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Full-Text Articles in Life Sciences

Citric Acid/Β-Alanine Carbon Dots As A Novel Tool For Delivery Of Plasmid Dna Into E. Coli Cells, Anju Pandey, Asmita Devkota, Anil Sigdel, Zeinab Yadegari, C. Korsi Dumenyo, Ali Taheri Dec 2021

Citric Acid/Β-Alanine Carbon Dots As A Novel Tool For Delivery Of Plasmid Dna Into E. Coli Cells, Anju Pandey, Asmita Devkota, Anil Sigdel, Zeinab Yadegari, C. Korsi Dumenyo, Ali Taheri

Agricultural and Environmental Sciences Faculty Research

Successful delivery of plasmid DNA into the microbial cells is fundamental in recombinant DNA technology. Natural bacterial transformation is limited to only certain species due in part to the repulsive forces between negatively charged DNA and bacterial membranes. Most common method of DNA delivery into bacteria is artificial transformation through heat shock and electroporation. These methods require sophisticated instruments and tedious steps in preparation of competent cells. Transformation by conjugation is also not applicable to all plasmids. Nanoparticles have been used successfully in therapeutics for drug delivery into animal cells. They are starting to gain popularity in plant sciences as …


Effects Of Nitrogen Fertilization And Bioenergy Crop Species On Central Tendency And Spatial Heterogeneity Of Soil Glycosidase Activities, Min Yuan, Jianjun Duan, Jianwei Li, Siyang Jian, Lahiru Gamage, Kudjo E. Dzantor, Dafeng Hui, Philip A. Fay Nov 2020

Effects Of Nitrogen Fertilization And Bioenergy Crop Species On Central Tendency And Spatial Heterogeneity Of Soil Glycosidase Activities, Min Yuan, Jianjun Duan, Jianwei Li, Siyang Jian, Lahiru Gamage, Kudjo E. Dzantor, Dafeng Hui, Philip A. Fay

Agricultural and Environmental Sciences Faculty Research

Extracellular glycosidases in soil, produced by microorganisms, act as major agents for decomposing labile soil organic carbon (e.g., cellulose). Soil extracellular glycosidases are significantly affected by nitrogen (N) fertilization but fertilization effects on spatial distributions of soil glycosidases have not been well addressed. Whether the effects of N fertilization vary with bioenergy crop species also remains unclear. Based on a 3-year fertilization experiment in Middle Tennessee, USA, a total of 288 soil samples in topsoil (0–15 cm) were collected from two 15 m2 plots under three fertilization treatments in switchgrass (SG: Panicum virgatum L.) and gamagrass (GG: Tripsacum dactyloides L.) …


Performance Of A Uv-A Led System For Degradation Of Aflatoxins B1 And M1 In Pure Water: Kinetics And Cytotoxicity Study, Judy Stanley, Ankit Patras, Brahmaiah Pendyala, Matthew J. Vergne, Rishipal R. Bansode Aug 2020

Performance Of A Uv-A Led System For Degradation Of Aflatoxins B1 And M1 In Pure Water: Kinetics And Cytotoxicity Study, Judy Stanley, Ankit Patras, Brahmaiah Pendyala, Matthew J. Vergne, Rishipal R. Bansode

Agricultural and Environmental Sciences Faculty Research

The efficacy of a UV-A light emitting diode system (LED) to reduce the concentrations of aflatoxin B1, aflatoxin M1 (AFB1, AFM1) in pure water was studied. This work investigates and reveals the kinetics and main mechanism(s) responsible for the destruction of aflatoxins in pure water and assesses the cytotoxicity in liver hepatocellular cells. Irradiation experiments were conducted using an LED system operating at 365 nm (monochromatic wave-length). Known concentrations of aflatoxins were spiked in water and irradiated at UV-A doses ranging from 0 to 1,200 mJ/cm2. The concentration of AFB1 and AFM1 was determined by HPLC with fluorescence detection. LC–MS/MS …


The Threat Of Antibiotic Resistance In Changing Climate, Aliyar Cyrus Fouladkhah, Brian Thompson, Janey Smith Camp May 2020

The Threat Of Antibiotic Resistance In Changing Climate, Aliyar Cyrus Fouladkhah, Brian Thompson, Janey Smith Camp

Agricultural and Environmental Sciences Faculty Research

As the earliest form of life, microorganisms have elaborate mechanisms for adapting to changes in environmental conditions.