The banana (Musa acuminata) genome and the evolution of monocotyledonous plants
The sequencing and analysis of the banana genome is reported; these results inform plant phylogenetic relationships and genome evolution, and provide a resource for future genetic improvement of this important crop species. Banana genome-sequence analysis Bananas ( Musa spp.) are a staple food and a...
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Published in | Nature (London) Vol. 488; no. 7410; pp. 213 - 217 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
09.08.2012
Nature Publishing Group |
Subjects | |
Online Access | Get full text |
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Summary: | The sequencing and analysis of the banana genome is reported; these results inform plant phylogenetic relationships and genome evolution, and provide a resource for future genetic improvement of this important crop species.
Banana genome-sequence analysis
Bananas (
Musa
spp.) are a staple food and a major source of income in many tropical and subtropical countries. This paper reports the sequencing and analysis of the banana genome. This is the first non-grass monocotyledon to have its genome sequenced, providing an important bridge for comparative genome analysis in plants. Global banana production is under threat from increasingly well-adapted pests and diseases, so the availability of the genome sequence is an important resource for future crop development and improvement.
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
1
. 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
2
, 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 production
3
,
4
. 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. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0028-0836 1476-4687 |
DOI: | 10.1038/nature11241 |