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Is Persea (Lauraceae) monophyletic? Evidence from nuclear ribosomal ITS sequences
Author(s) -
Rohwer Jens G.,
Li Jie,
Rudolph Barbara,
Schmidt Sabrina A.,
van der Werff Henk,
Li Hsi-wen
Publication year - 2009
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.1002/tax.584009
Subject(s) - persea , lauraceae , biology , subgenus , monophyly , botany , clade , phylogenetic tree , genus , gene , biochemistry
The delimitation of genera within the Persea group (Lauraceae) has always been controversial. In an attempt to resolve the phylogenetic lines within this group, we analyzed ITS sequences of 61 species of the Persea group (Lauraceae) and 30 other species of Lauraceae. Several of the traditional genera or subgenera form wellsupported groups, viz., Persea subg. Eriodaphne, Machilus, Persea subg. Persea , and Alseodaphne including Dehaasia . The included species of Phoebe form two clades that are unresolved with respect to Alseodaphne . However, Persea subg. Eriodaphne (together with the Macaronesian Apollonias barbujana ) forms one of the clades of an unresolved basal trichotomy within the Persea group, whereas Persea subg. Persea is well supported as member of an otherwise Asian clade including Alseodaphne and Phoebe . This indicates that Persea , as currently circumscribed, is not monophyletic. The affinities of the Macaronesian Persea indica are clearly American rather than Asian.