Fungal Genetics and Biology
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From the Guest Editors
Expressed sequence tags and genes associated with loline alkaloid expression by the fungal endophyte Neotyphodium uncinatum
Loline alkaloids (LA), which are 1-aminopyrrolizidines with an oxygen bridge, are produced by Epichloe¨ (anamorph=Neotyphodium) species, endophytes of grasses. LA are insecticidal, thus, helping to protect host plants from insect herbivory. The objective of this study was to identify genes associate...
A high-affinity ammonium transporter from the mycorrhizal ascomycete Tuber borchii
An ammonium transporter cDNA, named TbAMT1, was isolated from the ectomycorrhizal ascomycetous truffle Tuber borchii. The polypeptide encoded by TbAMT1 (52kDa) functionally complements ammonium uptake-defective yeast mutants and shares sequence similarity with previously characterized ammonium transp...
Distribution and localization of microsatellites in the Perigord black truffle genome and identification of new molecular markers.
We surveyed the T. melanosporum genome (1) to characterise its SSR pattern; (2) to compare it with SSR patterns found in 48 other fungal and three oomycetes genomes and (3) to identify new polymorphic SSR markers for population genetics. The T. melanosporum genome is rich in SSRs with 22,425 SSRs wi...
Hyphal and cytoskeleton polarization in Tuber melanosporum: a genomic and cellular analysis.
We have explored the Tuber melanosporum genome sequence by searching for homologs of genes known to play crucial roles in the morphogenesis and cell polarity of yeasts and filamentous fungi. One hundred and forty-nine genes have been identified and functionally grouped according to the deduced amino...
Similar is not the same: Differences in the function of the (hemi-)cellulolytic regulator XlnR (Xlr1/Xyr1) in filamentous fungi.
The transcriptional activator XlnR (Xlr1/Xyr1) is a major regulator in fungal xylan and cellulose degradation as well as in the utilization of d-xylose via the pentose catabolic pathway. XlnR homologs are commonly found in filamentous ascomycetes and often assumed to have the same function in differ...
The UmGcn5 gene encoding histone acetyltransferase from Ustilago maydis is involved in dimorphism and virulence.
We isolated a gene encoding a histone acetyltransferase from Ustilago maydis (DC.) Cda., which is orthologous to the Saccharomyces cerevisiae GCN5 gene. The gene was isolated from genomic clones identified by their specific hybridization to a gene fragment obtained by the polymerase chain reaction (...
The HAP complex in Fusarium verticillioides is a key regulator of growth, morphogenesis, secondary metabolism, and pathogenesis.
Among eukaryotic organisms, the HAP complex is a conserved, multimeric transcription factor that regulates gene expression by binding to the consensus sequence CCAAT. In filamentous fungi, the HAP complex has been linked to primary and secondary metabolism, but its role in pathogenesis has not been...
Distribution, expression and expansion of Aspergillus fumigatus LINE-like retrotransposon populations in clinical and environmental isolates...
We investigate, in clinical and environmental isolates, the structure and distribution of a specific class of A. fumigatus long interspersed nuclear element (LINE)-like retrotransposons occupying subtelomeric loci in the A. fumigatus genome, and probe their stability in response to laboratory- and h...