A computer model of the fungal colony that grew consuming limited amount of nutrient with three control parameters, growth rate, and nutrient level and diffusion, was constructed to make a basic morphology diagram of mycelial colony. To apply the diagram with those parameters to the mycelial growth of Aspergillus nidulans wild and mutant strains, the relation between the colony expansion and th...

Filamentous fungi have been of great interest because of their excellent ability as cell factories to manufacture useful products for human beings. The development of genetic transformation techniques is a precondition that enables scientists to target and modify genes efficiently and may reveal the function of target genes. The method to deliver foreign nucleic acid into cells is the sticking ...

RNase and DNase activities were studied in seven fungi of the subdivisions Ascomycotina, Zygomycotina and Basidiomycotina during their autolysis, and extracellular and intracellular RNase and DNase were found. RNase specific activity reached higher levels than DNase specific activity in the culture liquid and mycelial extract, except in Aspergillus nidulans. Generally maximal RNase specific act...

..................................................................................88 Introduction..............................................................................88 Summary of bud4 and axl2 in Saccharomycetes cerevisiae...............89 Axl2-GFP localization is determined by the cell cycle in yeast. .........90 Secondary development in Aspergillus nidulans.............................

Since 1869 when RAULIN reported that Aspergilluts niger excreted some growth-promoting substances into its medium, a number of investigators have studied the phenomenon of auxithal synthesis by fungi. For a comprehensive review of this the reader is referred to FRIES (2) and SCHLENKER (7). The writers (5) have referred briefly to this subject; the present paper reports a more exhaustive study. ...

Filamentous fungi are important due to their high enzymes production potential. Many enzymes produced by fungi have related to biotechnological applications in several industrial sectors. The purpose of this study was to isolate filamentous fungi from different sources and to screen for amylases production potential. Fifteen fungal isolates of three genera, Aspergilus, Penicillium and Trichoder...

Transformation systems have been reported for a number of filamentous fungi (1) based on the procedure perfected for Neurospora crassa by Case et al. employing sphaeroplasts (2). While efficient transformation is achieved with sphaeroplasts, their preparation demands a careful monitoring of the individual steps, along with optimization of conditions for each batch of cell wall-degrading enzymes...

Conidial anastomosis tubes (CATs) can be recognized in 73 species of filamentous fungi covering 21 genera, and develop in culture and in host-pathogen systems. They have been shown to be morphologically and physiologically distinct from germ tubes in Colletotrichum and Neurospora, and under separate genetic control in Neurospora. CATs are short, thin, usually unbranched and arise from conidia o...

The vast majority of transformation protocols for filamentous fungi are based on permeabilizing cell membranes with polyethylene glycol (PEG) or electroporation. Both methods typically require preparing protoplasts or osmotically sensitive cells prior to transformation (Herzog et al., 1996; Goldman et al., 1990; a detailed review of fungal transformation systems is given by Lemke and Peng, 1995...

Transposons are ubiquitous genetic elements discovered so far in all investigated prokaryotes and eukaryotes. In remarkable contrast to all other genes, transposable elements are able to move to new locations within their host genomes. Transposition of transposons into coding sequences and their initiation of chromosome rearrangements have tremendous impact on gene expression and genome evoluti...