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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2018.03.022
|2 doi
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|a pubmed24n0941.xml
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|a (DE-627)NLM282540199
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|a (NLM)29604522
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|a (PII)S0981-9428(18)30145-1
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
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|a da Costa, Cibele Tesser
|e verfasserin
|4 aut
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| 245 |
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|a Comparative adventitious root development in pre-etiolated and flooded Arabidopsis hypocotyls exposed to different auxins
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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
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|2 rdacarrier
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|a Date Completed 26.07.2018
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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 © 2018 Elsevier Masson SAS. All rights reserved.
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|a Adventitious roots (ARs) emerge from stems, leaves or hypocotyls, being strategic for clonal propagation. ARs may develop spontaneously, upon environmental stress or hormonal treatment. Auxins strongly influence AR development (ARD), depending on concentration and kind. However, the role of different types of auxin is rarely compared at the molecular level. Rooting triggered by light exposure and flooding was examined in intact etiolated Arabidopsis thaliana hypocotyls treated with distinct auxin types. Morphological aspects, rooting-related gene expression profiles, and IAA immunolocalization were recorded. NAA and 2,4-D effects were highly dose-dependent; at higher concentrations NAA inhibited root growth and 2,4-D promoted callus formation. NAA yielded the highest number of roots, but inhibited elongation. IAA increased the number of roots with less interference in elongation, yielding the best overall rooting response. IAA was localized close to the tissues of root origin. Auxin stimulated ARD was marked by increased expression of PIN1 and GH3.3. NAA treatment induced expression of CYCB1, GH3.6 and ARF8. These NAA-specific responses may be associated with the development of numerous shorter roots. In contrast, expression of the auxin action inhibitor IAA28 was induced by IAA. Increased PIN1 expression indicated the relevance of auxin efflux transport for focusing in target cells, whereas GH3.3 suggested tight control of auxin homeostasis. IAA28 increased expression during IAA-induced ARD differs from what was previously reported for lateral root development, pointing to yet another possible difference in the molecular programs of these two developmental processes
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|a Comparative Study
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|a Journal Article
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|a Adventitious rooting
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|a Arabidopsis
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|a Auxin
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|a Auxin-related genes
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|a Gene expression
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|a Arabidopsis Proteins
|2 NLM
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| 650 |
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|a Indoleacetic Acids
|2 NLM
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| 700 |
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|a Gaeta, Marcos Letaif
|e verfasserin
|4 aut
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| 700 |
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|a de Araujo Mariath, Jorge Ernesto
|e verfasserin
|4 aut
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| 700 |
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|a Offringa, Remko
|e verfasserin
|4 aut
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| 700 |
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|a Fett-Neto, Arthur Germano
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 127(2018) vom: 01. Juni, Seite 161-168
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
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|g volume:127
|g year:2018
|g day:01
|g month:06
|g pages:161-168
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|u http://dx.doi.org/10.1016/j.plaphy.2018.03.022
|3 Volltext
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