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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/eraa134
|2 doi
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|a eng
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| 100 |
1 |
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|a Guo, Jingzhe
|e verfasserin
|4 aut
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| 245 |
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|a Exocytosis and endocytosis
|b coordinating and fine-tuning the polar tip growth domain in pollen tubes
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|c 2020
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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
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|a Date Completed 10.05.2021
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|a Date Revised 10.05.2021
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a Pollen tubes rapidly elongate, penetrate, and navigate through multiple female tissues to reach ovules for sperm delivery by utilizing a specialized form of polar growth known as tip growth. This process requires a battery of cellular activities differentially occurring at the apical growing region of the plasma membrane (PM), such as the differential cellular signaling involving calcium (Ca2+), phospholipids, and ROP-type Rho GTPases, fluctuation of ions and pH, exocytosis and endocytosis, and cell wall construction and remodeling. There is an emerging understanding of how at least some of these activities are coordinated and/or interconnected. The apical active ROP modulates exocytosis to the cell apex for PM and cell wall expansion differentially occurring at the tip. The differentiation of the cell wall involves at least the preferential distribution of deformable pectin polymers to the apex and non-deformable pectin polymers to the shank of pollen tubes, facilitating the apical cell expansion driven by high internal turgor pressure. Recent studies have generated inroads into how the ROP GTPase-based intracellular signaling is coordinated spatiotemporally with the external wall mechanics to maintain the tubular cell shape and how the apical cell wall mechanics are regulated to allow rapid tip growth while maintaining the cell wall integrity under the turgor pressure. Evidence suggests that exocytosis and endocytosis play crucial but distinct roles in this spatiotemporal coordination. In this review, we summarize recent advances in the regulation and coordination of the differential pectin distribution and the apical domain of active ROP by exocytosis and endocytosis in pollen tubes
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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|a Review
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|a Cell wall
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|a ROP GTPase
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|a endocytosis
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|a exocytosis
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|a pollen tube
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|a tip growth
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|a Pectins
|2 NLM
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| 650 |
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|a 89NA02M4RX
|2 NLM
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| 650 |
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|a rho GTP-Binding Proteins
|2 NLM
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| 650 |
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|a EC 3.6.5.2
|2 NLM
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| 700 |
1 |
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|a Yang, Zhenbiao
|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 71(2020), 8 vom: 23. Apr., Seite 2428-2438
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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|g volume:71
|g year:2020
|g number:8
|g day:23
|g month:04
|g pages:2428-2438
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|u http://dx.doi.org/10.1093/jxb/eraa134
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