Affiliation:
1. Department of Organismic and Evolutionary Biology, Harvard University Herbaria, 22 Divinity Avenue, Cambridge, MA 02138, USA.
Abstract
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), followed by
Austrobaileya
(one species, Australia), as early branches. These findings bear directly on the interpretation of morphological evolution and diversification within angiosperms.
Publisher
American Association for the Advancement of Science (AAAS)
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371 articles.
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