Abstract Detail

Systematics

Choi, Tae Young, [1], Park, Chong-Wook [1].

Phylogenetic relationships of Pyrrosia species (Polypodiaceae) inferred from nuclear and chloroplast DNA sequences.

The genus Pyrrosia Mirb. (Polypodiaceae) comprises about 50 taxa. Most taxa within the genus are highly variable in morphology, resulting in taxonomic confusion in determining the boundaries and relationships of the taxa. We analyzed nrDNA pgiC region and cpDNA rbcL gene, trnL–trnF IGS and atpF–atpH IGS sequences from 31 taxa of the genus Pyrrosia to elucidate their phylogenetic relationships, and to investigate the parentage of putative hybrid taxa. Maximum parsimony and Bayesian inference analyses of the nrDNA and cpDNA sequence data showed three major clades: 1) a clade containing widespread P. porosa and the east Asian species, 2) a clade containing P. lingua and species found primarily in southeast Asia, 3) a clade consisting of P. stigmosa and P. costata. These groupings, however, appear to be incongruent with the traditional infrageneric classification scheme based on blade shape and spore morphology.

1 - Seoul National University, School of Biological Sciences, Seoul, 08826, Korea

Keywords:
phylogeny
pgiC
rbcL
atpF-atpH IGS
trnL-trnF IGS.

Presentation Type: Poster
Session: P, Systematics Section/ASPT Posters
Location: Exhibit Hall/Savannah International Trade and Convention Center
Date: Monday, August 1st, 2016
Time: 5:30 PM This poster will be presented at 6:15 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PSY010
Abstract ID:921
Candidate for Awards:None