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Abstract Detail

Systematics Section/ASPT

Attigala, Lakshmi [1], Triplett, Jimmy [2], Clark, Lynn [3].

Low copy nuclear markers support the monophyly of the Sri Lanka Arundinaria clade (Poaceae: Bambusoideae: Arundinarieae).

The bamboos (Poaceae: subfamily Bambusoideae) include approximately 1,440 species classified into two tribes of woody bamboos (the tropical Bambuseae and the temperate Arundinarieae) and one tribe of herbaceous bamboos (the Olyreae). Among the temperate bamboos, Arundinaria Michx. is the oldest name and it has been separated into many new genera based on morphological variation. Arundinaria s.s. currently consists of only three North American species while in the traditional sense, the genus also comprises several Asian species from China, India and Sri Lanka. Of the nine reported woody bamboos in Sri Lanka, five species endemic to high elevation montane forests and grasslands are classified as Arundinaria. Previous molecular evidence suggested ten major lineages in the temperate woody bamboo clade, but never included any of the Sri Lankan or Indian temperate bamboo species. The most recent phylogenetic analyses based on chloroplast DNA revealed the monophyly of the Sri Lankan Arundinaria clade, but resolution among the temperate clades was poor. Objectives of the current study were to confirm the monophyly of the Sri Lankan clade with further evidence based on nuclear markers (pvcel1 and pabp1), before conducting a complete taxonomic revision for the Sri Lankan Arundinaria group, and to understand the relationships among the temperate clades. The current study highly supported the monophyly of the Sri Lankan Arundinaria group, yet the relationships among and within each temperate woody bamboo clades are unresolved. In addition, as in many previous studies, our study supports the monophyly of the temperate woody bamboos. Further, the existence of two different genomes is well supported within the temperate clade. We discuss these results and recognize the Sri Lankan Arundinaria species as a new genus.

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1 - Iowa State University, Ecology Evolution and Organismal Biology, 251 Bessey Hall, Ames, IA, 50011, USA
2 - Jacksonville State University, 700 Pelham Road North, Jacksonville, AL, 36265, USA
3 - Iowa State University, Department of Ecology, Evolution, And Organismal Biology, 251 BESSEY HALL, AMES, IA, 50011-1020, USA

Sri Lankan native Arundinaria
temperate woody bamboos
low copy nuclear markers.

Presentation Type: Oral Paper:Papers for Sections
Session: 48
Location: Elmwood/Riverside Hilton
Date: Wednesday, July 31st, 2013
Time: 4:45 PM
Number: 48013
Abstract ID:774
Candidate for Awards:None

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