Fig. 5.

Transmission electron micrographs of Klebsormidium crenulatum (SAG 2415), a desiccated at 95 % air relative humidity for 4 days, b desiccated at 5 % air relative humidity for 4 days, c, d plasmolysed with 1,000 mM sorbitol for 3 h. The general appearance of the cytoplasm is similarly dense regardless of the different treatments, except that in desiccated samples the cross walls appear undulated (a). oCW outer cell wall, cCW cross cell wall, Chl chloroplast, M mitochondrion, N nucleus, P peroxisome, S starch, V vacuole. Bars 1 μm. a, b reprinted from Holzinger et al. (2011) with permission of the Phycological Society of America; c, d reprinted from Kaplan et al. (2012) with permission of Springer Science and Business Media