Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 37 for “"colony morphology"”.
-
Comparison of Escherichia coli virulence factors with colony morphology on various media
Call number: LD2668 .T4 1979 A278
-
Comparison of Escherichia coli virulence factors with colony morphology on various media
Call number: LD2668 .T4 1979 A278
-
The ecology of colonial radiolarians : their colony morphology, trophic interactions and associations, behavior, distribution, and the photosynthesis of their symbionts
… ranged from .04 to 540 colonies per m3. Colony morphology of common genera and species is described and three new shell-less species which reach a length in excess of 1 m are discussed in detail. Some simple behavioral responses are documented, including control of colony buoyancy and …
-
Prevalence of the gene lsr2 among the genus Mycobacterium and an investigation into changes in biofilm formation when inactivating lsr2 regulated genes in Mycobacterium smegmatis
… tuberculosis. M. smegmatis has a rough colony morphology and is capable of forming biofilms, however, when the DNA-regulating protein Lsr2 is inactivated the bacteria forms a smooth colony and loses biofilm formation. This study investigates the phenotypic effect on colony morphology and …
-
Identifying biosynthetic pathways for mycobacterial cell wall components using transposon mutagenesis
… with two different screening criteria, altered colony morphology and mycobacteriophage resistance, was developed. Non-pathogenic Mycobacterium smegmatis and the fish pathogen Mycobacterium marinum were used for generating Tn-mutant libraries. From the colony morphology screen, two out of eight …
-
N₂ fixation by subsurface populations of Trichodesmium : an important source of new nitrogen to the North Atlantic Ocean
… Surface populations were dominated by the raft colony morphology of Trichodesmium and surface N2 fixation rates ranged from (33 to 156 μmol h-1 mol C-1). Subsurface populations were dominated by the puff colony morphology. Subsurface N2 fixation was typically detectable, but consistently lower …
-
Structure and Function of the Yeast Chromosomal Replicator Ars1 (Plasmid)
… the parameters of high-frequency transformation, colony morphology, copy number, and stability in both high- and low-copy plasmids. The mutagenesis was in the form of insertions (10-4200 base pairs) and deletions. My results indicate that the consensus sequence found in all ARS elements is …
-
N2 fixation by subsurface populations of Trichodesmium : an important source of new nitrogen to the North Atlantic Ocean
… Surface populations were dominated by the raft colony morphology of Trichodesmium and surface N2 fixation rates ranged from (33 to 156 μmol h-1 mol C-1). Subsurface populations were dominated by the puff colony morphology. Subsurface N2 fixation was typically detectable, but consistently lower …
-
Functional Studies of Penicillin-binding Protein 1 in Bacillus subtilis
… complement the wild type gene. We examined the colony and cell morphologies, and PBP1 localization in the mutant strains. The removal of the cytoplasmic region of the PBP1 S domain and the replacement of PBP1 S domain by PBP4 S domain did not change the colony morphologies, and each of these two …
-
Assessing bacteriological quality of fresh black soldier fly larvae.
… isolated from BSFL were identified using colony morphology, Gram staining, Catalase test, Mannitol Salt Agar for Staphylococcus and Eosin Methylene Blue for E. coli, and the isolates obtained were selected based on their characteristics. E. coli and Staphylococcus were subjected to …
-
Assessing bacteriological quality of fresh black soldier fly larvae.
… isolated from BSFL were identified using colony morphology, Gram staining, Catalase test, Mannitol Salt Agar for Staphylococcus and Eosin Methylene Blue for E. coli, and the isolates obtained were selected based on their characteristics. E. coli and Staphylococcus were subjected to …
-
GEOTRICHUM GALACTOMYCETUM: INTRASPECIFIC PHYSIOLOGICAL DIVERSITY AND BIOTECHNOLOGICAL POTENTIAL OF SIX STRAINS ISOLATED FROM POULTRY MANURE
… poultry waste. Data will be presented regarding colony morphology, reproductive structures, temperature tolerance, and metabolic activity related to the usage of carbon and nitrogen, response to osmotic and ionic stress, and activity of various enzymes exhibited on different media. Five …
-
IN VITRO ΑΝΑΠΤΥΞΗ ΑΝΤΟΧΗΣ ΠΡΟΤΥΠΟΥ ΣΤΕΛΕΧΟΥΣ PSEUDOMONAS AERUGINOSA ΣΤΟ ΙΜΙΡΕΝΕΜ ΚΑΙ ΙΔΙΟΤΗΤΕΣ ΑΥΤΟΥ
… RESISTANCE TO IMIPENEN AFFECTED GROWTH RATE, COLONY MORPHOLOGY, PIGMENT PRODUCTION, GROWTH OF 42 C AND GLUCOSE OXIDATION. BETA-LACTAMASE ASSAYS SHOWED THATTHE MOST LIKELY REASON FOR THE RESISTANCE WAS THE EXISTENCE OF AN INCREASE PERMEABILITY BARRIER WHOSE MECHANISM WAS CHIEFLY BASED UPON …
-
Phenotypic characterization of rhizobia isolates and distribution of Burkholderia rhizobia in the Core Cape Subregion
… Isolates were phenotypically characterized for colony morphology, growth temperature, carbon source, salinity and pH tolerance. Morphological results revealed that majority of the tested isolates were white opaque, rod shaped and fast growing. Exceptions were found in colour where five strains …
-
Investigating Rhizobium Leguminosarum Metabolism and Rhizosphere Colonization Using High-Throughput Genomics and Erythritol Enrichments
… were enriched on general and erythritol media. Colony morphology assays and high throughput sequencing of the microbial communities reveal that erythritol metabolism is strongly correlated with nodulating Rhizobia strains on the roots of pea plants. High throughput analyses were also employed to …
-
Phenotypic variation in Photorhabdus temperata K122
… enzymes, antibiotics and displays a different colony morphology to the primary variant. Study of the phenotypic switch undergone by Photorhabdus has identified two signalling pathways which play a role in the regulation of phenotypic variation - the LysR-type transcriptional regulator HexA and …
-
The Utilization of Low-grade Carbohydrates
… from other continuous fermentation systems. The morphology of the mould both governed and was governed by fermenter conditions such as the oxygen transfer rate. The concentration of mould in the fermenter was determined largely by a balance of the fluidisation and sedimentation forces acting on …
-
Control of cell fate decisions of embryonic stem cells by mechanical forces
… turn generates low cell-matrix tractions and low colony stiffness correlating well with compact and round colony morphology, expressed high levels of OCT3/4, NANOG, and the Alkaline Phosphatase activity, even in the absence of Leukemia Inhibitory Factor (LIF). The mESCs on the soft substrates …
-
The morphology, ecology and fungicidal tolerance of Botrytis cinerea isolates
… from sensitive isolates on the basis of colony morphology. Examination of 188 isolates of B. cinerea collected from 10 different tomato crops showed that sensitive isolates tended to be more pathogenic to detached tomato cotyledons and grew faster in vitro than tolerant isolates. In vitro …
-
Implementation of genetic and untargeted metabolomics to study the role of the terpene synthase vir4 from Trichoderma virens in plant-microbe interactions : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… terpenes as signalling mediators of the inter-colony communication and modulators of the plant-symbiont crosstalk. In this study, the process by which T. virens volatile terpenes modulate fungal development was examined by the generation of a terpene synthase (vir4) deletion mutant and its …
Page 1 of 2