| lack of antibody induction by histolyn-cyl, a new skin-testing reagent for histoplasmosis. | histolyn-cyl, a yeast phase skin-test reagent, was administered to 85 histoplasmin-sensitive subjects living in the united states and south america. in a multicenter study, sera were obtained at the time the skin tests were read and again 3 weeks later. in no instance did the skin test induce significant complement-fixing antibody changes or antibodies detected by immuno-diffusion. | 1985 | 3934772 |
| legionella anisa: a new species of legionella isolated from potable waters and a cooling tower. | between march 1980 and june 1981, five strains of legionella-like organisms were isolated from water. four were recovered from potable water collected from hospitals in chicago, ill., and los angeles, calif., during outbreaks of nosocomial legionellosis. the fifth strain was isolated from water collected from an industrial cooling tower in jamestown, n.y. the strains exhibited biochemical reactions typical of legionella species and were gram-negative motile rods which grew on buffered charcoal-y ... | 1985 | 3985609 |
| almond harvesting, processing, and microbial flora. | this survey was set up on a statistical sampling plan to determine the microbial quality of almonds as they are received at the processing plant. the total aerobic bacterial count and yeast and mold count distribution were skewed by a few high counts compared with the majority of relatively low counts. hard shell varieties of almonds had lower counts than did soft shell, and almonds with complete shells had lower counts than shelled almonds. almonds harvested onto canvas had lower counts than th ... | 1970 | 4921060 |
| microorganisms of the san francisco sour dough bread process. i. yeasts responsible for the leavening action. | two hundred isolates from san francisco sour dough french bread fermentations (40 from each of five different bakeries) were screened by fermentation tests and for their ability to grow in the presence of cycloheximide (actidione). all of the isolates from four of the bakeries and 70% of those from the fifth were unable to utilize maltose but grew well on other sugars, even in the presence of cycloheximide. the remaining few isolates from the fifth bakery utilized maltose but not galactose and w ... | 1971 | 5553284 |
| microorganisms of the san francisco sour dough bread process. ii. isolation and characterization of undescribed bacterial species responsible for the souring activity. | a medium was developed which permitted isolation, apparently for the first time, of the bacteria responsible for the acid production in the 100-year-old san francisco sour dough french bread process. some of the essential ingredients of this medium included a specific requirement for maltose at a high level, tween 80, freshly prepared yeast extractives, and an initial ph of not over 6.0. the bacteria were gram-positive, nonmotile, catalase-negative, short to medium slender rods, indifferent to o ... | 1971 | 5553285 |
| candida caseinolytica sp. nov., a new species of yeast occurring in necrotic tissue of opuntia and stenocereus species in the southwestern united states and baja california, mexico. | we describe candida caseinolytica, a new yeast species which occurs in rotting tissues of opuntias and other cacti in the north american sonoran desert and a few other localities. this small-celled, slowly growing yeast does not ferment any sugar and assimilates a limited number of carbon compounds, including 2- and 5-ketogluconic acids. it exhibits strong extracellular proteolytic activity on casein at ph 6.5, but gelatin is not hydrolyzed or is only weakly hydrolyzed by a few strains. the type ... | 1994 | 7981095 |
| [taxonomic identification of saccharomyces from yeast genetic stock centers of the university of california]. | the hybrids between saccharomyces cerevisiae sensu naumov et al. 1983, s. bayanus sensu vaughan martini et kurtzman 1985, s. paradoxus sensu naumov 1986 tester strains and greatly abundant saccharomyces genetic lines were analyzed. the latters were showed to classify as saccharomyces cerevisiae species. the intraspecific hybrids are fertile and give normal meiotic segregations of control markers, the interspecific hybrids are characterized by sterility through the unviability of ascosporous post ... | 1994 | 8188045 |
| asca test is commercially available! anti-saccharomyces cerevisiae mannan antibodies. | | 1999 | 10445577 |
| salinivibrio costicola subsp. vallismortis subsp. nov., a halotolerant facultative anaerobe from death valley, and emended description of salinivibrio costicola. | strain dvt, a halotolerant, gram-negative, facultatively anaerobic bacterium, was isolated from a hypersaline pond located in death valley, california. the cells were non-spore-forming, motile, curved rods (1.0-1.8 x 0.5-0.6 microns) and occurred singly, in pairs or rarely in chains. strain dvt was oxidase-, catalase-, voges-proskauer-, amylase-, gelatinase- and lipase-positive and indole-negative. nitrate, sulfate and fumarate were not used as electron acceptors. carbohydrates served as energy ... | 2000 | 10758867 |
| canine atopic dermatitis: a retrospective study of 266 cases examined at the university of california, davis, 1992-1998. part i. clinical features and allergy testing results. | the medical records of 266 dogs diagnosed as having atopic dermatitis were reviewed. statistical data were evaluated referable to breed predilections, clinical signs and positive reactions to allergens. positive reactions were most common to house dust mites (more common with clinical signs in the fall) followed by moulds (more common with clinical signs in the fall and spring). dogs with positive reactions to moulds, trees or cultivated plants were more likely to have skin and ear yeast infecti ... | 2002 | 11972892 |
