The NGATHA-like Genes DPA4 and SOD7 Are Not Required for Stem Cell Specification during Embryo Development in Arabidopsis thaliana - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Molecular Sciences Année : 2022

The NGATHA-like Genes DPA4 and SOD7 Are Not Required for Stem Cell Specification during Embryo Development in Arabidopsis thaliana

Antoine Nicolas

Résumé

In plants, stem cells are embedded in structures called meristems. Meristems can be formed either during embryogenesis or during the plant’s life such as, for instance, axillary meristems. While the regulation of the stem cell population in an established meristem is well described, how it is initiated in newly formed meristems is less well understood. Recently, two transcription factors of the NGATHA-like family, DEVELOPMENT-RELATED PcG TARGET IN THE APEX4 (DPA4)/NGAL3 and SUPPRESSOR OF DA1-1 7 (SOD7)/NGAL2 have been shown to facilitate de novo stem cell initiation in Arabidopsis thaliana axillary meristems. Here, we tested whether the DPA4 and SOD7 genes had a similar role during stem cell formation in embryo shoot apical meristems. Using DPA4 and SOD7 reporter lines, we characterized the expression pattern of these genes during embryo development, revealing only a partial overlap with the stem cell population. In addition, we showed that the expression of a stem cell reporter was not modified in dpa4-2 sod7-2 double mutant embryos compared to the wild type. Together, these observations suggest that DPA4 and SOD7 are not required for stem cell specification during embryo shoot apical meristem initiation. This work stresses the difference in the regulatory network leading to meristem formation during the embryonic and post-embryonic phases.

Domaines

Morphogenèse
Fichier principal
Vignette du fichier
ijms-23-12007.pdf (10.92 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03847306 , version 1 (31-01-2024)

Licence

Paternité

Identifiants

Citer

Antoine Nicolas, Patrick Laufs. The NGATHA-like Genes DPA4 and SOD7 Are Not Required for Stem Cell Specification during Embryo Development in Arabidopsis thaliana. International Journal of Molecular Sciences, 2022, 23 (19), pp.12007. ⟨10.3390/ijms231912007⟩. ⟨hal-03847306⟩
50 Consultations
1 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More