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The Puzzle of Phloem Pressure [PDF]
Plant Physiology, 2010 Although transport of organic nutrients and regulatory molecules in the phloem underlies all aspects of growth and development, we still cannot say with confidence that we adequately understand how it is motivated. A major problem is that it is difficult to reconcile the theory of pressure flow,
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Challenging battles of plants with phloem-feeding insects and prokaryotic pathogens
Proceedings of the National Academy of Sciences of the United States of America, 2019 Significance Piercing-sucking insects and phloem-inhabiting prokaryotic pathogens contribute to some of the world’s most disastrous crop losses, including those caused by the brown plant hopper in rice or citrus greening in citrus.
Yanjuan Jiang +3 more
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Phloem unloading in Arabidopsis roots is convective and regulated by the phloem-pole pericycle
eLife, 2017 In plants, a complex mixture of solutes and macromolecules is transported by the phloem. Here, we examined how solutes and macromolecules are separated when they exit the phloem during the unloading process.
Timothy J. Ross-Elliott +16 more
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Impaired phloem loading in zmsweet13a,b,c sucrose transporter triple knock-out mutants in Zea mays.
New Phytologist, 2018 Crop yield depends on efficient allocation of sucrose from leaves to seeds. In Arabidopsis, phloem loading is mediated by a combination of SWEET sucrose effluxers and subsequent uptake by SUT1/SUC2 sucrose/H+ symporters.
Margaret Bezrutczyk +7 more
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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 ...
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Solution-Flow in the Phloem [PDF]
Plant Physiology, 1972 Translocation profiles along the path were studied using a modified flap-feeding technique for the simultaneous application of THO and (14)C-sucrose. A re-evaluation of a mathematical model for phloem transport with reversible lateral exchange of tracer along the path indicates that lower apparent velocities for THO as compared to labeled carbohydrate ...
D A, Cataldo, A L, Christy, C L, Coulson
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Frontiers in Plant Science, 2019 Huanglongbing (HLB) is an extremely destructive and lethal disease of citrus worldwide, presumably caused by phloem-limited bacteria, Candidatus Liberibacter asiaticus (CLas).
Honghong Deng +7 more
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CLE25 peptide regulates phloem initiation in Arabidopsis through a CLERK-CLV2 receptor complex.
Journal of Integrative Plant Biology, 2019 The phloem, located within the vascular system, is critical for delivery of nutrients and signaling molecules throughout the plant body. Although the morphological process and several factors regulating phloem differentiation have been reported, the ...
Shichao Ren +5 more
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Drought impacts on phloem transport.
Current opinion in plant biology, 2018 Drought impacts on phloem transport have attracted attention only recently, despite the well-established, and empirically verified theories on drought impacts on water transport in plants in general.
S. Sevanto
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Strigolactone- and Karrikin-Independent SMXL Proteins Are Central Regulators of Phloem Formation
Current Biology, 2017 Summary Plant stem cell niches, the meristems, require long-distance transport of energy metabolites and signaling molecules along the phloem tissue. However, currently it is unclear how specification of phloem cells is controlled.
E. Wallner +12 more
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