Results 21 to 30 of about 14,107 (256)
Frontiers in Plant Science, 2021 In this paper, we present and use a coupled xylem/phloem mathematical model of passive water and solute transport through a reticulated vascular system of an angiosperm leaf.
Gen Sakurai, Stanley J. Miklavcic
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Scaling phloem transport: information transmission [PDF]
Plant, Cell & Environment, 2004 ABSTRACTSieve tubes are primarily responsible for the movement of solutes over long distances, but they also conduct information about the osmotic state of the system. Using a previously developed dimensionless model of phloem transport, the mechanism behind the sieve tube's capacity to rapidly transmit pressure/concentration waves in response to local
M. V. THOMPSON, N. M. HOLBROOK
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Scaling of xylem and phloem transport capacity and resource usage with tree size
Frontiers in Plant Science, 2013 Xylem and phloem need to maintain steady transport rates of water and carbohydrates to match the exchange rates of these compounds at the leaves. A major proportion of the carbon and nitrogen assimilated by a tree is allocated to the construction and ...
Teemu eHölttä +2 more
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PLoS ONE, 2015 Sugars produced from photosynthesis in leaves are transported through the phloem tissues within veins and delivered to non-photosynthetic organs, such as roots, stems, flowers, and seeds, to support their growth and/or storage of carbohydrates.
David Rotsch +9 more
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Post-phloem transport: principles and problems
Journal of Experimental Botany, 1996 The movement of assimilates from the sieve element/companion cell complex to sites of utilization has been examined in an extensive array of sinks possessing diverse anatomies. This work has been reviewed with respect to the pathways taken, the conductances and driving forces for movement along the pathways, and interaction between the apoplast and ...
D B, Fisher, K J, Oparka
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Long-distance hormone transport via the phloem
Journal of Theoretical Biology, 2023 Several key plant hormones are synthesised in the shoot and are advected within the phloem to the root tip. In the root tip, these hormones regulate growth and developmental processes, and responses to environmental cues. However, we lack understanding of how environmental factors and biological parameters affect the delivery of hormones to the root ...
Heather L. Collis +2 more
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Structural and functional heterogeneity in phloem loading and transport
Frontiers in Plant Science, 2013 The phloem is often regarded as a relatively straightforward transport system composed of loading (collection), long-distance (transport) and unloading zones.
Thomas L. Slewinski +2 more
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Linking phloem function to structure: Analysis with a coupled xylem–phloem transport model [PDF]
Journal of Theoretical Biology, 2009 We carried out a theoretical analysis of phloem transport based on Münch hypothesis by developing a coupled xylem-phloem transport model. Results showed that the maximum sugar transport rate of the phloem was limited by solution viscosity and that transport requirements were strongly affected by prevailing xylem water potential.
Hölttä, Teemu +2 more
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Bio-Protocol, 2017 Phloem loading and transport of photoassimilate from photoautotrophic source leaves to heterotrophic sink organs are essential physiological processes that help the disparate organs of a plant function as a single, unified organism.
Umesh Yadav +4 more
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BMC Plant Biology, 2009 Background AtSUC2 (At1g22710) from Arabidopsis thaliana encodes a phloem-localized sucrose/proton symporter required for efficient photoassimilate transport from source tissues to sink tissues.
Ismail Ihab O +3 more
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