FIGURE 1
FROM:
Global gene expression of Prochlorococcus ecotypes in response to changes in nitrogen availability
Andrew C Tolonen, John Aach, Debbie Lindell, Zackary I Johnson, Trent Rector, Robert Steen, George M Church & Sallie W Chisholm
doi:10.1038/msb4100087
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Effect of N starvation on culture fluorescence (A, B) and photochemical energy conversion efficiency Fv/Fm (C, D) in Prochlorococcus MED4 (A, C) and MIT9313 (B, D). Days -3, -2, and -1 correspond to culture growth prior to start of experiment. N-replete log-phase cells were spun down and resuspended in N-replete (+NH4, circles) and N-deficient (-N, triangles) media at t=0. The discontinuity in MED4 chlorophyll fluorescence at t=0 resulted from incomplete harvest of the cells before resuspension. Data points are means of replicates. Error bars show the range and are smaller than the symbols when not apparent.
