BIOL 300, OUTLINE #6, TRANSPORT

1. Water Potential

a. components of water potential

b. functional components of water potential: y = y_P + y_s

c. pressure potential

d. solute potential

2. Water Movement

a. osmosis

b. bulk flow

3. Water Movement from Soil into Plant

a. symplast

b. apoplast

c. transcellular route

d. Casparian strip

4. Water Movement through Plant to Atmosphere

a. transpiration

b. atmospheric water potential

c. soil water potential

d. tension gradient

e. cohesion/adhesion

f. P/T conflict

g. stomatal function

5. Phloem Transport

a. phloem sap

b. direction of transport

6. Pressure-Flow Model

a. sucrose production

b. sucrose loading at source

c. osmosis to source region, pressure flow

d. sucrose off loading at sink

e. osmosis out at sink region, pressure flow

f. water transfer from phloem to xylem