Apoplastic loading of sucrose into phloem sieve tubes involves active transport where H+ ions are pumped out, creating a gradient. Sucrose then moves back in via co-transport proteins, utilizing this H+ gradient.
Apoplastic loading of sucrose into phloem sieve tubes involves active transport where H+ ions are pumped out, creating a gradient. Sucrose then moves back in via co-transport proteins, utilizing this H+ gradient.
| Front | description of apoplastic loading of sucrose into phloem sieve tubes |
|---|---|
| Back | active transport, H+ ions out by proton pumps (ATP hydrolysis) creates gradient, H+ ions diffuse back via co-transport protein that requires sucrose movement |
Tags: 9_2_phloem_transport
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