Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.

<h4>Background</h4>Plant photoreceptors, phytochromes and cryptochromes, regulate many aspects of development and growth, such as seed germination, stem elongation, seedling de-etiolation, cotyledon opening, flower induction and circadian rhythms. There are several pieces of evidence of...

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Autores principales:	Paolo Facella, Loretta Daddiego, Giovanni Giuliano, Gaetano Perrotta
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b5c35457b9b54527be778a1c3cc4b433
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spelling	oai:doaj.org-article:b5c35457b9b54527be778a1c3cc4b4332021-11-18T07:30:09ZGibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.1932-620310.1371/journal.pone.0030121https://doaj.org/article/b5c35457b9b54527be778a1c3cc4b4332012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22272283/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Plant photoreceptors, phytochromes and cryptochromes, regulate many aspects of development and growth, such as seed germination, stem elongation, seedling de-etiolation, cotyledon opening, flower induction and circadian rhythms. There are several pieces of evidence of interaction between photoreceptors and phyto-hormones in all of these physiological processes, but little is known about molecular and genetic mechanisms underlying hormone-photoreceptor crosstalk.<h4>Methodology/principal findings</h4>In this work, we investigated the molecular effects of exogenous phyto-hormones to photoreceptor gene transcripts of tomato wt, as well as transgenic and mutant lines with altered cryptochromes, by monitoring day/night transcript oscillations. GA and auxin alter the diurnal expression level of different photoreceptor genes in tomato, especially in mutants that lack a working form of cryptochrome 1a: in those mutants the expression of some (IAA) or most (GA) photoreceptor genes is down regulated by these hormones.<h4>Conclusions/significance</h4>Our results highlight the presence of molecular relationships among cryptochrome 1a protein, hormones, and photoreceptors' gene expression in tomato, suggesting that manipulation of cryptochromes could represent a good strategy to understand in greater depth the role of phyto-hormones in the plant photoperceptive mechanism.Paolo FacellaLoretta DaddiegoGiovanni GiulianoGaetano PerrottaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 1, p e30121 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Paolo Facella Loretta Daddiego Giovanni Giuliano Gaetano Perrotta Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.
description	<h4>Background</h4>Plant photoreceptors, phytochromes and cryptochromes, regulate many aspects of development and growth, such as seed germination, stem elongation, seedling de-etiolation, cotyledon opening, flower induction and circadian rhythms. There are several pieces of evidence of interaction between photoreceptors and phyto-hormones in all of these physiological processes, but little is known about molecular and genetic mechanisms underlying hormone-photoreceptor crosstalk.<h4>Methodology/principal findings</h4>In this work, we investigated the molecular effects of exogenous phyto-hormones to photoreceptor gene transcripts of tomato wt, as well as transgenic and mutant lines with altered cryptochromes, by monitoring day/night transcript oscillations. GA and auxin alter the diurnal expression level of different photoreceptor genes in tomato, especially in mutants that lack a working form of cryptochrome 1a: in those mutants the expression of some (IAA) or most (GA) photoreceptor genes is down regulated by these hormones.<h4>Conclusions/significance</h4>Our results highlight the presence of molecular relationships among cryptochrome 1a protein, hormones, and photoreceptors' gene expression in tomato, suggesting that manipulation of cryptochromes could represent a good strategy to understand in greater depth the role of phyto-hormones in the plant photoperceptive mechanism.
format	article
author	Paolo Facella Loretta Daddiego Giovanni Giuliano Gaetano Perrotta
author_facet	Paolo Facella Loretta Daddiego Giovanni Giuliano Gaetano Perrotta
author_sort	Paolo Facella
title	Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.
title_short	Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.
title_full	Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.
title_fullStr	Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.
title_full_unstemmed	Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.
title_sort	gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via cry1a in tomato.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/b5c35457b9b54527be778a1c3cc4b433
work_keys_str_mv	AT paolofacella gibberellinandauxininfluencethediurnaltranscriptionpatternofphotoreceptorgenesviacry1aintomato AT lorettadaddiego gibberellinandauxininfluencethediurnaltranscriptionpatternofphotoreceptorgenesviacry1aintomato AT giovannigiuliano gibberellinandauxininfluencethediurnaltranscriptionpatternofphotoreceptorgenesviacry1aintomato AT gaetanoperrotta gibberellinandauxininfluencethediurnaltranscriptionpatternofphotoreceptorgenesviacry1aintomato
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Gibberellin and auxin influence the diurnal transcription pattern of photoreceptor genes via CRY1a in tomato.

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