Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| hemolytic activity of rhizopus nigricans and rhizopus arrhizus. | 1970 | 5466029 | |
| preliminary characterization of the hemolysin of rhizopus nigricans. | 1970 | 5466030 | |
| [method for determination of bacterial mobility by culture on rhizopus nigricans]. | 1970 | 5426400 | |
| transformation of progesterone by rhizopus nigricans ref 129 as influenced by modification of the fermentation medium. | 1970 | 5460205 | |
| acidic polysaccharides from the cell wall of absidia cylindrospora, mucor mucedo, and rhizopus nigricans. | 1970 | 5471789 | |
| [rhizopus nigricans ehrenberg. first results of the physico-chemical and biological study of a culture filtrate]. | 1970 | 5500091 | |
| transformation of progesterone by aspergillus niger 100 and rhizopus nigricans ref, 129. | 1970 | 5420621 | |
| organization of enzymes in the common aromatic synthetic pathway: evidence for aggregation in fungi. | centrifugation in sucrose density gradients of partially purified extracts from six species of fungi, i.e., rhizopus stolonifer, phycomyces nitens, absidia glauca (phycomycetes), aspergillus nidulans (ascomycetes), coprinus lagopus, and ustilago maydis (basidiomycetes), indicate that the five enzymes catalyzing steps two to six in the prechorismic acid part of the polyaromatic synthetic pathway sediment together. the sedimentation coefficients for these enzymes are very similar in the six specie ... | 1969 | 5802608 |
| microbiological transformations. i. hydroxylation of progesterone at c-11 by rhizopus nigricans and penicillium oxalicum. | 1969 | 5380069 | |
| inactivation of rhizopus stolonifer sporangiospores by single and combined treatments of heating, chilling, and gamma-irradiation. | 1969 | 5821201 | |
| ultrastructural changes in rhizopus stolonifer sporangiospores in response to anaerobiosis. | rhizopus stolonifer sporangiospores developed prominent ultrastructural changes under anoxia. mitochondria were scattered randomly throughout the cytoplasm in spores incubated aerobically for 3 hr, but moved to the periphery of the cytoplasm when the spores were exposed to anoxia. endoplasmic reticulum, inconspicuous in control spores, appeared near the plasmalemma and was frequently found connected to a nuclear membrane. the cytoplasm, otherwise usually uniformly dense and containing abundant r ... | 1969 | 5784225 |
| [hydroxylation of progesterone by rhizopus nigricans]. | 1969 | 4981103 | |
| pyruvate carboxylase of rhizopus nigricans and its role in fumaric acid production. | 1969 | 5349282 | |
| protein synthesis during fungal spore germination. iv. transfer ribonucleic acid from germinated and ungerminated spores. | transfer ribonucleic acid (trna) fractions isolated from germinated and ungerminated spores of botryodiplodia theobromae and rhizopus stolonifer had acceptor activity for all 20 amino acids commonly found in protein, when tested with an enzyme fraction from germinated spores. accordingly, it is unlikely that the absence of trna for a particular amino acid limits protein synthesis in fungal spores. | 1969 | 5364287 |
| formation and regeneration of protoplasts in the mold rhizopus nigricans. | 1968 | 5672584 | |
| ultrastructural details in germinating sporangiospores of rhizopus stolonifer and rhizopus arrhizus. | electron microscope examination of sporangiospore sections from rhizopus stolonifer (ehrenb. ex fr.) lind. and r. arrhizus fischer revealed details on intracellular organization not previously reported. aldehyde fixation followed by chromeosmium postfixation permitted clear depiction of ribosomes hitherto unrevealed in these cells. mitochondria were diversiform. spore wall structures in the two species were generally similar, but outer contours differed sufficiently to permit easy species identi ... | 1968 | 4876136 |
| influence of phosphate compounds on certain fungi and their preservative effects on fresh cherry fruit (prunus cerasus, l.). | studies were conducted to ascertain the retarding effects of four phosphate compounds (sodium hexametaphosphate, sodium tripolyphosphate, sodium tetraphosphate, and tetrasodium pyrophosphate) on molding of fresh cherries (prunus cerasus, l.). in vitro studies on their antimycotic effects against the most common fungal spoilers, penicillium expansum, rhizopus nigricans, and botrytis sp., were also carried out. sodium tetraphosphate appeared to be the most effective compound in preserving cherries ... | 1968 | 4295176 |
