@ARTICLE{TreeBASE2Ref16610,
author = {Sarah Mathews and Michael J Donoghue},
title = {The root of angiosperm phylogeny inferred from duplicate phytochrome genes.},
year = {1999},
keywords = {},
doi = {10.1126/science.286.5441.947},
url = {},
pmid = {},
journal = {Science},
volume = {286},
number = {5441},
pages = {947--950},
abstract = {Understanding the radiation of flowering plants depends critically on positioning the root of the angiosperm tree. An analysis of duplicate phytochrome genes (PHYA and PHYC) is used to root the angiosperms, thereby avoiding the inclusion of highly diverged outgroup sequences. The results unambiguously place the root near Amborella (one species, New Caledonia), and resolve water-lilies (Nymphaeales, ~ 70 species, cosmopolitan), then Austrobaileya (one species, Australia), as early branches. These findings bear directly on the interpretation of morphological evolution and diversification within angiosperms.}
}