Showing papers in "Experimental Mycology in 1980"

TL;DR: P pairings of monosporous isolates from five European and ten North American biological species of Armillaria reveal that certain species from Europe are interfertile with certain speciesFrom North American, individual strains from one European species are compatible with members of two rigorously intersterile North American species.

TL;DR: Reversible activation of spores at 44 or 50°C in culture medium had a similar effect on nucleoside triphosphate content: the ATP level was high and did not change markedly after activation; the UTP and GTP content showed a clear-cut increase shortly after activation.

TL;DR: There are three different stimuli to which fungi must respond in sequence for the infection structures to develop—cellular junction lines of the epidermis, stomatal guard cells, and the mesophyll cell wall.

TL;DR: This work suggests that CA's primary effect is not related to inhibition of glucose uptake, that it is not acting as a general sulfhydryl reagent, and that the α,β-unsaturated keto moiety is essential for inhibition.

TL;DR: Polyols in the mycelia (or vegetative cells) of 27 species, including representatives from each of the major classes of fungi, were analyzed using thin-layer chromatography, paper electrophoresis, and gas chromatography to confirm that Oomycetes lack sugar alcohols.

TL;DR: Studies involving the transfilter contact of two plasmodia across 1-μm-pore-size Nucleopore filters indicate that heterokyaron incompatibility does not involve a cytoplasmic toxin.

TL;DR: There was no change in either the time course or the extent of GlcNAc kinase induction, indicating that this enzyme is not a control point for the dimorphic development in C. albicans, and it was found that ATP and Mg 2+ were also required for activity.

TL;DR: Mithramycin is shown to be able to reveal details of heterochromatin organization in interphase and dividing nuclei of higher plants and has the potential to help preselect desired nuclei prior to electron microscope studies.

TL;DR: Mycolaminarans are the storage polysaccharides in mycelium, sporangia, zoospores, cysts, and chlamydospores of diverse species of Phytophthora, and there is abundant synthesis and storage of mycolaminaran which are subsequently utilized for the formation of asexual and sexual sporulating structures.

TL;DR: The conversion of yeastlike cells to hyphae inMucor rouxii, a dimorphic mold, was altered by increasing the glucose concentration in the growth medium, which inhibited germ tube biogenesis, reduced hyphal branching, and effected a significant increase in the rate of ethanol accumulation during an air-induced shift in vegetative cell type.

TL;DR: The structural characteristics of these sporulation-deficient mutants compared to wild type and their pleiotropic phenotype indicate that spo mutants are useful tools for probing the genetic control of developmental events.

TL;DR: Complementation between mutants with abnormal phototropism belonging to seven previously established complementation groups showed that in 54 different mating type heterokaryons the pattern of complementation was the same as that earlier described in heterokARYons involving nuclei of the same mating type.

TL;DR: The DNA of homokaryotic and dikaryotic cells is examined by physical methods and reassociation kinetics to find a single unique component accounting for 80–90% of the DNA and with a single repetitive fraction of 10 ± 2% of whole-cell DNA.

TL;DR: The flow characteristics during zoospore release and cytoplasmic discharge from sporangia were studied in double-distilled water using several Phytophthora species andythium aphanidermatum to derive an osmotic pressure-flow model based on the equation of Hagen-Poiseuille.

TL;DR: Spore activation and stimulation of trehalase activity seem to be two independent phenomena in Phycomyces spores.

TL;DR: Any qualitative changes in gene activity induced by antheridiol are quite subtle, and these procedures failed to reveal any alterations in the spectrum of mRNA sequences transcribed and accumulated by Achlya males duringAntheridial branch differentiation.

TL;DR: Equilibrium dissociation constants were identical for both yeast and hyphal binding proteins, suggesting that a decreases in concentration of binding molecules, not a decrease in binding affinity, was responsible for the diminished band density.

TL;DR: 14C-Labeled glycolipids obtained from zoospores of Blastocladiella emersonii were separated into mono-, di-, and polyglycosyldiglycerides by column chromatography and the major fatty acid being palmitic acid was identified as N-acetylglucosaminyl glucosyl-diacylglycerol.

TL;DR: It is concluded that antheridiol-induced differentiation is accompanied by minor transcriptional and translational changes (if any) and that post-translational regulatory events may be required for differentiation.

TL;DR: Glucono-δ-lactone, a glucanase inhibitor, and coumarin, a cellulose biosynthesis inhibitor, affect the hyphal morphogenesis of Saprolegnia monoica and modify thehyphal cytological organization.

TL;DR: Starvation conditions determined whether protease or α-1,3-glucanase provided the source of carbon and energy necessary for fructification, and cAMP varied accordingly, and if circumstances permitted both glucan and protein degradation, the former was used preferentially and resulted in many more cleistothecia.

TL;DR: Tritium-suicide enrichment can be used to isolate cold-sensitive mutants of Neurospora crassa among which a relatively low frequency have conditional defects in ribosome production.

TL;DR: The study of heteroplasmons obtained by mixing together ground mycelia, which differ by their longevities on one band and by their mitochondrial alleles on the other, revealed new types of lengevities, showed that a given mitochondrial type can be dissociated from a given type of longevity determinant.

TL;DR: Investigation of the responses of the nonphototactic mutant P73 of Dictyostelium discoideum to light stimuli have been investigated and compared with those of the axenin strain Ax2, which shows almost normal phototaxis.

TL;DR: Fungi as representative eukaryotes, relationship between rRNA and r-protein synthesis, and the role of rRNA gene inheritance in protein synthesis control are described.

TL;DR: Young hyphae of wild-typeNeurospora crassa curve clockwise, as viewed from above, when grown on agar medium, and coiling may result from axial rotation of the growing hyphal tips.

TL;DR: Procedures were refined and improved for the purification of cytochrome c from Neurospora crassa, for development of specific antisera to the protein, and for immunochemical identification of cy tochrome c after in vivo synthesis and radiolabeling with 3 H and 35 Fe.

TL;DR: Both the yeast and mycelial phase 17 S and 25 S rRNAs ofH.

TL;DR: Natural resistance to 5-fluorocytosine via both defective transport and pyrimidine excretion was observed and the following taxonomic correlations were found: the Ascomycetes utilize exogenous cytidine and/or cytosine, and the lower fungi utilize cytidine but not cytOSine.

TL;DR: The presence of glycolipids in both the plasma membrane and γ-particles, which directly interact with each other, via vesicle fusion, to form the chitinous cell wall, and the biochemical role of gly COLIPids in chitin synthesis in this organism suggest that the glycolIPids may be involved in the regulation of zoospore encystment.