Expression of CsZfp in response to polyethylene glycol-8000 (10%), sodium chloride (100 mM) and hydrogen peroxide (0.25%) in the apical bud and the associated two leaves (TAB) harvested during the period of active growth (PAG) as measured by quantitative real-time PCR. Each experiment was carried out over a period of 48 h and the analysis was performed at different time points. Stem cuttings kept in deionized water served as the control. Transcriptional change values are shown in Supplementary Table 1c. Data represent the average of three biological replicates. Statistical significance of differences between the control and treatment groups was determined by one way ANOVA. Vertical bars ± SD; *P < 0.05, significant difference.