Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: He, Zhimin, Zhao, Xiaoying, Kong, Fanna, Zuo, Zecheng, Liu, Xuanming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2016
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
_version_ 1782413414216237056
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
work_keys_str_mv AT hezhimin tcp2positivelyregulateshy5hyhandphotomorphogenesisinarabidopsis
AT zhaoxiaoying tcp2positivelyregulateshy5hyhandphotomorphogenesisinarabidopsis
AT kongfanna tcp2positivelyregulateshy5hyhandphotomorphogenesisinarabidopsis
AT zuozecheng tcp2positivelyregulateshy5hyhandphotomorphogenesisinarabidopsis
AT liuxuanming tcp2positivelyregulateshy5hyhandphotomorphogenesisinarabidopsis