Table 4.

Viability of the wild-type genetic background and respective mutants after freezing.

Mutant line	% viability mutant	(wild type) % viability wt	p-value
esk1-4	8.82	(Col-0) 1.82	S*
esk1-5	42.11	(Col-0) 10.43	S***
esk1-1	40.69	(Col-0) 6.84	S***
esk1-6	16.76	(WS) 6.52	S**

Plants were acclimated for 7 days at 5°C and then exposed to -8°C for 48H. % of viability was scored as described in the methods. S*: significant with 0.05 > p-value > 0.01; S**: significant with 0.01 > p-value > 0.001; S***: significant with p-value < 0.001.