| a founder mutation in artemis, an snm1-like protein, causes scid in athabascan-speaking native americans. | athabascan scid (scida) is an autosomal recessive disorder found among athabascan-speaking native americans and is manifested by the absence of both t and b cells (t(-)b(-)nk(+) scid). we previously mapped the scida gene to a 6.5-cm interval on chromosome 10p. scida fibroblasts were found to have defective coding joint and reduced, but precise signal joint formation during v(d)j recombination. after excluding potential candidate genes, we conducted a combined positional candidate and positional ... | 2002 | 12055248 |
| tindallia californiensis sp. nov., a new anaerobic, haloalkaliphilic, spore-forming acetogen isolated from mono lake in california. | a novel extremely haloalkaliphilic, strictly anaerobic, acetogenic bacterium strain apo was isolated from sediments of the athalassic, meromictic, alkaline mono lake in california. the gram-positive, spore-forming, slightly curved rods with sizes 0.55-0.7x1.7-3.0 microm were motile by a single laterally attached flagellum. strain apo was mesophilic (range 10-48 degrees c, optimum of 37 degrees c); halophilic (nacl range 1-20% (w/v) with optimum of 3-5% (w/v), and alkaliphilic (ph range 8.0-10.5, ... | 2003 | 12728359 |
| the yeast flora of the coast redwood, sequoia sempervirens. | only four yeast species could be isolated from young and perannual shoots of the coast redwood tree, sequoia sempervirens, and from soil beneath the trees, viz. both varieties of debaryomyces hansenii, trichosporon pullulans, t. porosum and an unidentified red basidiomycetous yeast. | 2003 | 12879747 |
| anaerobranca californiensis sp. nov., an anaerobic, alkalithermophilic, fermentative bacterium isolated from a hot spring on mono lake. | a novel, obligately anaerobic, alkalithermophilic, chemo-organotrophic bacterium was isolated from the sediment of an alkaline hot spring located on paoha island in mono lake, california, usa. this rod-shaped bacterium was motile via peritrichous flagella. isolated strains grew optimally in 5-25 g nacl l(-1), at ph 9.0-9.5 and at a temperature of 58 degrees c and were fermentative and mainly proteolytic, utilizing peptone, casamino acids and yeast extract. optimal growth was seen in the presence ... | 2004 | 15143017 |
| evaluation of wetland and tertiary wastewater treatments for estrogenicity using in vivo and in vitro assays. | the effects of wetland wastewater treatment on estrogenic activity and estrogenic activity of water after tertiary treatment were evaluated using in vivo (rainbow trout vitellogenin [vtg] expression) and in vitro (yeast estrogen screening) assays. juvenile rainbow trout exposed to tertiary-treated wastewater from the green acres treatment plant in orange county water district had increased plasma vtg levels compared with control fish. when trout were exposed to wastewater-dominated water before ... | 2005 | 15657809 |
| identification and possible disease mechanisms of an under-recognized fungus, aureobasidium pullulans. | investigations into the occurrence and health effects of yeast-like fungi in the outdoor air in the us have been limited. we sought to identify a respirable-sized fungus common in the pasadena air, locate a major source for the emissions and investigate its relevance to allergic disease. | 2006 | 16276113 |
| molecular diversity and intragenomic variability in the yeast genus xanthophyllomyces: the origin of phaffia rhodozyma? | the teleomorphic basidiomycetous yeast xanthophyllomyces dendrorhous is important as a commercial source of astaxanthin, which is a component of feeds for mariculture. phaffia rhodozyma is the anamorphic state of xanthophyllomyces; however, there are conflicting reports in the literature concerning the presence of a sexual cycle in p. rhodozyma. the current study attempted to explain this enigma. strains were obtained from the phaff yeast culture collection (university of california, davis) and ... | 2007 | 17825066 |
| selenate-dependent anaerobic arsenite oxidation by a bacterium from mono lake, california. | arsenate was produced when anoxic mono lake water samples were amended with arsenite and either selenate or nitrate. arsenite oxidation did not occur in killed control samples or live samples with no added terminal electron acceptor. potential rates of anaerobic arsenite oxidation with selenate were comparable to those with nitrate ( approximately 12 to 15 mumol.liter(-1) h(-1)). a pure culture capable of selenate-dependent anaerobic arsenite oxidation (strain ml-srao) was isolated from mono lak ... | 2008 | 18326681 |
| description of a distinctive aflatoxin-producing strain of aspergillus nomius that produces submerged sclerotia. | a new distinctive strain of aspergillus nomius that produces the potent mycotoxins, aflatoxins, is described from pistachio, pecan, and fig orchards in california. similar to the typical strain of a. nomius (as represented by the ex-type), the o strain produced both b and g aflatoxins but not cyclopiazonic acid, had similar conidial ornamentation, and grew poorly at 42 degrees c. furthermore, previous published dna sequence supports that the new strain is very closely related to the ex-type of a ... | 2009 | 19484504 |
| first reported case of cryptococcus gattii in the southeastern usa: implications for travel-associated acquisition of an emerging pathogen. | in 2007, the first confirmed case of cryptococcus gattii was reported in the state of north carolina, usa. an otherwise healthy hiv negative male patient presented with a large upper thigh cryptococcoma in february, which was surgically removed and the patient was started on long-term high-dose fluconazole treatment. in may of 2007, the patient presented to the duke university hospital emergency room with seizures. magnetic resonance imaging revealed two large cns lesions found to be cryptococco ... | 2009 | 19516904 |
