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Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes

Plants have evolved several mechanisms for sensing increased irradiance, involving signal perception by photoreceptors (cryptochromes), and subsequent biochemical (reactive oxygen species, ROS) and metabolic clues to transmit the signals. This results in the increased expression of heat‐shock respon...

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Autores principales: van Rooijen, Roxanne, Harbinson, Jeremy, Aarts, Mark G. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6508758/
https://www.ncbi.nlm.nih.gov/pubmed/31245733
http://dx.doi.org/10.1002/pld3.69
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author van Rooijen, Roxanne
Harbinson, Jeremy
Aarts, Mark G. M.
author_facet van Rooijen, Roxanne
Harbinson, Jeremy
Aarts, Mark G. M.
author_sort van Rooijen, Roxanne
collection PubMed
description Plants have evolved several mechanisms for sensing increased irradiance, involving signal perception by photoreceptors (cryptochromes), and subsequent biochemical (reactive oxygen species, ROS) and metabolic clues to transmit the signals. This results in the increased expression of heat‐shock response genes and of the transcription factor LONG HYPOCOTYL 5 (HY5, mediated by the cryptochrome photoreceptor 1, CRY1). Here, we show the existence of another response pathway in Arabidopsis. This pathway evokes the SPX1‐mediated expression activation of the transcription factor PHR1 and leads to the expression of several galactolipid biosynthesis genes. Gene expression analysis of accessions Col‐0, Ga‐0, and Ts‐1, showed activated expression of the SPX1/PHR1‐mediated gene expression activation pathway acting on galactolipids biosynthesis genes in both Ga‐0 and Col‐0, but not in Ts‐1. The activation of the SPX1/PHR1‐mediated response pathway can be associated with lower photosynthesis efficiency in Ts‐1, compared to Col‐0 and Ga‐0. Besides the accession‐associated activation of the SPX1/PHR1‐mediated response pathway, comparing gene expression in the accessions showed stronger activation of several heat responsive genes in Ga‐0, and the opposite in Ts‐1, when compared to Col‐0, in line with the differences in their efficiency of photosynthesis. We conclude that natural variation in activation of both heat responsive genes and of galactolipids biosynthesis genes contribute to the variation in photosynthesis efficiency in response to irradiance increase.
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spelling pubmed-65087582019-06-26 Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes van Rooijen, Roxanne Harbinson, Jeremy Aarts, Mark G. M. Plant Direct Original Research Plants have evolved several mechanisms for sensing increased irradiance, involving signal perception by photoreceptors (cryptochromes), and subsequent biochemical (reactive oxygen species, ROS) and metabolic clues to transmit the signals. This results in the increased expression of heat‐shock response genes and of the transcription factor LONG HYPOCOTYL 5 (HY5, mediated by the cryptochrome photoreceptor 1, CRY1). Here, we show the existence of another response pathway in Arabidopsis. This pathway evokes the SPX1‐mediated expression activation of the transcription factor PHR1 and leads to the expression of several galactolipid biosynthesis genes. Gene expression analysis of accessions Col‐0, Ga‐0, and Ts‐1, showed activated expression of the SPX1/PHR1‐mediated gene expression activation pathway acting on galactolipids biosynthesis genes in both Ga‐0 and Col‐0, but not in Ts‐1. The activation of the SPX1/PHR1‐mediated response pathway can be associated with lower photosynthesis efficiency in Ts‐1, compared to Col‐0 and Ga‐0. Besides the accession‐associated activation of the SPX1/PHR1‐mediated response pathway, comparing gene expression in the accessions showed stronger activation of several heat responsive genes in Ga‐0, and the opposite in Ts‐1, when compared to Col‐0, in line with the differences in their efficiency of photosynthesis. We conclude that natural variation in activation of both heat responsive genes and of galactolipids biosynthesis genes contribute to the variation in photosynthesis efficiency in response to irradiance increase. John Wiley and Sons Inc. 2018-07-10 /pmc/articles/PMC6508758/ /pubmed/31245733 http://dx.doi.org/10.1002/pld3.69 Text en © 2018 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
van Rooijen, Roxanne
Harbinson, Jeremy
Aarts, Mark G. M.
Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
title Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
title_full Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
title_fullStr Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
title_full_unstemmed Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
title_short Photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
title_sort photosynthetic response to increased irradiance correlates to variation in transcriptional response of lipid‐remodeling and heat‐shock genes
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6508758/
https://www.ncbi.nlm.nih.gov/pubmed/31245733
http://dx.doi.org/10.1002/pld3.69
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AT aartsmarkgm photosyntheticresponsetoincreasedirradiancecorrelatestovariationintranscriptionalresponseoflipidremodelingandheatshockgenes