A genetic framework for flowering-time pathways in Citrus spp.

Floral transition is one the most drastic changes occurring during the life cycle of a plant. The shoot apical meristem switches from the production of leaves with associated secondary shoot meristems to the production of flower meristems. This transition is abrupt and generally irreversible, sugges...

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Main Authors: Marcelo Carnier Dornelas, Raquel Luciana Boscariol Camargo, Luciana Harumi Morimoto Figueiredo, Marco Aurélio Takita
Format: Article
Language:English
Published: Sociedade Brasileira de Genética 2007-01-01
Series:Genetics and Molecular Biology
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500006
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author Marcelo Carnier Dornelas
Raquel Luciana Boscariol Camargo
Luciana Harumi Morimoto Figueiredo
Marco Aurélio Takita
author_facet Marcelo Carnier Dornelas
Raquel Luciana Boscariol Camargo
Luciana Harumi Morimoto Figueiredo
Marco Aurélio Takita
author_sort Marcelo Carnier Dornelas
collection DOAJ
description Floral transition is one the most drastic changes occurring during the life cycle of a plant. The shoot apical meristem switches from the production of leaves with associated secondary shoot meristems to the production of flower meristems. This transition is abrupt and generally irreversible, suggesting it is regulated by a robust gene regulatory network capable of driving sharp transitions. The moment at which this transition occurs is precisely determined by environmental and endogenous signals. A large number of genes acting within these pathways have been cloned in model herbaceous plants such as Arabidopsis thaliana. In this paper, we report the results of our search in the Citrus expressed sequence tag (CitEST) database for expressed sequence tags (ESTs) showing sequence homology with known elements of flowering-time pathways. We have searched all sequence clusters in the CitEST database and identified more than one hundred Citrus spp sequences that codify putative conserved elements of the autonomous, vernalization, photoperiod response and gibberelic acid-controlled flowering-time pathways. Additionally, we have characterized in silico putative members of the Citrus spp homologs to the Arabidopsis CONSTANS family of transcription factors.
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spelling doaj.art-50ae43cec916476e9fc7f6c7022d009b2022-12-21T22:38:12ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1415-47571678-46852007-01-0130376977910.1590/S1415-47572007000500006A genetic framework for flowering-time pathways in Citrus spp.Marcelo Carnier DornelasRaquel Luciana Boscariol CamargoLuciana Harumi Morimoto FigueiredoMarco Aurélio TakitaFloral transition is one the most drastic changes occurring during the life cycle of a plant. The shoot apical meristem switches from the production of leaves with associated secondary shoot meristems to the production of flower meristems. This transition is abrupt and generally irreversible, suggesting it is regulated by a robust gene regulatory network capable of driving sharp transitions. The moment at which this transition occurs is precisely determined by environmental and endogenous signals. A large number of genes acting within these pathways have been cloned in model herbaceous plants such as Arabidopsis thaliana. In this paper, we report the results of our search in the Citrus expressed sequence tag (CitEST) database for expressed sequence tags (ESTs) showing sequence homology with known elements of flowering-time pathways. We have searched all sequence clusters in the CitEST database and identified more than one hundred Citrus spp sequences that codify putative conserved elements of the autonomous, vernalization, photoperiod response and gibberelic acid-controlled flowering-time pathways. Additionally, we have characterized in silico putative members of the Citrus spp homologs to the Arabidopsis CONSTANS family of transcription factors.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500006reproductive developmentflowering-time genesreproductionphotoperiodCONSTANS
spellingShingle Marcelo Carnier Dornelas
Raquel Luciana Boscariol Camargo
Luciana Harumi Morimoto Figueiredo
Marco Aurélio Takita
A genetic framework for flowering-time pathways in Citrus spp.
Genetics and Molecular Biology
reproductive development
flowering-time genes
reproduction
photoperiod
CONSTANS
title A genetic framework for flowering-time pathways in Citrus spp.
title_full A genetic framework for flowering-time pathways in Citrus spp.
title_fullStr A genetic framework for flowering-time pathways in Citrus spp.
title_full_unstemmed A genetic framework for flowering-time pathways in Citrus spp.
title_short A genetic framework for flowering-time pathways in Citrus spp.
title_sort genetic framework for flowering time pathways in citrus spp
topic reproductive development
flowering-time genes
reproduction
photoperiod
CONSTANS
url http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500006
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