressed for the adaptability of this fungus to different environments (insect cuticle, insect blood and root exudates), a different subset of genes is also expected for each environment. In order to increase the knowledge of the potential use of M. anisopliae as a rhizosphere competent organism, in this study we evaluated the genetic expression of this fungus while growing on plant root exudates in laboratory conditions during a time course. One fungal strain: Metarhizium anisopliae ARSEF 2575; Five time conditions: 0h, 1h, 4h, 8h, 12h; Five-condition experiment: Time0h vs. Time1h, Time1h vs. Time4h, Time4h vs. Time8h, Time8h vs. Time12h and Time12h vs. Time0h. Two Biological replicates: independently grown and harvested. Three replicates per array. Dye-swap was performed on replicate 2.
Project description:Lysine acetylation emerging as a ubiquitous and conserved posttranslational modification plays an important regulatory role in almost every aspect of eukaryotes and prokaryotes. To gain insight into the nature, extent and biological function of lysine acetylation in Beauveria bassiana, a filamentous entomopathogenic fungus, we used immunoaffinity-based acetyl-lysine peptide enrichment integrated with high resolution mass spectrometry to comprehensively characterize lysine acetylated proteins in this fungus. Here we identified a total of 283 proteins with 464 acetylated sites, representing the first acetylproteome reported to date in filamentous fungi. Bioinformatics analysis of this acetylome showed that the acetylated proteins are involved in a wide range of cellular functions, such as metabolism, transcription, and exhibit diverse subcellular localizations. Enrichment of molecular function, biological process, and KEGG pathway implied that identified acetylated proteins of B. bassiana were very important in chromatin organization, ribosome, nucleosome assembly, carbon metabolism, and biosynthesis of secondary metabolites. Moreover, we matched five conserved lysine acetylated motifs containing of KacY, KacH, KacF, FxKac, KacxxxxK and one specific motif KacW in B. bassiana. Taken together, our acetylome analysis revealed a surprising breadth of cellular processes affected by lysine acetylation and also furnishes some fresh intervention nodes for the rational improvement of the friednly entomopathogenic fungus.