Whole plastid genome-based phylogenomics supports ... Catalogue en ligne

Whole plastid genome-based phylogenomics supports an inner placement of the O. insectifera group rather than a basal position in the rapidly diversifying Ophrys genus (Orchidaceae) / Joris A. M. Bertrand in Botany letters, 168 (3) (2021)

[article]
inBotany letters > 168 (3) (2021) . - 452-457

Titre :	Whole plastid genome-based phylogenomics supports an inner placement of the O. insectifera group rather than a basal position in the rapidly diversifying Ophrys genus (Orchidaceae)
Type de document :	Imprimé
Auteurs :	Joris A. M. Bertrand ; Anaïs Gibert ; Christel LLauro ; Olivier Panaud
Année de publication :	2021
Article en page(s) :	452-457
Langues :	Anglais (eng)
Catégories :	[CBNPMP-Thématique] Génétique et écologie (dynamique, démographique, sélection)
Mots-clés :	ophrys insectifera
Résumé :	Some lineages of the orchid genus Ophrys exhibit among the highest diversification rates reported so far. As a consequence of a such intense and rapid evolution, the systematics and taxonomy of this genus remain unclear. A hybrid assembly approach based-on long- and short-read genomic data allowed us to outperform classical methods to successfully assemble whole plastid genomes for two new species of Ophrys: O. aymoninii and O. lutea. Along with three other previously Ophrys plastid genome sequences, we then reconstructed the first whole plastome-based molecular phylogeny including representatives of the three mains recognized Ophrys lineages. Our results support the placement of the O. insectifera clade as sister group of “non-basal Ophrys” rather than a basal position. Our findings corroborate recent results obtained from genomic data (RAD-seq and transcriptomes) but contrast with previous ones. These results therefore confirm that molecular phylogenetic hypotheses based on a limited number of loci (e.g. nrITS, matK, rbcL) may have provided a biased picture of phylogenetic relationships within Ophrys and possibly other plant taxa.
Lien pérenne :	DOI : 10.1080/23818107.2021.1893216
Permalink :	https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=146886

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