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Phloem transport of sulfur in Ricinus
Planta, 1982Mature leaves of Ricinus communis fed with (35)SO 4 (2-) in the light export labeled sulfate and reduced sulfur compounds by phloem transport. Only 1-2% of the absorbed radiosulfur is exported to the stem within 2-3 h, roughly 12% of (35)S recovered was in reduced form.
U, Bonas +3 more
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1989
Publisher Summary The term phloem transport refers to the flow of assimilates from their site of synthesis or storage to their site of consumption for methodological reasons and may be separated into three phases: phloem loading, long-distance transport, and phloem unloading.
Gabriele Orlich, Ewald Komor
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Publisher Summary The term phloem transport refers to the flow of assimilates from their site of synthesis or storage to their site of consumption for methodological reasons and may be separated into three phases: phloem loading, long-distance transport, and phloem unloading.
Gabriele Orlich, Ewald Komor
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Nature, 1971
Exactly how nutrient materials travel through the green plant is still a matter for controversy. This review highlights some of the current points of interest.
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Exactly how nutrient materials travel through the green plant is still a matter for controversy. This review highlights some of the current points of interest.
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Intracellular Transport Apparatus of Phloem Fibers
Science, 1964Rotational streaming of cytoplasm occurs in the form of longicellular currents in immature and relatively mature fibers of bean stems. Plastids carried by these currents move continuously on their rotational course from one end of the cell to the other in relatively straight lines.
J W, Mitchell, J F, Worley
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Physiology of Phloem Transport
1995Some deciduous trees transport considerable amounts of sugars in their vessels in spring. If a hole is drilled in the stem of a sugar maple (Acer saccharum) before budding, for example, a sugarrich “bleeding sap” flows out of the wood. How does this happen? Because of the secretion of sugar, especially sucrose, from storage cells via contact cells into
Hans Mohr, Peter Schopfer
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1992
The direction of the long distance transport of solutes in the xylem is governed by transpiration and so takes place from root to shoot. Transport in the reverse direction occurs in a specialised tissue known as phloem (from the Latin word for bark): together xylem and phloem make up the vascular tissue of the plant.
T. J. Flowers, A. R. Yeo
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The direction of the long distance transport of solutes in the xylem is governed by transpiration and so takes place from root to shoot. Transport in the reverse direction occurs in a specialised tissue known as phloem (from the Latin word for bark): together xylem and phloem make up the vascular tissue of the plant.
T. J. Flowers, A. R. Yeo
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1976
A multicellular plant with specialised organs can only function effectively if it has an organised transport system. The over-all nutrition and growth of a plant may depend as much on the efficient transfer of nutrients between its component parts as it does on their total synthesis or uptake.
C. Marshall, G. R. Sagar
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A multicellular plant with specialised organs can only function effectively if it has an organised transport system. The over-all nutrition and growth of a plant may depend as much on the efficient transfer of nutrients between its component parts as it does on their total synthesis or uptake.
C. Marshall, G. R. Sagar
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Measuring Phloem Transport Velocity on a Tissue Level Using a Phloem-Mobile Dye
2019Here we describe an in vivo dye-tracking method for measuring phloem transport velocity in seedlings, leaves and petioles and potentially other translucent plant tissues. The method requires measurement of the fluorescent signal of a phloem-mobile fluorescent dye using sensitive photo-sensors placed external to the plant.
Jessica A, Savage, Maciej A, Zwieniecki
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Ecophysiological Aspects of Phloem Transport in Trees
2014The primary function of the phloem is the transport of assimilate products from mature leaves to other tissues. Here we examine this function from a whole tree perspective and relate it to assimilate production, tree water relations, and tree structure.
Teemu Hölttä +2 more
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Scaling phloem transport: Elasticity and pressure–concentration waves
Journal of Theoretical Biology, 2005Earlier theoretical analyses of the rate of propagation of pressure-concentration waves in the phloem were performed without adequate attention to the elastic expansion of sieve tube walls. Here, it is shown that the rate of propagation of pressure-concentration waves in phloem sieve tubes is not significantly impeded by wall elasticity, but rather, as
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