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Type: Journal article
Title: Phylogenetic relationships within the 'core' Laureae (Litsea complex, Lauraceae) inferred from sequences of the chloroplast gene matK and nuclear ribosomal DNA ITS regions
Author: Li, J.
Christophel, D.
Conran, J.
Li, H.
Citation: Plant Systematics and Evolution, 2004; 246(1-2):19-34
Publisher: Springer Wien
Issue Date: 2004
ISSN: 0378-2697
Statement of
Jie Li, D. C. Christophel, J. G. Conran and Hsi-Wen Li
Abstract: A phylogenetic analysis of the core Laureae (Litsea complex) was conducted using the chloroplast gene matK and nuclear ribosomal DNA ITS sequences to investigate generic relationships and boundaries within the complex. Despite low genetic divergence for matK, rooting of the tree with Sassafras resulted in Iteadaphne as the basal member of the complex and five resolved clades: a Neolitsea clade and then Laurus, Parasassafras, Litsea and Lindera clades in a large polytomy with unresolved Lindera sections plus Umbellularia. A combined analysis of the data (identical to the ITS results) provided a more resolved phylogeny of the Laureae, with four major lineages: the Laurus, Litsea, Lindera and Actinodaphne II clades. These clades also appear to reflect the importance of inflorescence structure and ontogeny within the Laureae, as well as data from cuticular micromorphology, but there was no support for traditional generic characters such as 2- versus 4- celled anthers. As a result, genera such as Actinodaphne, Litsea, Neolitsea and Lindera were polyphyletic in all analyses. Parasassafras was related to Sinosassafras by the matK data, but distant from it in the ITS and combined analyses.
Keywords: Lauraceae; Laureae; matK; ITS; molecular phylogeny; Litsea; Lindera; classification
Description: The original publication can be found at
RMID: 0020040381
DOI: 10.1007/s00606-003-0113-z
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute publications

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