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TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis
Light regulates plant growth and development via multiple photoreceptors including phytochromes and cryptochromes. Although the functions of photoreceptors have been studied extensively, questions remain regarding the involvement of cryptochromes in photomorphogenesis. In this study, we identified a...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4737077/ https://www.ncbi.nlm.nih.gov/pubmed/26596765 http://dx.doi.org/10.1093/jxb/erv495 |
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author | He, Zhimin Zhao, Xiaoying Kong, Fanna Zuo, Zecheng Liu, Xuanming |
author_facet | He, Zhimin Zhao, Xiaoying Kong, Fanna Zuo, Zecheng Liu, Xuanming |
author_sort | He, Zhimin |
collection | PubMed |
description | Light regulates plant growth and development via multiple photoreceptors including phytochromes and cryptochromes. Although the functions of photoreceptors have been studied extensively, questions remain regarding the involvement of cryptochromes in photomorphogenesis. In this study, we identified a protein, TEOSINTE-LIKE1, CYCLOIDEA, and PROLIFERATING CELL FACTOR 2 (TCP2), which interacts with the cryptochrome 1 (CRY1) protein in yeast and plant cells via the N-terminal domains of both proteins. Transgenic plants overexpressing TCP2 displayed a light-dependent short hypocotyl phenotype, especially in response to blue light. Moreover, light affected TCP2 expression in a wavelength-dependent manner and TCP2 positively regulates mRNA expression of HYH and HY5. These results support the hypothesis that TCP2 is a transcription activator which acts downstream of multiple photoreceptors, including CRY1. |
format | Online Article Text |
id | pubmed-4737077 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-47370772016-02-03 TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis He, Zhimin Zhao, Xiaoying Kong, Fanna Zuo, Zecheng Liu, Xuanming J Exp Bot Research Paper Light regulates plant growth and development via multiple photoreceptors including phytochromes and cryptochromes. Although the functions of photoreceptors have been studied extensively, questions remain regarding the involvement of cryptochromes in photomorphogenesis. In this study, we identified a protein, TEOSINTE-LIKE1, CYCLOIDEA, and PROLIFERATING CELL FACTOR 2 (TCP2), which interacts with the cryptochrome 1 (CRY1) protein in yeast and plant cells via the N-terminal domains of both proteins. Transgenic plants overexpressing TCP2 displayed a light-dependent short hypocotyl phenotype, especially in response to blue light. Moreover, light affected TCP2 expression in a wavelength-dependent manner and TCP2 positively regulates mRNA expression of HYH and HY5. These results support the hypothesis that TCP2 is a transcription activator which acts downstream of multiple photoreceptors, including CRY1. Oxford University Press 2016-02 2015-11-23 /pmc/articles/PMC4737077/ /pubmed/26596765 http://dx.doi.org/10.1093/jxb/erv495 Text en © The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology. http://creativecommons.org/licenses/by/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Paper He, Zhimin Zhao, Xiaoying Kong, Fanna Zuo, Zecheng Liu, Xuanming TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis |
title | TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis |
title_full | TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis |
title_fullStr | TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis |
title_full_unstemmed | TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis |
title_short | TCP2 positively regulates HY5/HYH and photomorphogenesis in Arabidopsis |
title_sort | tcp2 positively regulates hy5/hyh and photomorphogenesis in arabidopsis |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4737077/ https://www.ncbi.nlm.nih.gov/pubmed/26596765 http://dx.doi.org/10.1093/jxb/erv495 |
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