Freezing tolerance of leaves from 16 Thellungiella accessions before (NA) and after (ACC) 14 days of cold acclimation at 4°C. Freezing tolerance was measured with an electrolyte leakage assay and is expressed as the LT50, i.e. the temperature that resulted in 50% ion leakage from the leaves. All accessions and information on their geographical origins are listed in Table 1. The bars in the top panel represent the means ± SE from five replicate measurements where each replicate comprised leaves from three plants. The accessions are ordered from the lowest LT50 after cold acclimation on the left to the highest on the right. The bottom panel shows the range of LT50 values before and after cold acclimation for 54 Arabidopsis accessions  and the 16 Thellungiella accessions investigated in the present study.
Lee et al. BMC Plant Biology 2012 12:131 doi:10.1186/1471-2229-12-131