Voichek Y., Hurieva B., Michaud Caroline, Schmücker A., Vergara Z., Desvoyes B., Gutierrez C., Nizhynska V., Jaegle B., Borg M., Berger F., Nordborg M., Ingouff M. (2023). Cell cycle status of male and female gametes during Arabidopsis reproduction. Plant Physiology, [Early access], p. [10 p.]. ISSN 0032-0889.
Titre du document
Cell cycle status of male and female gametes during Arabidopsis reproduction
Année de publication
2023
Auteurs
Voichek Y., Hurieva B., Michaud Caroline, Schmücker A., Vergara Z., Desvoyes B., Gutierrez C., Nizhynska V., Jaegle B., Borg M., Berger F., Nordborg M., Ingouff M.
Source
Plant Physiology, 2023,
[Early access], p. [10 p.] ISSN 0032-0889
Fertilization in Arabidopsis (Arabidopsis thaliana) is a highly coordinated process that begins with a pollen tube delivering the 2 sperm cells into the embryo sac. Each sperm cell can then fertilize either the egg or the central cell to initiate embryo or endosperm development, respectively. The success of this double fertilization process requires a tight cell cycle synchrony between the male and female gametes to allow karyogamy (nuclei fusion). However, the cell cycle status of the male and female gametes during fertilization remains elusive as DNA quantification and DNA replication assays have given conflicting results. Here, to reconcile these results, we quantified the DNA replication state by DNA sequencing and performed microscopic analyses of fluorescent markers covering all phases of the cell cycle. We show that male and female Arabidopsis gametes are both arrested prior to DNA replication at maturity and initiate their DNA replication only during fertilization. Mature male and female Arabidopsis gametes arrest their cell cycle before DNA replication, which only starts during fertilization.
Plan de classement
Sciences du monde végétal [076]
Localisation
Fonds IRD [F B010089654]
Identifiant IRD
fdi:010089654
