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231224s2014 xx |||||o 00| ||eng c |
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7 |
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|a 10.1093/jxb/ert417
|2 doi
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5 |
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|a pubmed25n0779.xml
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|a (NLM)24368503
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Ham, Byung-Kook
|e verfasserin
|4 aut
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| 245 |
1 |
4 |
|a The angiosperm phloem sieve tube system
|b a role in mediating traits important to modern agriculture
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| 264 |
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|c 2014
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 10.12.2014
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|a Date Revised 16.11.2017
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The plant vascular system serves a vital function by distributing water, nutrients and hormones essential for growth and development to the various organs of the plant. In this review, attention is focused on the role played by the phloem as the conduit for delivery of both photosynthate and information macromolecules, especially from the context of its mediation in traits that are important to modern agriculture. Resource allocation of sugars and amino acids, by the phloem, to specific sink tissues is of importance to crop yield and global food security. Current findings are discussed in the context of a hierarchical control network that operates to integrate resource allocation to competing sinks. The role of plasmodesmata that connect companion cells to neighbouring sieve elements and phloem parenchyma cells is evaluated in terms of their function as valves, connecting the sieve tube pressure manifold system to the various plant tissues. Recent studies have also revealed that plasmodesmata and the phloem sieve tube system function cooperatively to mediate the long-distance delivery of proteins and a diverse array of RNA species. Delivery of these information macromolecules is discussed in terms of their roles in control over the vegetative-to-floral transition, tuberization in potato, stress-related signalling involving miRNAs, and genetic reprogramming through the delivery of 24-nucleotide small RNAs that function in transcriptional gene silencing in recipient sink organs. Finally, we discuss important future research areas that could contribute to developing agricultural crops with engineered performance characteristics for enhance yield potential
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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|a Review
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| 650 |
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|a Carbon allocation
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| 650 |
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|a epigenetics
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| 650 |
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|a phloem long-distance signalling
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|a production agriculture
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| 650 |
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|a protein trafficking
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|a yield potential.
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|a MicroRNAs
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a RNA, Plant
|2 NLM
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| 700 |
1 |
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|a Lucas, William J
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 65(2014), 7 vom: 07. Apr., Seite 1799-816
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:65
|g year:2014
|g number:7
|g day:07
|g month:04
|g pages:1799-816
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/ert417
|3 Volltext
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