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Multi-gene region phylogenetic analyses suggest reticulate evolution and a clade of Australian origin among paleotropical woody bamboos (Poaceae: Bambusoideae: Bambuseae)

Authors
  • Goh, W. L.1
  • Chandran, S.1
  • Franklin, D. C.2
  • Isagi, Y.3
  • Koshy, K. C.4
  • Sungkaew, S.5
  • Yang, H. Q.6
  • Xia, N. H.7
  • Wong, K. M.8
  • 1 University of Malaya, Center for Research in Biotechnology for Agriculture, Institute of Biological Sciences, Faculty of Science, Kuala Lumpur, 50603, Malaysia , Kuala Lumpur (Malaysia)
  • 2 Charles Darwin University, Research Institute for the Environment and Livelihoods, Darwin, NT, 0909, Australia , Darwin (Australia)
  • 3 Kyoto University, Laboratory of Forest Biology, Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan , Kyoto (Japan)
  • 4 Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram, Kerala, 695562, India , Thiruvananthapuram (India)
  • 5 Kasetsart University, Department of Forest Biology, Faculty of Forestry, Lad-Yao Jatujak, Bangkok, 10900, Thailand , Bangkok (Thailand)
  • 6 Chinese Academy of Forestry, Research Institute of Resources Insects, Kunming, Yunnan, 650224, China , Kunming (China)
  • 7 Chinese Academy of Sciences, South China Botanical Garden, Guangzhou, Guangdong, 510650, China , Guangzhou (China)
  • 8 Singapore Botanic Gardens, 1 Cluny Road, Singapore, 259569, Singapore , Singapore (Singapore)
Type
Published Article
Journal
Plant Systematics and Evolution
Publisher
Springer Vienna
Publication Date
Nov 06, 2012
Volume
299
Issue
1
Pages
239–257
Identifiers
DOI: 10.1007/s00606-012-0718-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

The paleotropical woody bamboo subtribe Bambusinae has not been satisfactorily circumscribed and remains a major taxonomic problem. Genera such as Holttumochloa, Mullerochloa and Temburongia have not been confidently assigned to this subtribe. The phylogenetic relationships among genera hitherto placed in or near the Bambusinae, together with the related subtribes Racemobambosinae and Melocanninae, were investigated using three chloroplast DNA markers (rps16-trnQ, trnC-rpoB and trnD-T intergenic spacers) and a nuclear DNA marker (granule-bound starch synthase I, GBSSI) for a sample of 51 ingroup species and 2 outgroup species. Phylogenetic analyses revealed four distinct lineages among the members of the currently recognized Bambusinae: (1) the Bambusa-Dendrocalamus-Gigantochloa (BDG) complex, (2) the Holttumochloa-Kinabaluchloa clade, (3) the Dinochloa-Mullerochloa-Neololeba-Sphaerobambos (DMNS) clade and (4) Temburongia simplex. The BDG complex, which comprises the core of the Bambusinae, appears to have a complex evolutionary history as indicated by incongruence between the cpDNA and the nuclear gene topologies. Introgressive hybridization and incomplete lineage sorting are possible underlying causes for this complexity. The distinction of the climbing-scrambling bamboo lineages from the core Bambusinae and Racemobambosinae suggests directions for investigating the possible existence of further subtribes with increased taxon and geographical sampling. Possible biogeographic scenarios associated with the Holttumochloa-Kinabaluchloa clade and the DMNS clade are discussed.

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