Independent allopolyploidization events preceded speciation in the temperate and tropical woody bamboos
- 7 August 2014
- journal article
- research article
- Published by Wiley in New Phytologist
- Vol. 204 (1), 66-73
- https://doi.org/10.1111/nph.12988
Abstract
The objectives of the current study were to investigate the origin of polyploidy in the woody bamboos and examine putative hybrid relationships in one major lineage (the temperate woody bamboos, tribe Arundinarieae). Phylogenetic analyses were based on sequence data from three nuclear loci and 38 species in 27 genera. We identify six ancestral genome donors for contemporary bamboo lineages: temperate woody bamboos (tribe Arundinarieae) contain genomes A and B, tropical woody bamboos (tribe Bambuseae) contain genomes C and D, and herbaceous bamboos (tribe Olyreae) contain genome H; some hexaploid paleotropical bamboos contain genome E in addition to C and D. Molecular data indicate that allopolyploidy arose independently in temperate (AABB) and tropical woody lineages (CCDD and CCDDEE), and speciation occurred subsequent to polyploidization. Moreover, hybridization has played a surprising and recurrent role in bamboo evolution, generating allohexaploid species in the paleotropical clade and intergeneric hybrids among the allotetraploid temperate bamboos. We suggest this complex history of reticulate evolution is at least partially responsible for the taxonomic difficulty associated with the woody bamboos. This newly-resolved phylogenetic framework reflects a major step forward in our understanding of bamboo biodiversity and has important implications for the interpretation of bamboo phylogenomics.Keywords
This publication has 51 references indexed in Scilit:
- Five Nuclear Loci Resolve the Polyploid History of Switchgrass (Panicum virgatum L.) and RelativesPLOS ONE, 2012
- Progenitor-Derivative Relationships of Hordeum Polyploids (Poaceae, Triticeae) Inferred from Sequences of TOPO6, a Nuclear Low-Copy Gene RegionPLOS ONE, 2012
- MEGA5: Molecular Evolutionary Genetics Analysis Using Maximum Likelihood, Evolutionary Distance, and Maximum Parsimony MethodsMolecular Biology and Evolution, 2011
- Ancestral polyploidy in seed plants and angiospermsNature, 2011
- The frequency of polyploid speciation in vascular plantsProceedings of the National Academy of Sciences, 2009
- Hybrid speciation in angiosperms: parental divergence drives ploidyNew Phytologist, 2009
- Differential Accumulation of Retroelements and Diversification of NB-LRR Disease Resistance Genes in Duplicated Regions following Polyploidy in the Ancestor of SoybeanPlant Physiology, 2008
- Plant SpeciationScience, 2007
- Glacial history and colonization of Europe by the blue tit Parus caeruleusJournal of Avian Biology, 2004
- Plant invasions, interspecific hybridization and the evolution of new plant taxaTrends in Ecology & Evolution, 1992