Equivalence of foliar water uptake and stomatal conductance?
Plant Cell & Environment2019Vol. 43(2), pp. 524–528
Citations Over TimeTop 10% of 2019 papers
Abstract
Foliar water uptake, FWU, the uptake of atmospheric water directly into leaves, has been reported to occur in nearly 200 species spanning a wide range of ecosystems distributed globally. In order to represent FWU in land‐surface models, a conductance term is required to scale the process to the canopy level. Here we show that conductance to FWU is theoretically equivalent to stomatal conductance and that under commonly occurring conditions vapour could diffuse into leaves at rates equivalent to those reported as FWU. We therefore conclude that such ‘reverse transpiration’ could partially, or even wholly, account for FWU in some plants.
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