Table 1

Stomatal conductance and transpiration of uncut leaves and leaves 14 days after all veins but one were severed in each leaf such that a single leaf vein was the sole water source for the nearly severed portion of the leaf in healthy (−Xf) and Xf-infected (+Xf) grapevines in the greenhouse. Data are means ± standard error (n = 3–13); p = 0.05.

Uncut leavesMultivein leaf halvesOne-vein leaf halves
−Xf+Xf−Xf+Xf−Xf+Xf
Stomatal conductance (cm s−1)0.30 ± 0.04a0.34 ± 0.06a0.37 ± 0.05a0.29 ± 0.03a0.14 ± 0.03b0.15 ± 0.03b
Transpiration (μ g cm−2 s−1)3.21 ± 0.43a3.49 ± 0.60a3.78 ± 0.51a3.20 ± 0.30a1.82 ± 0.41b1.65 ± 0.37b