Minimum flow speed of sugars in plant cells

Range 5 to 50 µm/sec
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.4 left column 2nd paragraphPubMed ID23383844
Primary Source Vogel S. Living in a physical world. J Biosci. 2004 Dec29(4):391-7.PubMed ID15625395
Comments "With typical plant cell sizes in the range of d=10–100µm, diffusion and advection of sugars are equally effective over these length scales when the Peclet number Pe=vd/D=1 [primary source], where v is the flow speed and D is the diffusion coefficient (D=0.5?10^-9m^2/s for sucrose [CRC Handbook of Chemistry and Physics, edited by W. M. Haynes (CRC Press, Boca Raton, FL, 2012), 93rd ed.]). [Researchers] therefore expect v~D/d=5–50µm/s to provide a lower estimate of the minimum flow speed umin."
Entered by Uri M
ID 108687