Whole genome sequencing of a banana wild relative Musa itinerans provides insights into lineage-specific diversification of the Musa genus

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dc.creatorWu, W.
dc.creatorYang, Y.L.
dc.creatorHe, W.M.
dc.creatorRouard, M.
dc.creatorLi, W.M.
dc.creatorXu, M.
dc.creatorRoux, N.
dc.creatorGe, X.J.
dc.date2016
dc.date2016-11-15T15:11:07Z
dc.date2016-11-15T15:11:07Z
dc.date.accessioned2026-06-27T13:51:54Z
dc.descriptionCrop wild relatives are valuable resources for future genetic improvement. Here, we report the de novo genome assembly of Musa itinerans, a disease-resistant wild banana relative in subtropical China. The assembled genome size was 462.1 Mb, covering 75.2% of the genome (615.2Mb) and containing 32, 456 predicted protein-coding genes. Since the approximate divergence around 5.8 million years ago, the genomes of Musa itinerans and Musa acuminata have shown conserved collinearity. Gene family expansions and contractions enrichment analysis revealed that some pathways were associated with phenotypic or physiological innovations. These include a transition from wood to herbaceous in the ancestral Musaceae, intensification of cold and drought tolerances, and reduced diseases resistance genes for subtropical marginally distributed Musa species. Prevalent purifying selection and transposed duplications were found to facilitate the diversification of NBS-encoding gene families for two Musa species. The population genome history analysis of M. itinerans revealed that the fluctuated population sizes were caused by the Pleistocene climate oscillations, and that the formation of Qiongzhou Strait might facilitate the population downsizing on the isolated Hainan Island about 10.3 Kya. The qualified assembly of the M. itinerans genome provides deep insights into the lineage-specific diversification and also valuable resources for future banana breeding.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/77751
dc.identifier.urihttp://hdl.handle.net/123456789/68156
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceWu, W.; Yang, YL.; He, WM.; Rouard, M.; Li, WM.; Xu, M.; Roux, N.; Ge, X.J. (2016) Whole genome sequencing of a banana wild relative Musa itinerans provides insights into lineage-specific diversification of the Musa genus.Scientific Reports 6(article number 31586) ISSN: 2045-2322
dc.subjectgenomes
dc.subjectevolution
dc.subjectgenetic variation
dc.subjectmusa
dc.subjectcrops
dc.titleWhole genome sequencing of a banana wild relative Musa itinerans provides insights into lineage-specific diversification of the Musa genus
dc.typeJournal Article

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