Figure 5.

Induction of the ribosomal stress marker SlNAC082 is related to the severity of the symptoms. (A) Real-time PCR analysis of SlNAC082 expression in agro-inoculated plants with mock, CEVd, TCDVd, and PSTVd at 25 dpi. Expression levels are relative to tomato mock plants and normalized to the tomato actin gene. Data correspond to five independent plants ± SE. Data were analyzed using a Mann–Whitney test and different letters indicate significant differences (p ≤ 0.05). (B) Correlation value and equation between the relative induction of SlNAC082 and the decrease in stem length in viroid-inoculated tomato plants.