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Towards a complete generic‐level plastid phylogeny of the paleotropical woody bamboos (Poaceae: Bambusoideae)
Author(s) -
Zhou Meng-Yuan,
Zhang Yu-Xiao,
Haevermans Thomas,
Li De-Zhu
Publication year - 2017
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.12705/663.2
Subject(s) - biology , phylogenetics , phylogenetic tree , taxon , character evolution , botany , lineage (genetic) , poaceae , maximum parsimony , evolutionary biology , clade , gene , biochemistry
Paleotropical woody bamboos (PWB) are phylogenetically and taxonomically intractable. Because previous studies included deficient samples or lacked informative characters for tree construction, phylogenetic relationships within the PWB remain incompletely resolved. This study presents the most extensively sampled phylogeny of the PWB with 18 plastid regions and a sample of 144 (35%) ingroup species representing 40 (85%) genera and 8 outgroup species. Results confirmed Melocanninae as the earliest diverging lineage from the rest of the group, and Hickeliinae (including Nastus s.str.) and Racemobambosinae are separately placed within the PWB. Bambusinae is phylogenetically heterogeneous and consists of the Dinochloa-Greslania-Mullerochloa-Neololeba-Sphaeroambos (DGMNS) assemblage, Temburongia simplex, and the core Bambusinae. The core Bambusinae may be redefined to include a basal grade, which contains Kinabaluchloa, Holttumochloa, Bonia, Neomicrocalamus, Temochloa, Soejatmia and an unidentified taxon, and the Bambusa-Dendrocalamus-Gigantochloa (BDG) complex. The BDG complex is extremely diverse in morphology and is subdivided into six subclades. Within the Melocanninae, Davidsea, Neohouzeaua and Ochlandra are closely related to Schizostachyum. Phylogenetic relationships are mostly supported by morphological and geographical evidence. In addition, novel interpretations are provided in the redelimitation of some taxa.