Transcriptional and post-transcriptional regulation of a NAC1 transcription factor in Medicago truncatula roots

Transcriptional and post-transcriptional regulation of a NAC1 transcription factor in Medicago truncatula roots

© 2011 The Authors. New Phytologist © 2011 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 191(2011), 3 vom: 16. Aug., Seite 647-661
1. Verfasser: D'haeseleer, Katrien (VerfasserIn)
Weitere Verfasser: Den Herder, Griet, Laffont, Carole, Plet, Julie, Mortier, Virginie, Lelandais-Brière, Christine, De Bodt, Stefanie, De Keyser, Annick, Crespi, Martin, Holsters, Marcelle, Frugier, Florian, Goormachtig, Sofie
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Arabidopsis Proteins Indoleacetic Acids MicroRNAs NAC1 protein, Arabidopsis Plant Proteins RNA, Plant Recombinant Fusion Proteins Trans-Activators Transcription Factors
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245 1 0 |a Transcriptional and post-transcriptional regulation of a NAC1 transcription factor in Medicago truncatula roots 
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520 |a • Legume roots develop two types of lateral organs, lateral roots and nodules. Nodules develop as a result of a symbiotic interaction with rhizobia and provide a niche for the bacteria to fix atmospheric nitrogen for the plant. • The Arabidopsis NAC1 transcription factor is involved in lateral root formation, and is regulated post-transcriptionally by miRNA164 and by SINAT5-dependent ubiquitination. We analyzed in Medicago truncatula the role of the closest NAC1 homolog in lateral root formation and in nodulation. • MtNAC1 shows a different expression pattern in response to auxin than its Arabidopsis homolog and no changes in lateral root number or nodulation were observed in plants affected in MtNAC1 expression. In addition, no interaction was found with SINA E3 ligases, suggesting that post-translational regulation of MtNAC1 does not occur in M. truncatula. Similar to what was found in Arabidopsis, a conserved miR164 target site was retrieved in MtNAC1, which reduced protein accumulation of a GFP-miR164 sensor. Furthermore, miR164 and MtNAC1 show an overlapping expression pattern in symbiotic nodules, and overexpression of this miRNA led to a reduction in nodule number. • This work suggests that regulatory pathways controlling a conserved transcription factor are complex and divergent between M. truncatula and Arabidopsis 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Indoleacetic Acids  |2 NLM 
650 7 |a MicroRNAs  |2 NLM 
650 7 |a NAC1 protein, Arabidopsis  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a RNA, Plant  |2 NLM 
650 7 |a Recombinant Fusion Proteins  |2 NLM 
650 7 |a Trans-Activators  |2 NLM 
650 7 |a Transcription Factors  |2 NLM 
700 1 |a Den Herder, Griet  |e verfasserin  |4 aut 
700 1 |a Laffont, Carole  |e verfasserin  |4 aut 
700 1 |a Plet, Julie  |e verfasserin  |4 aut 
700 1 |a Mortier, Virginie  |e verfasserin  |4 aut 
700 1 |a Lelandais-Brière, Christine  |e verfasserin  |4 aut 
700 1 |a De Bodt, Stefanie  |e verfasserin  |4 aut 
700 1 |a De Keyser, Annick  |e verfasserin  |4 aut 
700 1 |a Crespi, Martin  |e verfasserin  |4 aut 
700 1 |a Holsters, Marcelle  |e verfasserin  |4 aut 
700 1 |a Frugier, Florian  |e verfasserin  |4 aut 
700 1 |a Goormachtig, Sofie  |e verfasserin  |4 aut 
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