Fig. S6.

Growth rates and virus production of susceptible and resistant algal clones. (A) Growth rates (±two SDs of four technical replicates) of three susceptible (gray) and resistant algal clones (blue) in the absence (−) and presence (+) of contemporary virus populations (see Time-Shift Experiments for details). (B) Virus concentrations at the end of the time shift experiment (72 h) and the initial virus concentration that was used to start the time-shift experiments (light blue). The number of virus particles increased when virus was exposed to susceptible algal clones (gray, clones a–c; Wilcoxon rank sum test: W = 63.5; P value = 0.03704). The number of virus particles decreased significantly when virus was exposed to resistant clones (blue, clones d–f; Wilcoxon rank sum test: W = 0; P value = 0.005099) presumably as a result of adsorption of virus to the algal host without successful infections. Horizontal lines represent mean, points technical replicates.