PRESSURE-FLOW HYPOTHESIS ·
Münch mass-flow · source → sink
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.com · phloem sieve tubes · sucrose loading · turgor-driven bulk flow
Source turgor
0.0 MPa
Sap velocity
0.0 m/h
Stage
—
Sucrose (loaded solute)
Water (osmotic influx)
SUT / H⁺-ATPase loaders
Turgor pressure gradient
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.com · The Pressure-Flow Hypothesis