| control of malate synthase formation in rhizopus nigricans. | the control of malate synthase formation in a fumaric acid-producing strain of rhizopus nigricans has been found to be similar in most respects to that of isocitrate lyase, the companion enzyme of the glyoxylate bypass. a basal level is formed in a casein hydrolysate medium, which is repressed by glucose. utilization of glucose during growth results in relief of glucose repression. any factor which stimulates growth promotes relief of glucose repression by enhancing the incorporation of represso ... | 1967 | 6074401 |
| effects of chemical protection on repair of potentially lethal irradiation injury in rhizopus stolonifer sporangiospores. | 1967 | 6019779 | |
| mechanism of fumaric acid accumulation in rhizopus nigricans. | it is doubtful that the glyoxylate bypass plays a significant role in the accumulation of fumaric acid by fungi, as has been postulated. in high glucose media, which favor fumarate production, isocitrate lyase (threo-d(s) isocitrate glyoxylate lyase), which is the key enzyme of the glyoxylate bypass, is strongly repressed. the specific activity of this enzyme remains low as long as glucose is present in the medium, even though fumarate formation proceeds at a high level. in addition, the activit ... | 1967 | 6020565 |
| substrate effect on 2,3-butylene glycol production by rhizopus nigricans and penicillium expansum. | rhizopus nigricans and penicillium expansum produced 2,3-butylene glycol which accumulated in natural and artificial media with time. mycelial mats of p. expansum decreased the quantity of a diacetyl substrate and converted part of this substrate into acetylmethylcarbinol (amc) and 2,3-butylene glycol. mycelial mats of p. expansum also decreased amc substrate with the formation of 2,3-butylene glycol. 2,3-butylene glycol decreased slightly during incubation with the fungal mat. the formation of ... | 1967 | 6080717 |
| ultrasound and the ultramicroscopic structure of rhizopus nigricans. | 1966 | 5990081 | |
| fungistatic effects of controlled atmospheres. | the fungistatic effects of controlled atmospheres composed of increased co(2) and decreased o(2) was studied in a manner such that the condition of stored fruit was not a factor in the growth of the fungi. varying concentrations of o(2) and co(2) were used. the fungi used were botrytis alli, rhizopus nigricans, and penicillium expansum. the results showed that controlled atmospheres, within the limits of concentrations usable for fruit storage, are effective fungistatic agents. | 1966 | 5951331 |
| an oxygen-dependent postirradiation restoration of rhizopus stolonifer sporangiospores. | 1964 | 14157357 | |
| some factors influencing the efficiency of production of acetylmethylcarbinol by rhizopus nigricans. | incubation time had no effect on the efficiency ratio [dry weight-acetylmethylcarbinol (amc)] during the incubation times tested. the mycelium was more efficient in synthetic media at ph 3 and 4 than at ph 5 and 6. mycelium also produced amc more efficiently in apple juice and in synthetic media containing yeast extract or vitamins, especially thiamine. kcl, mgso(4), and kh(2)po(4) had significant suppressing effects on amc production in a synthetic medium. | 1964 | 14131362 |
| control of isocitratase formation in rhizopus nigricans. | wegener, warner s. (university of cincinnati, cincinnati, ohio), and antonio h. romano. control of isocitratase formation in rhizopus nigricans. j. bacteriol. 87:156-161. 1964.-a fumaric acid-producing strain of rhizopus nigricans was found to produce a fair level of isocitratase in a casein hydrolysate medium. glucose repressed enzyme formation. when glucose was utilized during growth, there was a relief of repression, and enzyme synthesis was resumed at a rate equivalent to that found in nonre ... | 1964 | 14102849 |
| zinc stimulation of rna and protein synthesis in rhizopus nigricans. | addition of 1.7 x 10-(5)m zinc sulfate to cultures of rhizopus nigricans increases growth and substrate utilization. analysis of cells during the course of growth, after addition of the metal, showed that there was an immediate increase in rna, followed by a corresponding increase in protein and cell mass. the dna content was affected to a lesser extent. it is postulated that zn(++) stimulates growth through a primary effect on rna synthesis. | 1963 | 14075699 |
