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Table 3 Glucose, fructose, sucrose, and starch concentrations measured in leaves (a), stems (b) and roots (c) of 5C and Riesling x 5C (RR) 8 weeks after the beginning of treatments (n = 5–8). W = well-watered plants; D = drought-stressed; C = control, non-phylloxerated; P = root phylloxerated. * indicates statistically significant differences within the factors (Irrigation or Infestation). At root level, a significant interaction between factors (Irr x Inf) was observed in sucrose measured in 5C (within D level: C > P; within C level: W < D) and glucose (within W level: C > P; within C level: W > D) measured in RR

From: Gas exchange, biomass and non-structural carbohydrates dynamics in vines under combined drought and biotic stress

  5C RR
Irrigation Infestation Interaction Irrigation Infestation Interaction
(a) Leaves W D C P Irr x Inf W D C P Irr x Inf
 Glucose, mg g− 1 24.2 ± 2.7 15.1 ± 2.8* 17.7 ± 2.8 21.7 ± 2.7 n.s. 14.7 ± 1.1 9.2 ± 1.1* 12.3 ± 1.1 11.6 ± 1.1 n.s.
 Fructose, mg g− 1 31.6 ± 3.8 18.7 ± 3.8* 21.5 ± 3.9 28.8 ± 3.7 n.s. 13.7 ± 1.1 8.6 ± 1.2* 11.3 ± 1.1 11.0 ± 1.2 n.s.
 Sucrose, mg g− 1 101.5 ± 12.7 99.5 ± 11.9 89.7 ± 13.0 111.4 ± 11.5 n.s. 111.2 ± 9.6 110.4 ± 10.0 115.1 ± 10.0 106.4 ± 9.6 n.s.
 Starch, mg g− 1 2.5 ± 0.4 3.4 ± 0.4 3.1 ± 0.4 2.7 ± 0.4 n.s. 9.1 ± 1.0 3.9 ± 1.1* 8.2 ± 1.0 4.8 ± 1.1* n.s.
(b) Stems W D C P Irr x Inf W D C P Irr x Inf
 Glucose, mg g− 1 7.6 ± 0.6 4.1 ± 0.6* 5.7 ± 0.6 6.1 ± 0.6 n.s. 3.3 ± 0.4 4.9 ± 0.4* 4.4 ± 0.4 3.8 ± 0.4 n.s.
 Fructose, mg g− 1 4.7 ± 0.3 2.5 ± 0.3* 3.7 ± 0.3 3.5 ± 0.3 n.s. 1.7 ± 0.1 2.1 ± 0.1* 1.9 ± 0.1 1.9 ± 0.1 n.s.
 Sucrose, mg g− 1 95.7 ± 4.6 93.4 ± 4.6 96.0 ± 4.8 93.1 ± 4.5 n.s. 80.4 ± 4.5 87.2 ± 4.5 84.0 ± 4.5 83.6 ± 4.5 n.s.
 Starch, mg g− 1 11.5 ± 1.7 15.9 ± 1.8 15.1 ± 1.8 12.3 ± 1.7 n.s. 8.4 ± 1.4 19.1 ± 1.4* 13.8 ± 1.4 13.7 ± 1.4 n.s.
(c) Roots W D C P Irr x Inf W D C P Irr x Inf
 Glucose, mg g−1 74.3 ± 8.3 60.1 ± 8.0 101.2 ± 8.0 33.1 ± 8.3* n.s. 72.8 ± 7.4 38.0 ± 8.1* 84.1 ± 8.1 26.8 ± 7.4* *
 Fructose, mg g− 1 17.5 ± 2.0 19.5 ± 1.9 27.6 ± 1.9 9.4 ± 2.0* n.s. 13.4 ± 1.8 13.7 ± 1.9 19.2 ± 1.9 7.9 ± 1.8* n.s.
 Sucrose, mg g− 1 77.7 ± 6.2 95.3 ± 6.0* 94.5 ± 6.0 78.5 ± 6.2 * 72.7 ± 5.0 93.7 ± 5.0* 98.7 ± 5.2 67.6 ± 4.8* n.s.
 Starch, mg g−1 18.7 ± 2.9 17.1 ± 3.0 15.3 ± 2.9 20.4 ± 3.0 n.s. 21.7 ± 2.7 13.2 ± 2.9* 18.3 ± 2.9 16.6 ± 2.7 n.s.