Table II. Flux CCs determined from their effect on diffusion-related parameters.

We simulated the following scenarios: high light, PPFD = 2,000 μmol m⁻² s⁻¹, C_i = 15 Pa; low light, PPFD = 200 μmol m⁻² s⁻¹, C_i = 15 Pa; and low CO₂: PPFD = 2,000 μmol m⁻² s⁻¹, C_i = 55 Pa. D_{mal_pd}, Diffusion coefficient of malate in plasmodesmata; D_{co2_pd}, diffusion coefficient of CO₂ in plasmodesmata; P_{co2_Bchl}, permeability coefficient of CO₂ in BSC chloroplast envelope; Φ, the fraction of the BSC-MC interface cross-sectional area that is permeated by plasmodesmata; L_pd, the length of plasmodesmata.

Diffusion Parameter	Value	Flux CC
		High Light	Low CO2	Low Light
gm	7 μmol m−2 s−1 Pa−1	0.002	0.495a	0.000
Dmal_pd	6.77 × 10−10 m2 s−1	0.000	0.041a	0.000
Dco2_pd	1.7 × 10−9 m2 s−1	−0.045a	−0.047a	−0.042a
Pco2_Bchl	20 μm s−1	−0.023a	−0.004	−0.020
Φ	0.03	−0.045a	−0.028	−0.040a
Lpd	400 nm	0.044a	0.028	0.040a

^aFlux CCs above 0.02.