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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2012.04248.x
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Bian, Hongwu
|e verfasserin
|4 aut
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|a Distinctive expression patterns and roles of the miRNA393/TIR1 homolog module in regulating flag leaf inclination and primary and crown root growth in rice (Oryza sativa)
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 03.01.2013
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|a Date Revised 16.04.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.
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|a • MicroRNA (miRNA)-mediated regulation of auxin signaling components plays a critical role in plant development. miRNA expression and functional diversity contribute to the complexity of regulatory networks of miRNA/target modules. • This study functionally characterizes two members of the rice (Oryza sativa) miR393 family and their target genes, OsTIR1 and OsAFB2 (AUXIN SIGNALING F-BOX), the two closest homologs of Arabidopsis TRANSPORT INHIBITOR RESPONSE 1 (TIR1). • We found that the miR393 family members possess distinctive expression patterns, with miR393a expressed mainly in the crown and lateral root primordia, as well as the coleoptile tip, and miR393b expressed in the shoot apical meristem. Transgenic plants overexpressing miR393a/b displayed a severe phenotype with hallmarks of altered auxin signaling, mainly including enlarged flag leaf inclination and altered primary and crown root growth. Furthermore, OsAFB2- and OsTIR1-suppressed lines exhibited increased inclination of flag leaves at the booting stage, resembling miR393-overexpressing plants. Moreover, yeast two-hybrid and bimolecular fluorescence complementation assays showed that OsTIR1 and OsAFB2 interact with OsIAA1. • Expression diversification of miRNA393 implies the potential role of miRNA regulation during species evolution. The conserved mechanisms of the miR393/target module indicate the fundamental importance of the miR393-mediated regulation of auxin signal transduction in rice
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a MicroRNAs
|2 NLM
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|a Plant Proteins
|2 NLM
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|a 2,4-Dichlorophenoxyacetic Acid
|2 NLM
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|a 2577AQ9262
|2 NLM
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| 700 |
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|a Xie, Yakun
|e verfasserin
|4 aut
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|a Guo, Fu
|e verfasserin
|4 aut
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|a Han, Ning
|e verfasserin
|4 aut
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|a Ma, Shengyun
|e verfasserin
|4 aut
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| 700 |
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|a Zeng, Zhanghui
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Junhui
|e verfasserin
|4 aut
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|a Yang, Yinong
|e verfasserin
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|a Zhu, Muyuan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 196(2012), 1 vom: 17. Okt., Seite 149-161
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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|g volume:196
|g year:2012
|g number:1
|g day:17
|g month:10
|g pages:149-161
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|u http://dx.doi.org/10.1111/j.1469-8137.2012.04248.x
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