| Comments |
P.1497 left column: "Doubling Time, Pigment Content, and Maximal PSII Quantum Efficiency: The cell division time of C. reinhardtii depends on carbon source and light intensity (Table I). For Mnl [mixotrophic with normal light] and CO2nl [CO2 with normal light] cells, [investigators] observed a 9-h cell doubling time, in agreement with the literature (Harris, 2008). Pnl [photoautotrophic with normal light] and Phl [photoautotrophic with high light] cells divided around once per day, which is similar to a previous report as well (Bonente et al., 2012), while CO2hl [CO2 with high light] cells divided every 5 h. In summary, cell doubling time is faster in high light, especially in CO2hl, where growth is sustained by higher carbon fixation rate in the presence of elevated CO2 levels. In Table I, the Fv/Fm [Maximal quantum efficiency of PSII] is reported. The highest values in this condition were observed for CO2nl and CO2hl cells, while a lower value for Phl cells suggests an overall higher stress." |