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Browsing by Author "Cowan, DA"

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Evidence of novel plant-species specific ammonia oxidizing bacterial clades in acidic South African fynbos soils

Author: Ramond, JB ; Lako, JDW ; Stafford, William HL ; Tuffin, MI ; Cowan, DA Date: Feb 2015 Ammonia-oxidizing bacteria (AOB) are essential in the biogeochemical cycling of nitrogen as they catalyze the rate-limiting oxidation of ammonia into nitrite. Since their first isolation in the late 19th century, chemolithoautotrophic AOBs ... Read more
Genotoxicity of metal based engineered nanoparticles in aquatic organisms: A review

Author: Mahaye, Ntombikayise ; Thwala, Melusi ; Cowan, DA ; Musee, Eunice Date: Jul 2017 Engineered nanoparticles (ENPs) are an emerging class of environmental contaminants, but are generally found in very low concentrations and are therefore likely to exert sub-lethal effects on aquatic organisms. In this review, we: (i) highlight ... Read more
Molecular characterization of a novel family VIII esterase from burkholderia multivorans UWC10

Author: Rashamuse, KJ ; Burton, SG ; Stanfford, WHL ; Cowan, DA Date: Feb 2007 An esterase producing Burkholderia multivorans UWC10 strain was isolated by culture enrichment. A shotgun library of B. multivorans UWC10 genomic DNA was screened for esterase activity and a recombinant clone conferring an esterolytic phenotype ... Read more
Novel recombinant ethyl ferulate esterase from Burkholderia multivorans

Author: Rashamuse, KJ ; Burton, SG ; Cowan, DA Date: Nov 2007 Isolation and identification of bacterial isolates with specific ferulic acid (FA) esterase activity and cloning of a gene encoding activity. A micro-organism with ethyl ferulate hydrolysing (EFH) activity was isolated by culture enrichment ... Read more
The soil and plant determinants of community structures of the dominant actinobacteria in Marion Island terrestrial habitats, Sub-Antarctica

Author: Sanyika, TW ; Stafford, William HL ; Cowan, DA Date: Aug 2012 Marion Island is a Sub-Antarctic island made up of distinct ecological habitats based on soil physiochemical, plant cover and physical characteristics. The microbial diversity and ecological determinants in this harsh Sub-Antarctic environment ... Read more
Structural and biochemical characterization of a nitrilase from the thermophilic bacterium, Geobacillus pallidus RAPc8

Author: Williamson, DS ; Dent, KC ; Weber, BW ; Varsani, A ; Frederick, J ; Cameron, RA ; Van Heerden, JH ; Cowan, DA ; Sewell, BT Date: Sep 2010 Geobacillus pallidus RAPc8 (NRRL: B-59396) is a moderately thermophilic gram-positive bacterium, originally isolated from Australian lake sediment. The G. pallidus RAPc8 gene expressing an inducible nitrilase was located and cloned using ... Read more

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Browsing by Author "Cowan, DA"

Browsing by Author "Cowan, DA"

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