Fig. 6.

Variations of fluorescence parameters for Klebsormidium sp. (SCHW) during dehydration-rehydration experiment under low light (LL, 25 μmol photons m⁻² s⁻¹) and saturating light for photosynthesis (SL, 185 μmol photons m⁻² s⁻¹). a YII, effective quantum yield during dehydration, with arrows pointing the time differences for the onset of YII decline. b F _o, minimal fluorescence during dehydration. c F _m, maximal fluorescence during dehydration. d Recovery of YII during rehydration (after 24 h of being in a dehydrated state), with arrows indicating the time when YII reaches stable values. Vertical bars indicate standard deviations of three replicates