Figure 4.

Transgenic PeGSTU58 Arabidopsis seedling resistance to salt and drought stress in soil. (A) PeGSTU58-overexpression and the WT seedlings were cultivated under normal growth conditions for two weeks in soil. Water was withheld for 10 days. This was followed by a rehydration period to examine the plants’ ability to withstand drought stress. For salt treatment, 30 mL of 200 mM NaCl was irrigated to the seedlings every 3 days for 3 weeks. Photographs were taken after each course of treatment. (B,C) The relative water content (RWC) and relative electrical conductivity (REC) of WT and the PeGSTU58-overexpression seedlings under control, salt, and drought stress was measured. The values presented herein result from an average calculation based on three separate replicates. Significance test was conducted using Student’s t-test (** p < 0.01).