The banana (Musa acuminata) genome and the evolution of monocotyledonous plants
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D'Hont, A.; Denoeud, F.; Aury, J.M.; Baurens, F.C. (et al.) [et al. includes Rouard, M.; Guignon, V.; Dita, M.; Roux, N.] -2012-The banana (Musa acuminata) genome and the evolution of monocotyledonous plants-Nature 488-p. 213-219
Permanent link to this item: http://hdl.handle.net/10568/35839
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 countries1. The Musa domestication process started some 7,000 years ago in Southeast Asia. It involved hybridizations between diverse species and subspecies, fostered by human migrations2, 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)1. Pests and diseases have gradually become adapted, representing an imminent danger for global banana production3,4. Here we describe the draft sequence of the 523-megabase genome of aMusa 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 commelinidmonocotyledon phylogenetic relationships, reveals Poaceaespecific features and has led to the discovery of conserved noncoding sequences predating monocotyledonÃ¢â‚¬â€œeudicotyledon divergence.