Fig. 2.

Expression analysis of ZmrbohA–D in leaves of maize plants exposed to ABA treatment. The detached plants were treated with 100 μM ABA for various times as indicated. The plants treated with distilled water under the same conditions during the whole period served as controls. Relative expression levels of Zmrboh genes, analysed by real-time quantitative PCR, are presented as values relative to those of the controls at 0 min, defined as 1, after normalization to Zmactin transcript levels. Values are means ±standard error (n=3). Means denoted by the same letter did not significantly differ at P <0.05 according to Duncan's multiple range test.