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231224s2015 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2014.11.012
|2 doi
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|a pubmed24n0818.xml
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|a (DE-627)NLM245600779
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|a (NLM)25615607
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|a (PII)S0176-1617(14)00359-9
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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 Martínez-de la Cruz, Enrique
|e verfasserin
|4 aut
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|a Auxins differentially regulate root system architecture and cell cycle protein levels in maize seedlings
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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
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|2 rdacarrier
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|a Date Completed 20.01.2016
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|a Date Revised 10.04.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2014 Elsevier GmbH. All rights reserved.
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|a Maize (Zea mays) root system architecture has a complex organization, with adventitious and lateral roots determining its overall absorptive capacity. To generate basic information about the earlier stages of root development, we compared the post-embryonic growth of maize seedlings germinated in water-embedded cotton beds with that of plants obtained from embryonic axes cultivated in liquid medium. In addition, the effect of four different auxins, namely indole-3-acetic acid (IAA), 1-naphthaleneacetic acid (NAA), indole-3-butyric acid (IBA) and 2,4-dichlorophenoxyacetic acid (2,4-D) on root architecture and levels of the heat shock protein HSP101 and the cell cycle proteins CKS1, CYCA1 and CDKA1 were analyzed. Our data show that during the first days after germination, maize seedlings develop several root types with a simultaneous and/or continuous growth. The post-embryonic root development started with the formation of the primary root (PR) and seminal scutellar roots (SSR) and then continued with the formation of adventitious crown roots (CR), brace roots (BR) and lateral roots (LR). Auxins affected root architecture in a dose-response fashion; whereas NAA and IBA mostly stimulated crown root formation, 2,4-D showed a strong repressing effect on growth. The levels of HSP101, CKS1, CYCA1 and CDKA in root and leaf tissues were differentially affected by auxins and interestingly, HSP101 registered an auxin-inducible and root specific expression pattern. Taken together, our results show the timing of early branching patterns of maize and indicate that auxins regulate root development likely through modulation of the HSP101 and cell cycle proteins
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Auxins
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|a Cell cycle
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|a Cyclins
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|a Maize
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|a Root development
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|a Cell Cycle Proteins
|2 NLM
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| 650 |
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|a Indoleacetic Acids
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 700 |
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|a García-Ramírez, Elpidio
|e verfasserin
|4 aut
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|a Vázquez-Ramos, Jorge M
|e verfasserin
|4 aut
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|a Reyes de la Cruz, Homero
|e verfasserin
|4 aut
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| 700 |
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|a López-Bucio, José
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 176(2015) vom: 15. März, Seite 147-56
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:176
|g year:2015
|g day:15
|g month:03
|g pages:147-56
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|u http://dx.doi.org/10.1016/j.jplph.2014.11.012
|3 Volltext
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