| spirochaeta dissipatitropha sp. nov., an alkaliphilic, obligately anaerobic bacterium, and emended description of the genus spirochaeta ehrenberg 1835. | a novel obligately anaerobic, mesophilic, alkaliphilic spirochaete, strain aspc2(t), was isolated from an anaerobic sediment of alkaline, hypersaline owens lake in california, usa. the gram-negative cells are motile, helical in shape and 0.23 x 8.0-18.0 mum. growth occurs within the following ranges: 13-41 degrees c, with optimal growth at 35 degrees c; 1-3 % (w/v) nacl, with optimal growth at 2 % (w/v) nacl; and ph 7.8-10.5, with optimal growth at ph 10.0. the novel isolate is strictly alkaliph ... | 2009 | 19578151 |
| the effect of selenium supplementation on dth skin responses in healthy north american men. | the trace element selenium (se) is essential for immune system development and function in animals. however, the exact functions of se in the human immune system and the achievable health benefits from se supplementation remain unclear. to test whether an increased intake of dietary se affects immune function, we conducted a randomized, controlled trial of se supplementation in healthy free-living men. forty-two men were administered 300microg of se a day as high-se baker's yeast, or low-se yeas ... | 2009 | 19747623 |
| cloning large natural product gene clusters from the environment: piecing environmental dna gene clusters back together with tar. | a single gram of soil can contain thousands of unique bacterial species, of which only a small fraction is regularly cultured in the laboratory. although the fermentation of cultured microorganisms has provided access to numerous bioactive secondary metabolites, with these same methods it is not possible to characterize the natural products encoded by the uncultured majority. the heterologous expression of biosynthetic gene clusters cloned from dna extracted directly from environmental samples ( ... | 2010 | 20577994 |
| e. peter geiduschek. | peter geiduschek was an undergraduate chemistry major at columbia university and received his physical chemistry ph.d. at harvard in 1952 for research under the direction of paul doty. after short stints teaching chemistry at yale and the university of michigan, and an early two-year sabbatical asa us army draftee, he came to the university of chicago's committee on biophysics, where he was first introduced to enzymology and to phage. in 1970, he joined the department of biology of the then rela ... | 2010 | 20853543 |
| journey of a molecular biologist. | my journey into a research career began in fermentation biochemistry in an applied science department during the difficult post-world war ii time in japan. subsequently, my desire to do research in basic science developed. i was fortunate to be a postdoctoral fellow in the united states during the early days of molecular biology. from 1957 to 1960, i worked with three pioneers of molecular biology, sol spiegelman, james watson, and seymour benzer. these experiences helped me develop into a basic ... | 2010 | 21456966 |
| phylogenetic relatedness predicts priority effects in nectar yeast communities. | priority effects, in which the outcome of species interactions depends on the order of their arrival, are a key component of many models of community assembly. yet, much remains unknown about how priority effects vary in strength among species in a community and what factors explain this variation. we experimented with a model natural community in laboratory microcosms that allowed us to quantify the strength of priority effects for most of the yeast species found in the floral nectar of a hummi ... | 2011 | 21775330 |
| effect of an oxygen scavenger on the stability of preservative-free flour tortillas. | along with purge and moisture control, oxygen scavenging is a prominent active packaging technology employed by many food processors. the objective of this study was to determine the effect of an oxygen scavenger system (oss) on the shelf life of preservative-free tortillas stored at varying storage conditions. the shelf life of the tortillas was evaluated at accelerated storage (as; 37 °c, 75% relative humidity [rh]), room temperature (rt; 22 °c, 57% rh), and refrigeration (r; 4 °c, 42% rh) con ... | 2011 | 22133586 |
| flowers as islands: spatial distribution of nectar-inhabiting microfungi among plants of mimulus aurantiacus, a hummingbird-pollinated shrub. | microfungi that inhabit floral nectar offer unique opportunities for the study of microbial distribution and the role that dispersal limitation may play in generating distribution patterns. flowers are well-replicated habitat islands, among which the microbes disperse via pollinators. this metapopulation system allows for investigation of microbial distribution at multiple spatial scales. we examined the distribution of the yeast, metschnikowia reukaufii, and other fungal species found in the fl ... | 2011 | 22080257 |
| Legionella steelei sp. nov. isolated from human respiratory specimens in California and South Australia. | Legionella-like bacteria were isolated from the respiratory tract of two humans in California and South Australia, but not thought to cause disease. These bacteria, strains F2632 and IMVS-3376, were found to have identical Legionella macrophage infectivity potentiator (mip) sequences, and were therefore further characterized to determine their genetic and phenotypic relatedness and properties. Both of these Gram-negative bacterial strains grew on buffered charcoal yeast extract medium, were cyst ... | 2011 | 21948093 |