Phylogenetic relationships among endemic Hawaiian Lysimachia (Myrsinaceae): insights from nuclear and chloroplast DNA sequence data
2013 (English)In: Pacific Science, ISSN 0030-8870, E-ISSN 1534-6188, Vol. 67, no 7, 237-251 p.Article in journal (Refereed) Published
The 16 endemic Hawaiian species of Lysimachia form a monophyletic group referred to as subgenus Lysimachiopsis (Marr and Bohm 1997). The group has radiated into various habitats and most species are endemic to a single island. Previous taxonomic treatments have revealed problems, particularly within the L. hillebrandii/L. remyi complex. We conducted phylogenetic analyses including 12 species of the subgenus Lysimachiopsis using nuclear ribosomal DNA (ETS, ITS) and chloroplast DNA (rpl16, rpl20-rps12, rps16, trnH-psbA, trnS-G) sequences in order to reconstruct phylogenetic relationships. A combined analysis using all sequence data supports three major clades and provides new insights into the evolutionary history of the group, especially within the problematic L. hillebrandii/L. remyi complex. The resulting molecular phylogeny provides support for the following clades: (1) L. hillebrandii and L. waianaeensis, (2) L. remyi ssp. remyi, L. maxima, and L. remyi ssp. subherbacea, (3) L. remyi ssp. caliginis and L. remyi ssp. kipahuluensis, and (4) L. glutinosa, L. scopulensis, and L. kalalauensis. The phylogenetic pattern is largely congruent with the biogeographical distribution of the species in the Hawaiian Islands. Our results also indicate that earlier taxonomic treatments of the group need to be partially revised in order to reflect phylogenetic relationships.
Place, publisher, year, edition, pages
2013. Vol. 67, no 7, 237-251 p.
cpDNA; nrDNA; Hawaii; Lysimachia; molecular phylogeny; Myrsinaceae; taxonomy
Biochemistry and Molecular Biology
Research subject Systematic Botany
IdentifiersURN: urn:nbn:se:uu:diva-100371DOI: 10.2984/67.2.7ISI: 000329330000007OAI: oai:DiVA.org:uu-100371DiVA: diva2:210187