Results 121 to 130 of about 15,228 (159)
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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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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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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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Effects of Wounding on Transport in the Phloem
Journal of Experimental Botany, 1980The problem dealt with was the nature of the mechanisms of the recovery of the phloem of Phaseolus vulgaris from the effects of wounds. The influence of root removal on the transport of [14C]sucrose and of fluorescein was followed both in the direction of the root and in the opposite direction, towards the intact shoot.
M. GERSANI, S. H. LIPS, T. SACHS
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Role of phloem in sucrose transport by Ricinus cotyledons
Planta, 1980Sucrose is taken up and accumulated by cotyledons of Ricinus communis L. Autoradiographic studies reveal a predominant accumulation of sucrose in the phloem of the cotyledons. The export of sucrose from the cotyledons to hypocotyl and roots proceeds in the phloem by mass flow.
E, Martin, E, Komor
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Cadmium transport characteristics in the phloem of sweet potato
Plant Physiology and BiochemistryCadmium (Cd) pollution in farmland soil poses serious threats to human health. The Cd transport and accumulation in the aboveground tissues of sweet potato (Ipomoea batatas L.) variety "Fu Cai 18″ and the characteristics of phloem-mediated Cd transport were elucidated in this study. Sweet potato seedlings grown in hydroponics were analyzed.
Zanming, Chen +6 more
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Origin of Cytokinins Transported in the Phloem
Physiologia Plantarum, 1979AbstractThe origin of cytokinins in the exudate of Yucca inflorescences has been studied. A decrease in nucleotides of both isopenlenyladenine and zeatin was observed after removal of leaves as measured over a three day period. Removal of roots and the greater part of the rhizome resulted in a transient decline of isopenlenyladenincand zeatin ...
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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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Xylem and phloem transport of micronutrients
2001Knowledge on xylem, and especially phloem transport of micronutrients is important in developing our capacity to enhance loading of micronutrients into developing grain (which has consequences for human nutrition), to increase nutrient-use efficiency through increased remobilisation and re-utilisation of nutrients, to effectively nourish seedlings in ...
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