Fig. 2

The appearance of transgenic VHb Arabidopsis after 14-day waterlogging stress treatment. Fourteen-day old plants grown in the tube were subjected to waterlogged (W) conditions or were untreated under normal (N) conditions for 14 days. a, Plants under 14-days of waterlogging stress or normal conditions. b, Plant development following waterlogging for 14 days and recovery for 14 days. c, Transgenic plants containing the VHb gene or the pBI121 empty vector subjected to waterlogging for 14 days. Plants were transferred from tubes to pots afterwards. d, Leaves of VHb and control plants after 14 days of waterlogging or without the treatment. e, Roots of VHb and control plants after 14 days of waterlogging or without the treatment. Two transgenic VHb lines (#2-2, and 4–4) and two empty vector control lines (#10-1 and 13–6); 20 seedlings for each line were subjected to waterlogging, and the experiment was repeated two times. A total of 60 seedlings for each line were used for waterlogging and another 60 were used as controls under normal conditions. Bar = 1 cm