The Role of Hydrogen Peroxide in Environmental Adaptation of Oral Microbial Communities

<table>Oral streptococcal antagonism assay with <i>S. sanguinis</i>, <i>S. gordonii,</i> and <i>S. mutans</i>. The lower row in the plate dual-species antagonism assay were inoculated first (indicated by an arrow) and allowed to grow for 16 h. Subsequently, the to be tested species was inoculated in close proximity. Diffusible <svg height="15.5125" id="M78" style="vertical-align:-3.276pt" version="1.1" viewbox="0 0 38.512501 15.5125" width="38.512501" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.363)"><use xlink:href="#x48"></use></g>
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</svg> produced by <i>S. sanguinis</i> (Ss) and <i>S. gordonii</i> (Sg) during growth caused inhibition of <i>S. mutans</i> (Sm), while no obvious growth inhibition was observed when <i>S. sanguinis</i> or <i>S. gordonii</i> was tested against themselves or against each other.</table>

Oxidative Medicine and Cellular Longevity

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Figure 2

Figure 2: The Role of Hydrogen Peroxide in Environmental Adaptation of Oral Microbial Communities 