Fig. 1.

Effect of exposure to cold temperatures on the fatty acid composition of total lipids from soybean leaves. Total lipids were extracted from plant leaves grown at control temperature (24 °C); after plant exposure for 24, 48, and 72h to 5 °C; and after recovery for 4 days at control temperature. Data are expressed as molar percentages obtained from the quantitative analysis of peak area chromatogram. White bars indicate fatty acids from control leaves; light-grey bars from 24h; medium-grey bars from 48h; dark-grey bars from 72h of cold treatment; and black bars following 4 days at control temperatures after cold exposure. Data are mean ± SD from three experiments. For the same fatty acid, different letters indicate significant differences among treatments (P < 0.05).