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|a 10.1093/jxb/erae387
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|a (PII)erae387
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|a DE-627
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|a eng
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|a LoRicco, Josephine G
|e verfasserin
|4 aut
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|a Aberrant growth and expansion in Penium margaritaceum triggered by disruption of microtubules and the cell wall
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|c 2024
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 13.09.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For commercial re-use, please contact reprintsoup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
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|a Penium margaritaceum, a unicellular zygnematophyte (Streptophyta), was employed to elucidate changes in cell expansion when cells were challenged with the fungal pectinolytic enzyme, pectate lyase, and/or the microtubule disrupting agent, amiprophos-methyl (APM). Microtubule disruption by APM results in significant swelling at expansion zones. These swollen zones provide an easy marker for the location of expansion zones, particularly in cells with altered cell wall pectin. Short term treatment with pectate lyase shows pectin degradation primarily at the isthmus expansion zone and two satellite bands, corresponding with the location of future expansion in daughter cells. When the homogalacturonan lattice of the cell wall is removed by treatment with pectate lyase during long treatments, cell division is maintained, but daughter cell products are considerably smaller. Treatment of cells with a mixture of both pectate lyase and APM results in a distinct phenotype, consisting of "dumbbell"-shaped cells, as APM-induced swelling occurs at the novel expansion centers exposed by pectate lyase treatment. These cells also possess other curious alterations including an extensive, chloroplast-free cytoplasmic zone at the center of the cell, a septum containing ß-glycan, arabinogalactan and homogalacturonan epitopes, unique stacks of ER, displaced Golgi bodies and an extensive network of vacuoles. These results provide insight into the importance of cell wall integrity in defining the location of cell growth and division in P. margaritaceum. Understanding these processes in a unicellular zygnematophyte may provide insights into steps involved in the evolution of land plants
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|a Journal Article
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|a Penium margaritaceum
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|a Cell Wall
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|a Cell Wall Integrity
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|a Microtubules
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| 650 |
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|a Pectate Lyase
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|a Pectin
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| 650 |
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|a Tomography
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| 650 |
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|a Zygnematophyte
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|a Malone, Stuart
|e verfasserin
|4 aut
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|a Becker, Abigail
|e verfasserin
|4 aut
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|a Xue, Nichole
|e verfasserin
|4 aut
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|a Bagdan, Kaylee
|e verfasserin
|4 aut
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|a Eastman, Anika
|e verfasserin
|4 aut
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|a Sgambettera, Gabriel
|e verfasserin
|4 aut
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|a Winegrad, Aaron
|e verfasserin
|4 aut
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|a Gibeau, Benjamin
|e verfasserin
|4 aut
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|a Bauer, Lindsay
|e verfasserin
|4 aut
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|a Epstein, Ruby
|e verfasserin
|4 aut
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|a Domozych, David S
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g (2024) vom: 12. Sept.
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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|g year:2024
|g day:12
|g month:09
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|u http://dx.doi.org/10.1093/jxb/erae387
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