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Abstract Detail

Recent Topics Posters

Crum, Alexandra [1], Faden, Robert [2], Evans, Timothy [3].

Phylogenetic analysis of Palisota (Commelinaceae) using chloroplast and nuclear regions.

Palisota(Commelinaceae) consists of approximately 26 species. The genus, which differs from other Commelinaceae genera in androecial and pollen characters, a fleshy berry-type fruit, anatomical characters, and a basic chromosome number x=20, has been divided into two sections based on uniseriate vs. biseriate seed arrangement. Molecular phylogenetic analyses in Commelinaceae have placed Palisotanear the base within the family, although its precise position is unclear. Chloroplast (matKrbcL, rps16, and trnL-trnFand psbA-trnHintergenic spacers) and nuclear (AT103) regions in 17 accessions representing 15 species of Palisotaand 15 outgroup species were sequenced and analyzed using parsimony, maximum likelihood, and Bayesian methods, with the goal of resolving Palisota’s placement within Commelinaceae and relationships among species. Preliminary results placePalisotasister to tribe Tradescantieae (maximum likelihood), or sister to both Tradescantieae and Commelineae (parsimony and Bayesian analysis).  Within Palisota,all analyses yielded similar results.  Palisota schweinfurthii, P. alopercus, andP. preussiana, all caulesent plants with red berries, are united, although relationships among them are unresolved.Palisota ambigua, P. brachythyrsa, andP. tholloni, all shrub-like or climbing plants, are also united. The results will be discussed in the context of sectional classifications, fruit color, and seed arrangement. 

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1 - Grand Valley State University, Biology, 3300a Kindschi Hall of Science, 1 Campus Dr., Allendale, MI, 49401, USA
2 - Botany, MRC-166 National Museum Of Natural History, PO Box 37012, Washington, DC, 20013, United States
3 - Grand Valley State University, Biology, 1 Campus Drive, 3321 Kindschi, Allendale, MI, 49401, United States


Presentation Type: Recent Topics Poster
Session: P, Recent Topics Posters
Location: Grand Ballroom - Exhibit Hall/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 5:30 PM
Number: PRT021
Abstract ID:1312
Candidate for Awards:None

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