| production of pectolytic enzymes by rhizopus stolonifer sporangiospores after "lethal" gamma irradiation. | irradiated sporangiospores of rhizopus stolonifer excreted pectolytic enzymes, which hydrolyzed pectin and macerated potato tuber discs, into the suspending medium. pectin glycosidase, but not pectin methylesterase, activity developed regardless of the amount of radiation the spores had received, unless the dose exceeded about 1 megarad. the ability to produce pectolytic enzymes was found to be more radiation-resistant than the potential for colony formation or the ability to germinate. spores m ... | 1963 | 16349638 |
| submicroscopic morphology of rhizopus nigricans. | 1963 | 14061859 | |
| fungi associated with softening of bisulfite-brined cherries. | softening of sound, calcium bisulfite-brined cherries was induced fairly quickly by brining them with cherries rotted by aspergillus niger, cytospora leucostoma, and penicillium expansum, but not with cherries rotted by a variety of other microorganisms, including alternaria sp., aspergillus oryzae, aureobasidium pullulans, botrytis cinerea, cladosporium sp., mucor racemosus, rhizopus stolonifer, and sclerotinia fructicola. rapid softening was correlated with the presence of a bisulfite-stable p ... | 1963 | 16349630 |
| recovery of gamma irradiated rhizopus stolonifer sporangiospores during autoinhibition of germination. | 1963 | 13978189 | |
| survey of selected filamentous fungi for voges-proskauer reactions. | of 16 filamentous fungi surveyed for voges-proskauer reactants, 81.2% were found to be positive. the total group fell into three classes: those producing considerable acetylmethylcarbinol (amc), those producing a small amount, and those producing no amc. oidium lactis had a highly significant effect upon lowering the amount of voges-proskauer reactants produced by rhizopus nigricans. | 1962 | 13945071 |
| ballistic disruption of penicillium chrysogenum cells. | the use of glass beads in a high-speed mixing device to rupture organisms was applied to molds. the use of a mixer in which the propellor shaft enters from the top into a metal mixing chamber made it possible to immerse the whole device in a salt water and ice mixture so that the temperature of the glass-bead slurry could be kept below 5 c without difficulty. mycelia, glass beads, and buffer in a 1:2:3 (w/w) ratio gave above 95% breakage in 15 min with penicillium chrysogenum cells and in 4 min ... | 1962 | 13952345 |
| [biological transformation of 16alpha,17alpha-dihydroxyprogesterone with the aid of the fungus rhizopus nigricans]. | 1962 | 13865059 | |
| continuous microbiological transformation of steroids. | continuous fermentation trials on the bioconversions of pregnadiene to pregnatriene by septomyxa affinis and progesterone to 11alpha-hydroxyprogesterone by rhizopus nigricans were conducted successfully in an eight-stage pilot plant reactor. the first stage was used as the mycelial growth stage while the steroid solutions were added continuously to stage 2, thus using the remaining stages as conversion vessels. recoveries of 50 to 60% oxidized steroid (based on total steroid supplied) were obtai ... | 1961 | 13740999 |
| [the notion of apical dominance in rhizopus nigricans ehrenberg]. | 1961 | 14462470 | |
| [observations on hydrotropism in rhizopus nigricans]. | 1959 | 13766172 | |
| the mineral nutrition of rhizopus stolonifer. | 1957 | 13491800 | |
| chemotropism in rhizopus nigricans; the staling reaction. | 1952 | 14938407 | |
| [use of rhizopus nigricans in biological tests; preliminary note]. | 1952 | 13121504 | |
| aerobic formation of fumaric acid in the mold rhizopus nigricans, synthesis by direct c2 condensation. | 1949 | 15398809 | |
| carbon dioxide inhibition of anaerobic fumarate formation in the mold rhizopus nigricans. | 1949 | 18113497 | |
| anaerobic formation of fumaric acid by the mold rhizopus nigricans. | 1948 | 18880574 | |
| anaerobic formation of fumaric acid by the mold rhizopus nigricans. | 1948 | 16561577 | |
| fumaric acid formation associated with sexuality in a strain of rhizopus nigricans. | 1939 | 17732505 | |
| isoelectric points for the mycelium of fungi. | 1. mycelium of rhizopus nigricans when stained with certain acid and basic dyes and washed with buffer mixtures of 0.1 m phosphoric acid and sodium hydroxide responded much like an amphoteric colloid with an isoelectric point near ph 5.0. 2. when grown on potato dextrose agar the reaction of which was varied with phosphoric acid the extent of colony growth of rhizopus nigricans plotted against the initial sörensen value of the agar produced a double maximum curve with the minimum between the two ... | 1924 | 19872067 |
| longevity in spores of aspergillus oryzae and rhizopus nigricans. | 1923 | 17774267 | |
| zygospores and sexual strains in the common bread mould, rhizopus nigricans. | 1906 | 17772189 |