Research Topics
| Klaus NussleinSummaryAffiliation: University of Massachusetts Country: USA Publications
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Detail Information
Publications
Desiccation induces viable but Non-Culturable cells in Sinorhizobium meliloti 1021Jan Ac Vriezen
Department of Microbiology, University of Massachusetts, Amherst, Massachusetts, USA, MA 01003
AMB Express 2:6. 2012..This observation has important consequences for the use of rhizobia. Finding methods to resuscitate this fraction may increase the quality of powder-based seed inocula...
Broad-spectrum antibacterial activity by a novel abiogenic peptide mimicKlaus Nusslein
Department of Microbiology, University of Massachusetts, Amherst, 01003, USA
Microbiology 152:1913-8. 2006....
Investigating the effect of increasing charge density on the hemolytic activity of synthetic antimicrobial polymersZoha M Al-Badri
Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
Biomacromolecules 9:2805-10. 2008..To understand the membrane activity of these polymers, we conducted dye leakage experiments on lipid vesicles that mimic bacteria and red blood cell membranes, and these results showed a strong correlation with the hemolysis data...
Antimicrobial polymers prepared by ring-opening metathesis polymerization: manipulating antimicrobial properties by organic counterion and charge density variationKaren Lienkamp
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003, USA
Chemistry 15:11715-22. 2009..A SMAMP with an MIC90 of 4 microg mL(-1) against Staphylococcus aureus and a selectivity (=HC50/MIC90) of 650 was discovered, the most selective SMAMP to date...
Synthetic mimic of antimicrobial peptide with nonmembrane-disrupting antibacterial propertiesGregory J Gabriel
Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, USA
Biomacromolecules 9:2980-3. 2008..The unique biological properties of PGON, in same ways similar to cell-penetrating peptides, strongly encourage the examination of other novel guanidino containing macromolecules as powerful and selective antimicrobial agents...
"Doubly selective" antimicrobial polymers: how do they differentiate between bacteria?Karen Lienkamp
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003, USA
Chemistry 15:11710-4. 2009..aureus bacteria, the 50000 g mol(-1) SMAMP got stuck and consequently did not have antimicrobial activity...
Using flow to switch the valency of bacterial capture on engineered surfaces containing immobilized nanoparticlesBing Fang
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
Langmuir 28:7803-10. 2012..These finding suggest the use of surface elements to manipulate individual bacteria and nonfouling designs with precise but finite bacterial interactions...
Hydrophilic modifications of an amphiphilic polynorbornene and the effects on its hemolytic and antibacterial activitySemra Colak
Department of Polymer Science and Engineering, University of Massachusetts Amherst, 120 Governors Drive, Amherst, Massachusetts 01003, USA
Biomacromolecules 10:353-9. 2009..08 to 1.15 were obtained. The effects of these modifications on the biological activity of these polymers were analyzed by determining their minimum inhibitory concentrations (MIC) and their hemolytic activities (HC50)...
Bacterial adhesion on hybrid cationic nanoparticle-polymer brush surfaces: ionic strength tunes capture from monovalent to multivalent bindingBing Fang
Department of Polymer Science and Engineering, University of Massachusetts at Amherst, Amherst, MA 01003, USA
Colloids Surf B Biointerfaces 87:109-15. 2011..Thus brushy relaxations increase biocompatibility...
Comparison of facially amphiphilic versus segregated monomers in the design of antibacterial copolymersGregory J Gabriel
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003, USA
Chemistry 15:433-9. 2009..We advocate the use of FA monomers for better control of biological properties. It is expected that this principle will be usefully applied to other backbones such as the polyacrylates, polystyrenes, and non-natural polyamides...
Fast disinfecting antimicrobial surfacesAhmad E Madkour
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
Langmuir 25:1060-7. 2009..Antimicrobial studies showed that the killing efficiency of these surfaces was independent of polymer layer thickness or grafting density within the range of surfaces studied...
New bactericidal surgical suture coatingYan Li
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, United States
Langmuir 28:12134-9. 2012..The PAMBM-containing sutures killed bacteria more effectively (3 log(10) reduction at 2.4 wt %) than Vicryl Plus sutures (0.5 log(10) reduction)...
Shifts in rhizoplane communities of aquatic plants after cadmium exposureLisa M Stout
Department of Microbiology, University of Massachusetts, Amherst, MA 01003 9298, USA
Appl Environ Microbiol 71:2484-92. 2005..This study is a first step in understanding the role of aquatic plant-associated microbial communities in phytoremediation of heavy metals...
Arsenic sequestration by nitrate respiring microbial communities in urban lake sedimentsBrian P Gibney
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Chemosphere 70:329-36. 2007....
Salinity constraints on subsurface archaeal diversity and methanogenesis in sedimentary rock rich in organic matterPatricia J Waldron
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Appl Environ Microbiol 73:4171-9. 2007....
Comparative bacterial diversity in recent Hawaiian volcanic deposits of different agesVicente Gomez Alvarez
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
FEMS Microbiol Ecol 60:60-73. 2007..This study not only showed that microorganisms colonize recent volcanic deposits and are able to establish diverse communities, but also that their composition is governed by variations in local deposit parameters...
Distribution of extensive nifH gene diversity across physical soil microenvironmentsJavier A Izquierdo
Department of Microbiology, University of Massachusetts, Amherst, MA, USA
Microb Ecol 51:441-52. 2006..This study not only provides new knowledge of the arrangement of diazotrophic communities at the soil microscale, but it also contributes to the underrepresented knowledge of soil nifH sequences in the public databases...
The role of nano-scale heterogeneous electrostatic interactions in initial bacterial adhesion from flow: a case study with Staphylococcus aureusSurachate Kalasin
Department of Physics, University of Massachusetts, Amherst, MA 01003, United States
Colloids Surf B Biointerfaces 76:489-95. 2010..The study further revealed a hydrodynamic crossover from a regime where flow aids bacterial adhesion to one where flow impedes adhesion. An explanation is put forth in terms of the relative hydrodynamic and surface forces...
Molecular approach to evaluate biostimulation of 1,2-dibromoethane in contaminated groundwaterKyunghwa Baek
Department of Microbiology, University of Massachusetts, Amherst, MA 01003, USA
Bioresour Technol 123:207-13. 2012..This is also reflected in the history of the plume, which originated from an aviation gasoline pipeline leak. This study suggests that biostimulation of EDB is possible at aerobic groundwater sites...
Antimicrobial polymers prepared by ROMP with unprecedented selectivity: a molecular construction kit approachKaren Lienkamp
Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
J Am Chem Soc 130:9836-43. 2008..This kind of "double selectivity" (bacteria over mammalian and one bacterial type over another) is unprecedented in other polymer systems and is attributed to the monomer's facial amphiphilicity...
Phytoprotective influence of bacteria on growth and cadmium accumulation in the aquatic plant Lemna minorLisa M Stout
Department of Microbiology, University of Massachusetts, Amherst, MA 01003 9298, USA
Water Res 44:4970-9. 2010..This suggests that bacteria serve a phytoprotective role in their relationship with Lemna minor, preventing toxic cadmium from entering plants...
