Adam Hélène auteur aut IRD Jouannic Stefan auteur aut IRD Morcillo Fabienne auteur aut IRD Richaud Frédérique auteur aut IRD Duval Yves auteur aut IRD Tregear James auteur aut IRD text journalArticle eng text/pdf born digital access MADS box genes code for a large family of transcription factors which regulate development in higher plants, notably flower formation. We describe here a study of members of the MADS box gene family in oil palm (Elaeis guineensis Jacq.), a representative of the family Arecaceae and order Arecales, a key group of monocotyledons which has been unreported in previous phylogenetic reconstructions of the different recognized clades of MADS box genes. In this study, 13 oil palm MADS box genes were identified and characterized. They were found to belong to five different subfamilies, namely, the previously defined SQUAMOSA, AGAMOUS, AGAMOUS-like2, DEFICIENS, and GLOBOSA groups. Genes belonging to each of these groups play a critical role in the determination of flower structure as defined by the ABCDE model. The in planta expression profiles of the oil palm MADS box genes were studied by RT-PCR and phylogenetic sequence diversity within individual subfamilies was investigated by comparing their deduced protein sequences with those of other angiosperms. Most of the oil palm sequences studied were observed to group with distinct supported clades within their subfamily. Some unexpected groupings were observed between monocot sequences (including oil palm ones) of non-Poaceae origin, probably illustrating the importance of obtaining adequate taxon representation in monocot molecular phylogenies. specialized MADS box oil palm flower homeotic arecales phylogeny monoecious 076 62 1 15-31 2006 0022 2844 https://www.documentation.ird.fr/hor/fdi:010051896 10.1007/s00239-005-0333-7 0022 2844 [F B010051896] https://www.documentation.ird.fr/hor/fdi:010051896 https://www.documentation.ird.fr/intranet/publi/depot/2011-05-31/010051896.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2006-03-30 2017-08-23 fdi:010051896 fre