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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2008.02674.x
|2 doi
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|a pubmed24n0619.xml
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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 Fernandez-Garcia, N
|e verfasserin
|4 aut
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| 245 |
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|a Role of phi cells and the endodermis under salt stress in Brassica oleracea
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|c 2009
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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 10.02.2009
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a Phi cell layers were discovered in the 19th century in a small number of species, including members of the Brassicaceae family. A mechanical role was first suggested for this structure; however, this has never been demonstrated. The main objective of the present work was to analyse the ultrastructure of phi cells, their influence on ion movement from the cortex to the stele, and their contribution to salt stress tolerance in Brassica oleracea. Transmission electron microscopy and X-ray microanalysis studies were used to analyse the subcellular structure and distribution of ions in phi cells and the endodermis under salt stress. Ion movement was analysed using lanthanum as an apoplastic tracer. The ultrastructural results confirm that phi cells are specialized cells showing cell wall ingrowths in the inner tangential cell walls. X-ray microanalysis confirmed a build-up of sodium. Phi thickenings were lignified and lanthanum moved periplasmically at this level. To the best of our knowledge, this is the first study reporting the possible role of the phi cells as a barrier controlling the movement of ions from the cortex to the stele. Therefore, the phi cell layer and endodermis seem to be regulating ion transport in Brassica oleracea under salt stress
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Lipids
|2 NLM
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|a Lanthanum
|2 NLM
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|a 6I3K30563S
|2 NLM
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|a suberin
|2 NLM
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|a 8072-95-5
|2 NLM
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|a Lignin
|2 NLM
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|a 9005-53-2
|2 NLM
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|a Adenosine Triphosphatases
|2 NLM
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| 650 |
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|a EC 3.6.1.-
|2 NLM
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| 700 |
1 |
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|a Lopez-Perez, L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hernandez, M
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Olmos, E
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 181(2009), 2 vom: Jan., Seite 347-360
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:181
|g year:2009
|g number:2
|g month:01
|g pages:347-360
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