Fig 3.

The survival of host-associated Bacteroidales cells measured by PMA-PCR and the persistence of DNA including intact/dead cells and extracellular DNA under natural sunlight exposure in freshwater. Open and closed circles represent intact cells and total DNA, respectively. The dotted line of DNA and the dashed line were plotted using a simple first-order decay model and a biphasic model, respectively, as shown in Table 1.