Understanding the Hydraulics of Porous Pipes: Tradeoffs Between Water Uptake and Root Length Utilization

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Understanding the Hydraulics of Porous Pipes: Tradeoffs Between Water Uptake and Root Length Utilization

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dc.contributor.author Thompson, Matthew
dc.contributor.author Zwieniecki, Maciej
dc.contributor.author Holbrook, Noel
dc.date.accessioned 2009-06-08T18:19:47Z
dc.date.issued 2003
dc.identifier.citation Zwieniecki, Maciej A., Matthew V. Thompson, and N. Michele Holbrook. 2002. Understanding the hydraulics of porous pipes: Tradeoffs between water uptake and root length utilization. Journal of Plant Growth Regulation 21(4): 315-323. en
dc.identifier.issn 1435-8107 en
dc.identifier.issn 0721-7595 en
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:3047941
dc.description.abstract The water uptake region in roots is several hundred times longer than the root diameter. The distributed nature of the uptake zone requires that the hydraulic design of roots be understood by analogy to flow through a "porous pipe." Here we present results of an analytical and experimental investigation that allowed an in-depth analysis of root hydraulic properties. Measurements on nodal maize roots confirm the nonlinear distribution of water uptake predicted by the porous pipe model. The major design parameter governing the distribution of water uptake along a porous pipe is the ratio between its axial and radial hydraulic resistance. However, total flow is proportional to the pipe's overall resistance. These results suggest the existence of a tradeoff between the effective utilization of root length and the total capacity for water uptake. en
dc.description.sponsorship Organismic and Evolutionary Biology en
dc.language.iso en_US en
dc.publisher Springer Verlag en
dc.relation.isversionof http://dx.doi.org/10.1007/s00344-003-0008-9 en
dash.license META_ONLY
dc.subject maize en
dc.subject roots en
dc.subject hydraulics en
dc.subject porous pipe model en
dc.title Understanding the Hydraulics of Porous Pipes: Tradeoffs Between Water Uptake and Root Length Utilization en
dc.type Journal Article
dc.description.version Version of Record
dc.relation.journal Journal of Plant Growth Regulation en
dash.depositing.author Zwieniecki, Maciej
dash.embargo.until 10000-01-01

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  • FAS Scholarly Articles [7594]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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