Table 1.

RNA nitration measured as concentration of 8-NO₂-G (pg·µg⁻¹ RNA) in axes of apple embryos isolated after 24 h of seeds imbibition in water (C₀), in axes of embryos imbibed in water for 3 h after seed coat removal (C), in axes of embryos fumigated with NO for 3 h (NO), quantification of nitrated RNA measured as 8-NO₂-G concentration in embryos isolated from seed coat after treatment with 0.3 mM SIN-1 in light conditions for 3 h (SIN-1).

Plant Material	Concentration of 8-NO2-G (pg µg−1 RNA)
C0	72.5 ± 3.2 a
C	73.0 ± 3.9 a
NO	84.2 ± 3.6 b
SIN-1	103 ± 4.1 c

Two technical replicates were performed for each four biological replicates. Mean values ± SD; a–c homogenous groups.