209 results match your criteria: "1815 N University St[Affiliation]"
Carbohydr Polym
November 2022
U.S. Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, Functional Food Research Unit, 1815 N. University St., Peoria, IL 61604, USA.
A series of dicarboxylic-amylose inclusion complexes (AIC) were prepared by excess steam jet-cooking high amylose corn starch with linear C10, C12, C14, and C16 dicarboxylic acids to examine the influence of two polar head groups on complex formation. The C12, C14, and C16 dicarboxylic acid AIC were prepared in 48-63 % yields and contained 8.9-11.
View Article and Find Full Text PDFPathogens
July 2022
Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Private Bag X20, Pretoria 0028, South Africa.
The species complex (FFSC) includes socioeconomically important pathogens that cause disease for numerous crops and synthesize a variety of secondary metabolites that can contaminate feedstocks and food. Here, we used comparative genomics to elucidate processes underlying the ability of pine-associated and grass-associated FFSC species to colonize tissues of their respective plant hosts. We characterized the identity, possible functions, evolutionary origins, and chromosomal positions of the host-range-associated genes encoded by the two groups of fungi.
View Article and Find Full Text PDFProbiotics Antimicrob Proteins
December 2022
Agricultural Research Service, Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, USDA, 1815 N University St, Peoria, IL, 61604, USA.
Milk kefir fermentation has been used in households for generations. Consumption of milk kefir has been associated with various health benefits, presumably from the probiotics of yeast and bacteria that make up the kefir grains. In addition, many of the microbes are known to produce novel antimicrobial compounds that can be used for other applications.
View Article and Find Full Text PDFMycologia
July 2022
Biodiversity (Mycology & Botany), Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, ON K1A 0C6, Ottawa, Ontario, Canada.
This study was conducted to elucidate evolutionary relationships and species diversity within the species complex (FBSC). We also evaluate the potential of these species to produce mycotoxins and other bioactive secondary metabolites. Maximum likelihood and maximum parsimony analyses of sequences from portions of four marker loci (ITS rDNA, , and ) and the combined 4495 bp data set support recognition of seven genealogically exclusive species within the FBSC.
View Article and Find Full Text PDFFungal Genet Biol
May 2022
USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Unit, 1815 N. University St., Peoria, IL 61604, USA.
Int J Food Microbiol
June 2022
Henan Key Laboratory of Cereal and Oil Food Safety Inspection and Control, Henan University of Technology, Zhengzhou 450001, China.
Natural food flavour (E)-2-hexenal, a green leaf volatile, exhibits potent antifungal activity on Aspergillus flavus, but its antifungal mechanism has not been fully elucidated. In this study, we evaluated (E)-2-hexenal-induced apoptosis in A. flavus conidia and explored the underlying mechanisms of action.
View Article and Find Full Text PDFJ Econ Entomol
April 2022
USDA-ARS, SE Fruit and Tree Nut Research Unit, 21 Dunbar Road, Byron, GA 31008, USA.
A newly discovered entomopathogenic fungus Cordyceps javanica (Friedrichs & Bally) Samson & Hywel-Jones (Hypocreales: Cordycipitaceae) strain Wf GA17 was compared with the commercial Cordyceps fumosorosea Wize (Hypocreales: Cordycipitaceae) Apopka 97 strain for liquid-culture production, formulation, insecticidal efficacy, and storage stability under laboratory conditions. We compared culture media with carbon:nitrogen (C:N) ratios of 10:1, 30:1, and 50:1 for these two isolates. A third strain, C.
View Article and Find Full Text PDFExp Appl Acarol
February 2022
US Department of Agriculture, Agricultural Research Service, Cropping Systems Research Laboratory, 3810 Fourth St., Lubbock, TX, 79415, USA.
The repellency and toxicity of a CO-derived cedarwood oil (CWO) was evaluated against actively questing unfed nymphs of four species of hard ticks: Amblyomma americanum (L.), Dermacentor variabilis (Say), Ixodes scapularis Say, and Rhipicephalus sanguineus (Latreille). Using a vertical climb bioassay for repellency, nymphs of these species avoided a CWO-treated filter paper in proportional responses to treatment concentrations.
View Article and Find Full Text PDFToxins (Basel)
November 2021
Morden Research and Development Centre, Agriculture and Agri-Food Canada, Morden, MB R6M 1Y5, Canada.
Ergot fungi ( spp.) are infamous for producing sclerotia containing a wide spectrum of ergot alkaloids (EA) toxic to humans and animals, making them nefarious villains in the agricultural and food industries, but also treasures for pharmaceuticals. In addition to three classes of EAs, several species also produce paspaline-derived indole diterpenes (IDT) that cause ataxia and staggers in livestock.
