Titre :

What is the potential impact of genetic divergence of plastid ribosomal genes between Silene nutans lineages in hybrids? An in silico approach using the 3D structure of the plastid ribosome

Auteur(s) :

Postel, Zoé [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Mauri, Theo [Auteur]
1001889|||Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 [UGSF]
Lensink, Marc [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Touzet, Pascal [Auteur]
Évolution, Écologie et Paléontologie (Evo Eco Paleo) - UMR 8198

Titre de la revue :

Frontiers in Plant Science

Numéro :

14

Éditeur :

Frontiers

Date de publication :

2023-03-08

ISSN :

1664-462X

Mot(s)-clé(s) en anglais :

plastid-nuclear incompatibilities
plastid ribosome
protein structure
protein-protein interaction
ribosomal gene evolution

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Génétique/Génétique des plantes
Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Biologie structurale [q-bio.BM]

Résumé en anglais : [en]

Introduction Following the integration of cyanobacteria into the eukaryotic cells, many genes were transferred from the plastid to the nucleus. As a result, plastid complexes are encoded both by plastid and nuclear genes. ...
Lire la suite >Introduction Following the integration of cyanobacteria into the eukaryotic cells, many genes were transferred from the plastid to the nucleus. As a result, plastid complexes are encoded both by plastid and nuclear genes. Tight co-adaptation is required between these genes as plastid and nuclear genomes differ in several characteristics, such as mutation rate and inheritance patterns. Among these are complexes from the plastid ribosome, composed of two main subunits: a large and a small one, both composed of nuclear and plastid gene products. This complex has been identified as a potential candidate for sheltering plastid–nuclear incompatibilities in a Caryophyllaceae species, Silene nutans. This species is composed of four genetically differentiated lineages, which exhibit hybrid breakdown when interlineage crosses are conducted. As this complex is composed of numerous interacting plastid–nuclear gene pairs, in the present study, the goal was to reduce the number of gene pairs that could induce such incompatibilities.Method We used the previously published 3D structure of the spinach ribosome to further elucidate which of the potential gene pairs might disrupt plastid–nuclear interactions within this complex. After modeling the impact of the identified mutations on the 3D structure, we further focused on one strongly mutated plastid–nuclear gene pair: rps11–rps21. We used the centrality measure of the mutated residues to further understand if the modified interactions and associated modified centralities might be correlated with hybrid breakdown.Results and discussion This study highlights that lineage-specific mutations in essential plastid and nuclear genes might disrupt plastid–nuclear protein interactions of the plastid ribosome and that reproductive isolation correlates with changes in residue centrality values. Because of this, the plastid ribosome might be involved in hybrid breakdown in this system.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Non spécifiée

Vulgarisation :

Non

Projet ANR :

Les transitions de systèmes de reproduction chez les angiosperms et leurs conséquences génomiques

Établissement(s) :

Université de Lille
CNRS

Collections :

• Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Date de dépôt :

2023-11-08T09:36:00Z