a Abscisic acid (ABA) concentrations and b carbon isotope discrimination (δ13C) of P.xcanescens plants grown one season in a greenhouse. Analyzed were wild type plants (WT,
, n = 6), empty vector control (C,
, n = 6), PcISPS-RNAi lines (RA1/17,
, n = 11). The δ13C values were expressed in delta notation with respect to Vienna Peedee Belemnite (VPDB). ANOVA was performed for each sampling date separately (SPSS, P > 0.05), error bars represent the standard error of mean. n.s. not significant