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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2015.02.013
|2 doi
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|a pubmed24n0845.xml
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|a (DE-627)NLM253563631
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|a (NLM)26454639
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|a (PII)S0176-1617(15)00077-2
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Kamdee, Channatika
|e verfasserin
|4 aut
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| 245 |
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|a Vesicles between plasma membrane and cell wall prior to visible senescence of Iris and Dendrobium flowers
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|c 2015
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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 08.08.2016
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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 Copyright © 2015 Elsevier GmbH. All rights reserved.
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|a Cut Iris flowers (Iris x hollandica, cv. Blue Magic) show visible senescence about two days after full opening. Epidermal cells of the outer tepals collapse due to programmed cell death (PCD). Transmission electron microscopy (TEM) showed irregular swelling of the cell walls, starting prior to cell collapse. Compared to cells in flowers that had just opened, wall thickness increased up to tenfold prior to cell death. Fibrils were visible in the swollen walls. After cell death very little of the cell wall remained. Prior to and during visible wall swelling, vesicles (paramural bodies) were observed between the plasma membrane and the cell walls. The vesicles were also found in groups and were accompanied by amorphous substance. They usually showed a single membrane, and had a variety of diameters and electron densities. Cut Dendrobium hybrid cv. Lucky Duan flowers exhibited visible senescence about 14 days after full flower opening. Paramural bodies were also found in Dendrobium tepal epidermis and mesophyll cells, related to wall swelling and degradation. Although alternative explanations are well possible, it is hypothesized that paramural bodies carry enzymes involved in cell wall breakdown. The literature has not yet reported such bodies in association with senescence/PCD
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Cell wall degradation
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|a Cell wall enzymes
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|a Cell wall swelling
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|a Programmed cell death
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| 650 |
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|a Senescence
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|a Kirasak, Kanjana
|e verfasserin
|4 aut
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|a Ketsa, Saichol
|e verfasserin
|4 aut
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| 700 |
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|a van Doorn, Wouter G
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 188(2015) vom: 01. Sept., Seite 37-43
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:188
|g year:2015
|g day:01
|g month:09
|g pages:37-43
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|u http://dx.doi.org/10.1016/j.jplph.2015.02.013
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