Figure 6.

Changes in drought and salt stress response in three NAC TF mutant lines.

(A) Assessment of drought and salt tolerance of the NAC TF mutant lines C332, C797, and D47. Photographs of seedlings were taken after 2 weeks of hydroponic growth under normal conditions (CK), drought treatment, and salt treatment.

(B) Quantitative analysis of maximum root length (MRL), seedling length (SL), root dry weight (DW_Root), and leaf dry weight (DW_leaf) in three NAC TF mutant lines under different conditions. The error bars denote ±SD, n = 15. Tukey’s multiple comparisons test was used to determine the significance of trait differences among the four lines (three mutant lines and wild-type KN9204). Different letters indicate a significant difference at P < 0.05.

(C) Water loss rate of isolated leaves under normal conditions. Fresh leaves were isolated from seedlings after hydroponic growth for 2 weeks under normal conditions. The error bars denote ±SD, n = 10. Dunnett’s test was used to determine the differences in water loss rate of three mutant lines compared with the wild type, KN9204. Only differences that reached the significance threshold are labeled (with the color corresponding to the line). ∗P < 0.05; ∗∗P < 0.01.