Figure 6 Overexpression of PtrWRKY75 enhanced drought
tolerance under long-term drought conditions.
(A) Morphological differences between wild-type (WT) andPtrWRKY75 -overexpressing (OE) lines in long-term drought
experiments. Scale bars = 10 cm. Data are means ± SE (n = 6).
(B) Leaf relative water content under different water conditions. Data
are means ± SE (n = 6). Data were analyzed using one-way analysis
of variance followed by Duncan’s multiple range test. Asterisks denote
significant differences: **P < 0.01.
(C) Photosynthetic rate. Data are means ± SE (n = 6). Data were
analyzed using one-way analysis of variance followed by Duncan’s
multiple range test. Asterisks denote significant differences:
**P < 0.01.
(D) Whole plant biomass. Data are means ± SE (n = 6). Data were
analyzed using one-way analysis of variance followed by Duncan’s
multiple range test. Asterisks denote significant differences:
**P < 0.01.
(E) Stem elongation rate of WT and OE lines under 70% soil RWC and 20%
soil RWC. Data are means ± SE (n = 6). Data were analyzed using
one-way analysis of variance followed by Duncan’s multiple range test.
Asterisks denote significant differences: **P < 0.01.