Fig. 8
Silencing of GhRR7 compromised cotton drought stress tolerance. A The positive control plants, control and target gene-silenced before 20% PEG6000 stress treatment. B Relative expression levels of control plants and target gene-silenced. C The expression levels of GhAHK3, GhAHP5 and GhPHYB genes in GhRR7 silenced plants. D POD activity between control plants and target gene-silenced under mock and 20% PEG6000 stress treatment. E SOD activity between control plants and target gene-silenced under mock and 20% PEG6000 stress treatment The expression levels of GhAHK3, GhAHP5 and GhPHYB genes in GhRR7 silenced plants. F CAT activity between control plants and target gene-silenced under mock and 20% PEG6000 stress treatment. G H2O2 amount of control plants and target gene-silenced under mock and 20% PEG6000 stress treatment. The data represent the means_SE from three independent experiments, t-tests: *p < 0.05, **p < 0.01