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    Description

    Physiological mechanisms behind plant-herbivore interactions are commonly approached as input-output systems where the role of plant physiology is viewed as a black box. Studies evaluating impacts of defoliation on plant physiology have mostly focused on changes in photosynthesis while the overall impact on plant water relations is largely unknown. Stem hydraulic conductivity (kh), stem specific conductivity (ks), percent loss of hydraulic conductivity (PLC), CO2 assimilation (A) and stomatal conductance (gs) were measured on well-irrigated 1-month-old Populus tremuloides (Michx.) defoliated and control seedlings until complete refoliation.

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    Citation

    Galvez, David A.; Tyree, M.T. 2009. Impact of simulated herbivory on water relations of aspen (Populus tremuloides) seedlings: the role of new tissue in the hydraulic conductivity recovery cycle. Oecologia. 161: 665-671.

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    Keywords

    defoliation, gradual physiological changes, percent loss of conductivity, plant responses, refoliation process

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