View Article and Find Full Text PDFMicrob Ecol
July 2022
Department of Plant and Microbial Biology, North Carolina State University, 112 Derieux Place, Raleigh, NC, 27607, USA.
Microbial communities, like their macro-organismal counterparts, assemble from multiple source populations and by processes acting at multiple spatial scales. However, the relative importance of different sources to the plant microbiome and the spatial scale at which assembly occurs remains debated. In this study, we analyzed how source contributions to the foliar fungal microbiome of a C4 grass differed between locally abundant plants and soils across an abiotic gradient at different spatial scales.
View Article and Find Full Text PDFSci Rep
July 2021
Florida Medical Entomology Laboratory, University of Florida, Vero Beach, FL, 32962, USA.
Insecticide resistance has emerged as a persistent threat to the fight against vector-borne diseases. We compared the gut microbiota of permethrin-selected (PS) strain of Aedes aegypti relative to the parent (KW) strain from Key West, Florida. Bacterial richness but not diversity was significantly higher in PS strain compared to KW strain.
View Article and Find Full Text PDFCarbohydr Polym
July 2021
Novel Materials and Nanotechnology Group, Institute of Agrochemistry and Food Technology (IATA), Spanish Council for Scientific Research (CSIC), Calle Catedrático Agustín Escardino Benlloch 7, 46980, Paterna, Spain. Electronic address:
This study focuses on the production and characterization of electrosprayed cashew gum (CG) microparticles that encapsulate β-carotene. CG is an inexpensive, non-toxic polysaccharide obtained from Anacardium occidentale trees. Encapsulation of β-carotene in CG was performed by electrospraying from two emulsion formulations (water : oil ratios 80:20 and 90:10 (v/v)) in which the dispersed phase consisted of β-carotene dissolved in castor oil, and the continuous phase was a CG aqueous solution.
View Article and Find Full Text PDFSci Rep
April 2021
Crop Bioprotection Research Unit, U.S. Department of Agriculture, Agricultural Research Service, 1815 N. University St., Peoria, IL, 61604, USA.
Mosquito bacterial communities are essential in mosquito biology, and knowing the factors shaping these bacterial communities is critical to their application in mosquito-borne disease control. This study investigated how the larval environment influences the bacterial communities of larval stages of two container-dwelling mosquito species, Aedes triseriatus, and Aedes japonicus. Larval and water samples were collected from tree holes and used tires at two study sites, and their bacteria characterized through MiSeq sequencing of the 16S rRNA gene.
View Article and Find Full Text PDFMicrob Biotechnol
February 2022
Mycotoxin Prevention and Applied Microbiology Research Unit, National Center for Agricultural Utilization Research, United States Department of Agriculture, Agricultural Research Service, 1815 N University St, Peoria, IL, 61604, USA.
Fusarium graminearum is the primary cause of Fusarium head blight (FHB), one of the most economically important diseases of wheat worldwide. FHB reduces yield and contaminates grain with the trichothecene mycotoxin deoxynivalenol (DON), which poses a risk to plant, human and animal health. The first committed step in trichothecene biosynthesis is formation of trichodiene (TD).
View Article and Find Full Text PDFParasit Vectors
January 2021
Department of Evolution, Ecology and Behavior, School of Integrative Biology, University of Illinois at Urbana-Champaign, 505 S. Goodwin Ave, Urbana, 61801, IL, USA.
Background: The guts of blood-sucking insects host a community of bacteria that can shift dramatically in response to biotic and abiotic factors. Identifying the key factors structuring these microbial communities has important ecological and epidemiological implications.
Methods: We used the yellow fever mosquito, Aedes aegypti, to investigate the impact of mixed blood meals on gut microbiota of vector mosquitoes.
ACS Chem Biol
January 2021
Cayman Chemical, 1180 E. Ellsworth Rd., Ann Arbor, Michigan 48108, United States.
Branched-chain fatty acids (BCFA) are encountered in Gram-positive bacteria, but less so in other organisms. The bacterial BCFA in membranes are typically saturated, with both odd- and even-numbered carbon chain lengths, and with methyl branches at either the ω-1 () or ω-2 () positions. The acylation with BCFA also contributes to the structural diversity of microbial natural products and potentially modulates biological activity.
View Article and Find Full Text PDFAntonie Van Leeuwenhoek
January 2021
Crop Bioprotection Research, USDA Agricultural Research Service, 1815 N. University St., Peoria, IL, 61604, USA.
A Gram-stain positive, aerobic, motile, rod-shaped bacterium designated as strain CBP-2801 was isolated as a contaminant from a culture containing maize callus in Peoria, Illinois, United States. The strain is unique relative to other Cohnella species due to its slow growth and reduced number of sole carbon sources. Phylogenetic analysis using 16S rRNA indicated that strain CBP-2801 is a Cohnella bacterium and showed the highest similarity to Cohnella xylanilytica (96.
