Molecular, morphological, and phytochemical evidence for a broad species concept of Plagiochila bifaria (Hepaticae)

Heinrichs, J., Groth, H., Lindner, M., Feldberg, K. and Rycroft, D.S. (2004) Molecular, morphological, and phytochemical evidence for a broad species concept of Plagiochila bifaria (Hepaticae). Bryologist, 107(1), pp. 28-40. (doi: 10.1639/0007-2745(2004)107%5B28:MMAPEF%5D2.0.CO;2)

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Abstract

Debate over the synonymy of the European Plagiochila killarniensis and the Neotropical P bifaria of R sect. Arrectae has focused on differences in secondary metabolite composition. The broad morphological species concept of R bifaria proposed in recent papers has now been tested by comparing nrDNA ITS1 and ITS2 sequences of R bifaria populations encompassing several different morpho- and chemotypes from the British Isles, Tenerife, Costa Rica, Brazil, Ecuador, and Bolivia, with sequences of other species of R sects. Arrectae, Rutilantes, and Fuscoluteae. Phylogenetic analyses demonstrate that specimens of P. bifaria form a well supported clade within Plagiochila sect. Arrectae. Sequences of R bifaria from the British Isles, Tenerife, and Ecuador, representing the "methyl everninate" chemotype, form a well supported subclade within the P bifaria clade. Sequences of specimens from Costa Rica, Brazil, and Bolivia are placed in the basal part of the R bifaria clade. The data support a broad species concept of P bifaria. The different chemotypes do not warrant distinct taxonomic ranks. Plagiochila centrifuga and P. compressula are treated as new synonyms of R bifaria.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lindner, Dr Maren and Rycroft, Dr David
Authors: Heinrichs, J., Groth, H., Lindner, M., Feldberg, K., and Rycroft, D.S.
Subjects:Q Science > QK Botany
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Bryologist
Publisher:American Bryological and Lichenological Society, Inc.
ISSN:0007-2745
Copyright Holders:Copyright © 2004 by the American Bryological and Lichenological Society, Inc.
First Published:First published in The Bryologist 107(1):28-40
Publisher Policy:Reproduced with the permission of the publisher

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