Abstract：
: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.
journal_name
Naturejournal_title
Natureauthors
D'Hont A,Denoeud F,Aury JM,Baurens FC,Carreel F,Garsmeur O,Noel B,Bocs S,Droc G,Rouard M,Da Silva C,Jabbari K,Cardi C,Poulain J,Souquet M,Labadie K,Jourda C,Lengellé J,Rodier-Goud M,Alberti A,Bernard M,Correa Mdoi
10.1038/nature11241subject
Has Abstractpub_date
2012-08-09 00:00:00pages
213-7issue
7410eissn
0028-0836issn
1476-4687pii
nature11241journal_volume
488pub_type
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