View Article and Find Full Text PDFMethods Protoc
December 2020
USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Renewable Product Technology Research Unit, 1815 N. University St., Peoria, IL 61604, USA.
Predictive models were developed using two-dimensional quantitative structure activity relationship (QSAR) methods coupled with B3LYP/6-311+G** density functional theory modeling that describe the antimicrobial properties of twenty-four triazolothiadiazine compounds against , and sp., as well as the bacteria , , , and . B3LYP/6-311+G** density functional theory calculations indicated the triazolothiadiazine derivatives possess only modest variation between the frontier orbital properties.
View Article and Find Full Text PDFWorld J Microbiol Biotechnol
November 2020
Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University St., Peoria, IL, 61604, USA.
We previously identified specific proteins associated with ethanol stress response in a Lactobacillus buchneri strain capable of growing in 10% ethanol. In the current study, the exceptional roles of ethanol responsive genes are examined to determine if they can increase ethanol tolerance in E. coli host cells.
View Article and Find Full Text PDFParasit Vectors
October 2020
Illinois Natural History Survey, University of Illinois at Urbana-Champaign, 1816 S. Oak St, Champaign, IL, 61820, USA.
Background: The bacterial communities associated with mosquito eggs are an essential component of the mosquito microbiota, yet there are few studies characterizing and comparing the microbiota of mosquito eggs to other host tissues.
Methods: We sampled gravid female Culex pipiens L. and Culex restuans Theobald from the field, allowed them to oviposit in the laboratory, and characterized the bacterial communities associated with their egg rafts and midguts for comparison through MiSeq sequencing of the 16S rRNA gene.
Insects
October 2020
USDA-ARS, Southeastern Fruit and Tree Nut Research Laboratory, 21 Dunbar Road, Byron, GA 31008, USA.
A new strain of (wf GA17) was observed causing widespread epizootics among whiteflies in Southern Georgia in 2017. The tolerance of conidia to environmental factors including variable temperature and ultraviolet (UV) light was compared between this strain and three commercial strains of entomopathogenic fungi ( F52, Apopka97, and GHA). Under 10-30 °C, wf GA17 responded similarly to other fungi, with the highest virulence against at 25 °C, followed by 20, 30, and 15 °C; lowest virulence was observed at 10 °C.
View Article and Find Full Text PDFAntonie Van Leeuwenhoek
November 2020
Research Laboratory of Environmental Sciences and Sustainable Development "LASED", LR17ES32, University of Sfax, Sfax, Tunisia.
The current study focuses on the tolerance of a strain of Halobacterium salinarum isolated from Sfax solar saltern (Tunisia) towards cadmium (Cd), lead (Pb), nickel (Ni), zinc (Zn), and copper (Cu) by using agar dilution methods in complex and minimal media. The results showed the least inhibitory metals based on Minimum Inhibitory Concentrations (MICs) were lead (MIC = 4.5 mM), cadmium (MIC = 4 mM), and nickel (MIC = 2.
View Article and Find Full Text PDFFEMS Microbiol Ecol
July 2020
Department of Evolution, Ecology and Behavior, School of Integrative Biology, University of Illinois at Urbana-Champaign, 505 S. Goodwin Ave., Urbana, IL 61801, USA.
We examined how larvae of Culex restuans mosquito influences the bacterial abundance, composition and diversity in simulated container aquatic habitats. The microbiota of Cx. restuans larvae were also characterized and compared to those of their larval habitats.
View Article and Find Full Text PDFSci Rep
June 2020
Crop Bioprotection Research Unit, Agricultural Research Service, U.S. Department of Agriculture, 1815 N. University St., Peoria, IL, 61604, USA.
Pesticides commonly contaminate the aquatic environments inhabited by mosquito juveniles. However, their role in shaping the mosquito microbiota is not well understood. We hypothesized that environmentally relevant concentrations of atrazine, permethrin and malathion will mediate a shift in the mosquito gut bacterial community structure due to their toxic effect on the aquatic bacterial communities, and reduce mosquito gut bacterial diversity by enriching pesticide-degrading bacterial communities over susceptible taxa.
View Article and Find Full Text PDFJ Chem Ecol
June 2020
USDA Forest Service, Northern Research Station, 3101 Technology Blvd., Ste. F, Lansing, MI, 48910, USA.
The Asian eulophid wasp Tetrastichus planipennisi is being released in North America as a biocontrol agent for the emerald ash borer (Agrilus planipennis), a very destructive invasive buprestid beetle that is devastating ash trees (Fraxinus spp.). We identified, synthesized, and tested a female-produced sex pheromone for the wasp.
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