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 leaves | Multivein leaf halves | One-vein leaf halves | ||||
|---|---|---|---|---|---|---|
| −Xf | +Xf | −Xf | +Xf | −Xf | +Xf | |
| Stomatal conductance (cm s−1) | 0.30 ± 0.04a | 0.34 ± 0.06a | 0.37 ± 0.05a | 0.29 ± 0.03a | 0.14 ± 0.03b | 0.15 ± 0.03b |
| Transpiration (μ g cm−2 s−1) | 3.21 ± 0.43a | 3.49 ± 0.60a | 3.78 ± 0.51a | 3.20 ± 0.30a | 1.82 ± 0.41b | 1.65 ± 0.37b |