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BOUNDARY LAYER RESISTANCE [1 record]

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Record 1 2010-07-28

English

Subject field(s)
  • Plant Biology
CONT

Learning Objectives - Environment and Photosynthesis. ... Understand the impact of wind on boundary layer effects. Understand factors that control boundary layer resistance, stomatal resistance, and mesophyll resistance.

CONT

Diffusion of CO2 into a C3 Leaf. The pathway for CO2 to enter a leaf and be carboxylated by Rubisco can be described in terms of various resistances to diffusion. 1. Boundary layer resistance - still air at surface of leaf. ... 2. Stomatal resistance - diffusion through the stomatal pore. ... 3. Intercellular air space resistance - diffusion from the pore to the mesophyll cell wall. ... 4. Mesophyll resistance - CO2 dissolves in water bathing the cell wall and diffuses in the aqueous phase into the chloroplasts; it includes the carboxylation resistance (resistance to fixation by Rubisco).

French

Domaine(s)
  • Biologie végétale
CONT

Cette absorption [de gaz carbonique] dépend aussi des résistances au transfert gazeux. On en distingue habituellement quatre : la résistance dans la couche limite d'air au voisinage de la feuille, la résistance stomatique, la résistance au transfert dans les tissus de la feuille ou mésophylle et la résistance à la carboxylation de nature chimique.

Spanish

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