The banana (Musa acuminata) genome and the evolution of monocotyledonous plants

Angélique D’Hont, France Denoeud, Jean-Marc Aury, Franc-Christophe Baurens, Françoise Carreel, Olivier Garsmeur, Benjamin Noel, Stéphanie Bocs, Gaëtan Droc, Mathieu Rouard, Corinne Da Silva, Kamel Jabbari, Céline Cardi, Julie Poulain, Marlène Souquet, Karine Labadie, Cyril Jourda, Juliette Lengellé, Marguerite Rodier-Goud, Adriana Alberti, Maria Bernard, Margot Correa, Saravanaraj Ayyampalayam, Michael R Mckain, Jim Leebens-Mack, Diane Burgess, Mike Freeling, Didier Mbéguié-A-Mbéguié, Matthieu Chabannes, Thomas Wicker, Olivier Panaud, Jose Barbosa, Eva Hribova, Pat Heslop-Harrison, Rémy Habas, Ronan Rivallan, Philippe Francois, Claire Poiron, Andrzej Kilian, Dheema Burthia, Christophe Jenny, Frédéric Bakry, Spencer Brown, Valentin Guignon, Gert Kema, Miguel Dita, Cees Waalwijk, Steeve Joseph, Anne Dievart, Olivier Jaillon, Julie Leclercq, Xavier Argout, Eric Lyons, Ana Almeida, Mouna Jeridi, Jaroslav Dolezel, Nicolas Roux, Ange-Marie Risterucci, Jean Weissenbach, Manuel Ruiz, Jean-Christophe Glaszmann, Francis Quétier, Nabila Yahiaoui, Patrick Wincker

Résumé:

Bananas (Musa spp.), including dessert and cooking types, are giant perennial monocotyledonous herbs of the order Zingiberales, a sister group to the well-studied Poales, which include cereals. Bananas are vital for food security in many tropical and subtropical countries and the most popular fruit in industrialized countries. The Musa domestication process started some 7,000 years ago in Southeast Asia. It involved hybridizations between diverse species and subspecies, fostered by human migrations, and selection of diploid and triploid seedless, parthenocarpic hybrids thereafter widely dispersed by vegetative propagation. Half of the current production relies on somaclones derived from a single triploid genotype (Cavendish). Pests and diseases have gradually become adapted, representing an imminent danger for global banana production. Here we describe the draft sequence of the 523-megabase genome of a Musa acuminata doubled-haploid genotype, providing a crucial stepping-stone for genetic improvement of banana. We detected three rounds of whole-genome duplications in the Musa lineage, independently of those previously described in the Poales lineage and the one we detected in the Arecales lineage. This first monocotyledon high-continuity whole-genome sequence reported outside Poales represents an essential bridge for comparative genome analysis in plants. As such, it clarifies commelinid-monocotyledon phylogenetic relationships, reveals Poaceae-specific features and has led to the discovery of conserved non-coding sequences predating monocotyledon–eudicotyledon divergence.

Revue:

Nature

Lien:

https://www.nature.com/nature/journal/v488/n7410/full/nature11241.html%3FWT.ec_id%3DNATURE-20120809