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Functional dissection of the ARGONAUTE7 promoter
ARGONAUTES are the central effector proteins of RNA silencing which bind target transcripts in a small RNA‐guided manner. Arabidopsis thaliana has 10 ARGONAUTE (AGO) genes, with specialized roles in RNA‐directed DNA methylation, post‐transcriptional gene silencing, and antiviral defense. To better u...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6508778/ https://www.ncbi.nlm.nih.gov/pubmed/31245750 http://dx.doi.org/10.1002/pld3.102 |
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author | Hoyer, J. Steen Pruneda‐Paz, Jose L. Breton, Ghislain Hassert, Mariah A. Holcomb, Emily E. Fowler, Halley Bauer, Kaylyn M. Mreen, Jacob Kay, Steve A. Carrington, James C. |
author_facet | Hoyer, J. Steen Pruneda‐Paz, Jose L. Breton, Ghislain Hassert, Mariah A. Holcomb, Emily E. Fowler, Halley Bauer, Kaylyn M. Mreen, Jacob Kay, Steve A. Carrington, James C. |
author_sort | Hoyer, J. Steen |
collection | PubMed |
description | ARGONAUTES are the central effector proteins of RNA silencing which bind target transcripts in a small RNA‐guided manner. Arabidopsis thaliana has 10 ARGONAUTE (AGO) genes, with specialized roles in RNA‐directed DNA methylation, post‐transcriptional gene silencing, and antiviral defense. To better understand specialization among AGO genes at the level of transcriptional regulation we tested a library of 1497 transcription factors for binding to the promoters of AGO1,AGO10, and AGO7 using yeast 1‐hybrid assays. A ranked list of candidate DNA‐binding TFs revealed binding of the AGO7 promoter by a number of proteins in two families: the miR156‐regulated SPL family and the miR319‐regulated TCP family, both of which have roles in developmental timing and leaf morphology. Possible functions for SPL and TCP binding are unclear: we showed that these binding sites are not required for the polar expression pattern of AGO7, nor for the function of AGO7 in leaf shape. Normal AGO7 transcription levels and function appear to depend instead on an adjacent 124‐bp region. Progress in understanding the structure of this promoter may aid efforts to understand how the conserved AGO7‐triggered TAS3 pathway functions in timing and polarity. |
format | Online Article Text |
id | pubmed-6508778 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-65087782019-06-26 Functional dissection of the ARGONAUTE7 promoter Hoyer, J. Steen Pruneda‐Paz, Jose L. Breton, Ghislain Hassert, Mariah A. Holcomb, Emily E. Fowler, Halley Bauer, Kaylyn M. Mreen, Jacob Kay, Steve A. Carrington, James C. Plant Direct Original Research ARGONAUTES are the central effector proteins of RNA silencing which bind target transcripts in a small RNA‐guided manner. Arabidopsis thaliana has 10 ARGONAUTE (AGO) genes, with specialized roles in RNA‐directed DNA methylation, post‐transcriptional gene silencing, and antiviral defense. To better understand specialization among AGO genes at the level of transcriptional regulation we tested a library of 1497 transcription factors for binding to the promoters of AGO1,AGO10, and AGO7 using yeast 1‐hybrid assays. A ranked list of candidate DNA‐binding TFs revealed binding of the AGO7 promoter by a number of proteins in two families: the miR156‐regulated SPL family and the miR319‐regulated TCP family, both of which have roles in developmental timing and leaf morphology. Possible functions for SPL and TCP binding are unclear: we showed that these binding sites are not required for the polar expression pattern of AGO7, nor for the function of AGO7 in leaf shape. Normal AGO7 transcription levels and function appear to depend instead on an adjacent 124‐bp region. Progress in understanding the structure of this promoter may aid efforts to understand how the conserved AGO7‐triggered TAS3 pathway functions in timing and polarity. John Wiley and Sons Inc. 2019-01-02 /pmc/articles/PMC6508778/ /pubmed/31245750 http://dx.doi.org/10.1002/pld3.102 Text en © 2019 The Authors. Plant Direct published by American Society of Plant Biologists, Society for Experimental Biology and John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Hoyer, J. Steen Pruneda‐Paz, Jose L. Breton, Ghislain Hassert, Mariah A. Holcomb, Emily E. Fowler, Halley Bauer, Kaylyn M. Mreen, Jacob Kay, Steve A. Carrington, James C. Functional dissection of the ARGONAUTE7 promoter |
title | Functional dissection of the ARGONAUTE7 promoter |
title_full | Functional dissection of the ARGONAUTE7 promoter |
title_fullStr | Functional dissection of the ARGONAUTE7 promoter |
title_full_unstemmed | Functional dissection of the ARGONAUTE7 promoter |
title_short | Functional dissection of the ARGONAUTE7 promoter |
title_sort | functional dissection of the argonaute7 promoter |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6508778/ https://www.ncbi.nlm.nih.gov/pubmed/31245750 http://dx.doi.org/10.1002/pld3.102 |
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