Article (Scientific journals)
Integrating roots into a whole plant network of flowering time genes in Arabidopsis thaliana
Bouché, Frédéric; D'Aloia, Maria; Tocquin, Pierre et al.
2016In Scientific Reports, 6, p. 29042
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Keywords :
flowering; roots; Arabidopsis
Abstract :
[en] Molecular data concerning the involvement of roots in the genetic pathways regulating floral transition are lacking. In this study, we performed global analyses of the root transcriptome in Arabidopsis in order to identify flowering time genes that are expressed in the roots and genes that are differentially expressed in the roots during the induction of flowering. Data mining of public microarray experiments uncovered that about 200 genes whose mutations are reported to alter flowering time are expressed in the roots (i.e. were detected in more than 50% of the microarrays). However, only a few flowering integrator genes passed the analysis cutoff. Comparison of root transcriptome in short days and during synchronized induction of flowering by a single 22-h long day revealed that 595 genes were differentially expressed. Enrichment analyses of differentially expressed genes in root tissues, gene ontology categories, and cis-regulatory elements converged towards sugar signaling. We concluded that roots are integrated in systemic signaling, whereby carbon supply coordinates growth at the whole plant level during the induction of flowering. This coordination could involve the root circadian clock and cytokinin biosynthesis as a feed forward loop towards the shoot.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Bouché, Frédéric ;  Université de Liège - ULiège > Doct. sc. (bioch., biol. mol.&cell., bioinf.&mod.-Bologne)
D'Aloia, Maria
Tocquin, Pierre  ;  Université de Liège > Département des sciences de la vie > Physiologie végétale
Lobet, Guillaume ;  Université de Liège > Département des sciences de la vie > Physiologie végétale
Detry, Nathalie ;  Université de Liège > Département des sciences de la vie > Département des sciences de la vie
Périlleux, Claire ;  Université de Liège > Département des sciences de la vie > Physiologie végétale
Language :
English
Title :
Integrating roots into a whole plant network of flowering time genes in Arabidopsis thaliana
Publication date :
29 June 2016
Journal title :
Scientific Reports
eISSN :
2045-2322
Publisher :
Nature Publishing Group, London, United Kingdom
Volume :
6
Pages :
29042
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 June 2016

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