Diversification of cytokinin phosphotransfer signaling genes in Medicago truncatula and other legume genomes - Université Paris Cité Accéder directement au contenu
Article Dans Une Revue BMC Genomics Année : 2019

Diversification of cytokinin phosphotransfer signaling genes in Medicago truncatula and other legume genomes

Résumé

Legumes can establish on nitrogen-deprived soils a symbiotic interaction with Rhizobia bacteria, leading to the formation of nitrogen-fixing root nodules. Cytokinin phytohormones are critical for triggering root cortical cell divisions at the onset of nodule initiation. Cytokinin signaling is based on a Two-Component System (TCS) phosphorelay cascade, involving successively Cytokinin-binding Histidine Kinase receptors, phosphorelay proteins shuttling between the cytoplasm and the nucleus, and Type-B Response Regulator (RRB) transcription factors activating the expression of cytokinin primary response genes. Among those, Type-A Response Regulators (RRA) exert a negative feedback on the TCS signaling. To determine whether the legume plant nodulation capacity is linked to specific features of TCS proteins, a genome-wide identification was performed in six legume genomes (Cajanus cajan, pigeonpea; Cicer arietinum, chickpea; Glycine max, soybean; Phaseolus vulgaris, common bean; Lotus japonicus; Medicago truncatula). The diversity of legume TCS proteins was compared to the one found in two non-nodulating species, Arabidopsis thaliana and Vitis vinifera, which are references for functional analyses of TCS components and phylogenetic analyses, respectively.
Fichier principal
Vignette du fichier
publi19-lipm-007_1.pdf (3.17 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02329031 , version 1 (26-05-2020)

Licence

Paternité

Identifiants

Citer

Sovanna Tan, Frederic Debellé, Pascal Gamas, Florian Frugier, Mathias Brault. Diversification of cytokinin phosphotransfer signaling genes in Medicago truncatula and other legume genomes. BMC Genomics, 2019, 20 (1), pp.373. ⟨10.1186/s12864-019-5724-z⟩. ⟨hal-02329031⟩
36 Consultations
35 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More