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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1111/nph.14845
|2 doi
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|a pubmed25n0921.xml
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|e rakwb
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|a eng
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|a Lamport, Derek T A
|e verfasserin
|4 aut
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|a Pollen tube growth and guidance
|b Occam's razor sharpened on a molecular arabinogalactan glycoprotein Rosetta Stone
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 12.09.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.
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|a Occam's Razor suggests a new model of pollen tube tip growth based on a novel Hechtian oscillator that integrates a periplasmic arabinogalactan glycoprotein-calcium (AGP-Ca2+ ) capacitor with tip-localized AGPs as the source of tip-focussed cytosolic Ca2+ oscillations: Hechtian adhesion between the plasma membrane and the cell wall of the growing tip acts as a piconewton force transducer that couples the internal stress of a rapidly growing wall to the plasma membrane. Such Hechtian transduction opens stretch-activated Ca2+ channels and activates H+ -ATPase proton pump efflux that dissociates periplasmic AGP-Ca2+ resulting in a Ca2+ influx that activates exocytosis of wall precursors. Thus, a highly simplified pectic primary cell wall regulates its own synthesis by a Hechtian growth oscillator that regulates overall tip growth. By analogy with the three cryptic inscriptions of the classical Rosetta Stone, the Hechtian Hypothesis translates classical AGP function as a Ca2+ capacitor, pollen tube guide and wall plasticizer into a simple but widely applicable model of tip growth. Even wider ramifications of the Hechtian oscillator may implicate AGPs in osmosensing or gravisensing and other tropisms, leading us yet further towards the Holy Grail of plant growth
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|a Journal Article
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|a Review
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|a Hechtian oscillator
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|a arabinogalactan proteins
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|a calcium signalling
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|a cell extension
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|a pectin
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|a pollen tube tip growth
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|a Galactans
|2 NLM
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|a Glycoproteins
|2 NLM
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|a arabinogalactan
|2 NLM
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|a SL4SX1O487
|2 NLM
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| 700 |
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|a Tan, Li
|e verfasserin
|4 aut
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|a Held, Michael A
|e verfasserin
|4 aut
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|a Kieliszewski, Marcia J
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1989
|g 217(2018), 2 vom: 15. Jan., Seite 491-500
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:217
|g year:2018
|g number:2
|g day:15
|g month:01
|g pages:491-500
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|u http://dx.doi.org/10.1111/nph.14845
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|d 217
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|h 491-500
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