Figure 2. sos6-1 plants are hypersensitive to general osmotic stress.
(a) Growth of wild type and sos6-1 plants in the presence of 0 or 100 mM mannitol for 21 days. The seeds were first germinated on media containing 0 mM mannitol and then transferred to media containing 0 or 100 mM mannitol. (b) Quantification of growth (at the end of day 21; indicated by fresh weight) of wild type and sos6-1 in response to different levels of mannitol. (c) Seed germination and seedling development of wild-type and sos6-1 plants in media with low ψW imposed by PEG for 21 days. Seeds were directly germinated in agar plates with low ψW. (d) Quantification of growth of wild type and sos6-1 as shown in (c). Error bars in (b) and (d) indicate standard deviation (n = 60–80).