Differential accumulation of phenolic compounds in potato in response to weakly and highly aggressive isolates of Verticillium dahliae

Figures & data

Fig. 2. Caffeic acid content (μg g⁻¹ fresh weight) in roots of potato ‘Kennebec’ control plants, and those inoculated with the highly (Vd1396-9) or the weakly (Vs06-14) aggressive V. dahliae isolates over four time points – 1, 3, 7 and 14 days after inoculation. Bars with the same letter(s) are not significantly different according to the least significant difference test at P < 0.05.

Fig. 1. Chlorogenic acid content (μg g⁻¹ fresh weight) in roots of potato ‘Kennebec’ control plants, and those inoculated with the highly (Vd1396-9) or the weakly (Vs06-14) aggressive V. dahliae isolates over four time points – 1, 3, 7 and 14 days after inoculation. Bars with the same letter(s) are not significantly different according to the least significant difference test at P < 0.05.

Fig. 3. Ferulic acid content (μg g⁻¹ fresh weight) in roots of potato ‘Kennebec’ control plants, and those inoculated with the highly (Vd1396-9) or the weakly (Vs06-14) aggressive V. dahliae isolates over four time points – 1, 3, 7 and 14 days after inoculation. Bars with the same letter(s) are not significantly different according to the least significant difference test at P < 0.05.

Fig. 5. Rutin content (μg.g⁻¹ fresh weight) in stems of potato ‘Kennebec’ control plants, and those inoculated with the highly (Vd1396-9) or the weakly (Vs06-14) aggressive V. dahliae isolates over four time points – 1, 3, 7 and 14 days after inoculation. Bars with the same letter(s) are not significantly different according to the least significant difference test at P < 0.05.

Fig. 4. Caffeic acid content (μg g⁻¹ fresh weight) in stems of potato ‘Kennebec’ control plants, and those inoculated with the highly (Vd1396-9) or the weakly (Vs06-14) aggressive V. dahliae isolates over four time points – 1, 3, 7 and 14 days after inoculation. Bars with the same letter(s) are not significantly different according to the least significant difference test at P < 0.05.

Fig. 6. Rutin content (μg g⁻¹ fresh weight) in leaves of potato ‘Kennebec’ control plants, and those inoculated with the highly (Vd1396-9) or the weakly (Vs06-14) aggressive V. dahliae isolates over four time points – 1, 3, 7 and 14 days after inoculation. Bars with the same letter(s) are not significantly different according to the least significant difference test at P < 0.05.