Available pressure differential for sugar loading into the phloem vasculature

Range ~1 MPa
Organism Plants
Reference Kaare H. Jensen & Maciej A. Zwieniecki, Physical Limits to Leaf Size in Tall Trees, Physical review letters, PRL 110, 018104 (2013) DOI: 10.1103/PhysRevLett.110.018104 p.3 right column top paragraphPubMed ID23383844
Primary Source Turgeon R. The puzzle of phloem pressure. Plant Physiol. 2010 Oct154(2):578-81. doi: 10.1104/pp.110.161679. AND Turgeon R. The role of phloem loading reconsidered. Plant Physiol. 2010 Apr152(4):1817-23. doi: 10.1104/pp.110.153023.PubMed ID20921188, 20200065
Comments "For most trees, sugar loading into the phloem vasculature is believed to be a passive, diffusion-mediated process, and the available pressure differential ?p~1 MPa does not scale with tree height and may be treated as an independent parameter [primary sources]."
Entered by Uri M
ID 108684