Agritrop
Home

ASL/LBD Phylogeny Suggests that Genetic Mechanisms of Root Initiation Downstream of Auxin Are Distinct in Lycophytes and Euphyllophytes

Coudert Yoan, Dievart Anne, Droc Gaëtan, Gantet Pascal. 2013. ASL/LBD Phylogeny Suggests that Genetic Mechanisms of Root Initiation Downstream of Auxin Are Distinct in Lycophytes and Euphyllophytes. Molecular Biology and Evolution, 30 (3) : pp. 569-572.

Journal article ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
document_567321.pdf

Télécharger (490kB)

Quartile : Outlier, Sujet : BIOCHEMISTRY & MOLECULAR BIOLOGY / Quartile : Outlier, Sujet : GENETICS & HEREDITY / Quartile : Outlier, Sujet : EVOLUTIONARY BIOLOGY

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Anthropologie-Ethnologie; Psychologie-éthologie-ergonomie

Abstract : Paleobotanical studies suggest that roots evolved at least twice independently during land plant diversification, once in lycophytes and once in euphyllophytes. Auxin promotes postembryonic root initiation in both groups but from different cell types. In several euphyllophytes, such as Arabidopsis, rice, and maize, AS2/LOB-domain (ASL/LBD) proteins act directly downstream of auxin and are conserved elements necessary for root initiation. It is currently unknown whether similar or different genetic mechanisms act downstream of auxin for root initiation in lycophytes and euphyllophytes. We searched for ASL/LBD proteins in genome sequences spanning the tree of life to retrace their evolutionary history. We performed a phylogenetic analysis of ASL/LBD proteins and mapped the functions of all characterized ASL/LBD onto the phylogenetic trees.We identified a clade specifically associated with root development, which includes no lycophyte sequence. This points toward the existence of distinct genetic mechanisms downstream of auxin for root initiation in lycophytes and euphyllophytes. (Résumé d'auteur)

Mots-clés Agrovoc : Plante, Botanique, Physiologie végétale, Organogénèse, Racine, Phylogénie, Auxine, Génétique, Évolution, Zea mays, Oryza, Arabidopsis

Mots-clés complémentaires : Paléobotanique

Classification Agris : F70 - Plant taxonomy and geography

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

  • Coudert Yoan, UM2 (FRA)
  • Dievart Anne, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0001-9460-4638
  • Droc Gaëtan, CIRAD-BIOS-UMR AGAP (FRA)
  • Gantet Pascal, UM2 (VNM)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/567321/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2020-10-26 ]