Coordination Between Phloem Loading and Structure Maintains Carbon Transport Under Drought [PDF]
Frontiers in Plant Science, 2022 Maintaining phloem transport under water stress is expected to be crucial to whole-plant drought tolerance, but the traits that benefit phloem function under drought are poorly understood.
Ryan C. Stanfield, Megan K. Bartlett
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Frontiers in Plant Science, 2013 The pressure flow model of phloem transport envisaged by Münch (1930) has gained wide acceptance. Recently, however, the model has been questioned on structural and physiological grounds.
John William Patrick
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Phloem transport and drought [PDF]
Journal of Experimental Botany, 2014 Drought challenges plant water uptake and the vascular system. In the xylem it causes embolism that impairs water transport from the soil to the leaves and, if uncontrolled, may even lead to plant mortality via hydraulic failure. What happens in the phloem, however, is less clear because measuring phloem transport is still a significant challenge to ...
Sanna Sevanto
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Determination of the phloem transport pathways and destination of photosynthates in soybean using autoradiography and fluorescent tracer imaging [PDF]
Plant Signaling & BehaviorVascular tissues transport water and nutrients in plants, with the phloem distributing photosynthates from source to sink. The direction of phloem transport is determined by the positional relationship between sources and sinks and by vascular ...
Ai Kaiho-Soma +4 more
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Investigating phloem transport dynamics in Arabidopsis through compartmental modelling of positron emission tomography data [PDF]
Plant MethodsBackground Phloem is the long-distance transport tissue of vascular plants in which photoassimilates are distributed from sources (e.g., leaves) to sinks (e.g., roots, fruits).
Jens Mincke +6 more
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A Proposed Drought Response Equation Added to the Münch-Horwitz Theory of Phloem Transport [PDF]
Frontiers in Plant Science, 2020 Theoretical and experimental evidence for an effect of sieve tube turgor pressure on the mechanisms of phloem unloading near the root tips during moderate levels of drought stress is reviewed.
John D. Goeschl, Lifeng Han
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An update on phloem transport: a simple bulk flow under complex regulation [version 1; referees: 5 approved] [PDF]
F1000Research, 2017 The phloem plays a central role in transporting resources and signalling molecules from fully expanded leaves to provide precursors for, and to direct development of, heterotrophic organs located throughout the plant body.
Johannes Liesche, John Patrick
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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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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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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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