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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2015.07.022
|2 doi
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|a pubmed25n0843.xml
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|a (DE-627)NLM253025087
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|a (NLM)26398800
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|a (PII)S0168-9452(15)30028-5
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a de Almeida, Márcia Rodrigues
|e verfasserin
|4 aut
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| 245 |
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|a Comparative transcriptional analysis provides new insights into the molecular basis of adventitious rooting recalcitrance in Eucalyptus
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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 12.07.2016
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|a Date Revised 16.03.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.
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|a Adventitious rooting (AR) is essential in clonal propagation. Eucalyptus globulus is relevant for the cellulose industry due to its low lignin content. However, several useful clones are recalcitrant to AR, often requiring exogenous auxin, adding cost to clonal garden operations. In contrast, E. grandis is an easy-to-root species widely used in clonal forestry. Aiming at contributing to the elucidation of recalcitrance causes in E. globulus, we conducted a comparative analysis with these two species differing in rooting competence, combining gene expression and anatomical techniques. Recalcitrance in E. globulus is reversed by exposure to exogenous indole-3-acetic acid (IAA), which promotes important gene expression modifications in both species. The endogenous content of IAA was significantly higher in E. grandis than in E. globulus. The cambium zone was identified as an active area during AR, concentrating the first cell divisions. Immunolocalization assay showed auxin accumulation in cambium cells, further indicating the importance of this region for rooting. We then performed a cambium zone-specific gene expression analysis during AR using laser microdissection. The results indicated that the auxin-related genes TOPLESS and IAA12/BODENLOS and the cytokinin-related gene ARR1may act as negative regulators of AR, possibly contributing to the hard-to-root phenotype of E. globulus
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Auxin
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|a Gene expression
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|a Laser capture microdissection
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|a Rooting
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|a Indoleacetic Acids
|2 NLM
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|a Plant Growth Regulators
|2 NLM
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|a indoleacetic acid
|2 NLM
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|a 6U1S09C61L
|2 NLM
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|a de Bastiani, Daniela
|e verfasserin
|4 aut
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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 Araújo Mariath, Jorge Ernesto
|e verfasserin
|4 aut
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|a de Costa, Fernanda
|e verfasserin
|4 aut
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|a Retallick, Jeffrey
|e verfasserin
|4 aut
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|a Nolan, Lana
|e verfasserin
|4 aut
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|a Tai, Helen H
|e verfasserin
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|a Strömvik, Martina V
|e verfasserin
|4 aut
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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 science : an international journal of experimental plant biology
|d 1985
|g 239(2015) vom: 20. Okt., Seite 155-65
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnns
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| 773 |
1 |
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|g volume:239
|g year:2015
|g day:20
|g month:10
|g pages:155-65
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|u http://dx.doi.org/10.1016/j.plantsci.2015.07.022
|3 Volltext
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