https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Phenotypic variants of staphylococci and their underlying population distributions following exposure to stress https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:15038 = 300) were assessed via scanning and transmission electron microscopy (SEM and TEM), and compared to control populations. Our analyses found that prolonged exposure to all treatments resulted in the subsequent formation of SCV phenotypes. Observed SCVs manifested as minute colonies with reduced haemolysis and pigmentation (NaCl, pH and 4 degrees C treatments), or complete lack thereof (antibiotic treatments). SEM comparison analyses revealed significantly smaller cell sizes for SCV populations except in S. aureus and S. epidermidis 10% NaCl, and S. epidermidis 4 degrees C (p<0.05). Shifts in population distribution patterns were also observed with distinct sub-populations of smaller cells appearing for S. epidermidis, and S. lugdunensis. TEM analyses revealed significantly thicker cell-walls in all treatments and species except S. lugdunensis exposed to 4 degrees C. These findings suggest that staphylococci adapted to environmental stresses by altering their cell size and wall thickness which could represent the formation of altered phenotypes which facilitate survival under harsh conditions. The phenotypic response was governed by the type of prevailing environmental stress regime leading to appropriate alterations in ultra-structure and size, suggesting downstream changes in gene expression, the proteome, and metabolome.]]> Wed 11 Apr 2018 16:44:34 AEST ]]> Effect of low temperature on growth and ultra-structure of staphylococcus spp https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:15131 Wed 11 Apr 2018 12:21:29 AEST ]]> Filterability of staphylococcal species through membrane filters following application of stressors https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:17107 Thu 07 Feb 2019 14:51:25 AEDT ]]> Small colony variants of staphylococci: pathogenesis and evolutionary significance in causing and sustaining problematic human infections https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:4718 Sat 24 Mar 2018 07:21:51 AEDT ]]>