Rhodiola integrifolia: hybrid origin and medicinal ancestry.
Methods. Sequence analysis of the chloroplast glutamine synthetase gene, a single-copy nuclear gene, was used to infer relationship between the Rhodiola species.
Results. Glutamine synthetase sequences obtained from R. integrifolia plants were either identical to R. rosea sequences or were recombinant sequences that were partly identical to R. rosea and partly to R. rhodantha, but not to R. semenovii or R. algida, the two closest Asian relatives of R. rhodantha.
Conclusions. Our data support the hybrid origin of R. integrifolia. The parental taxa are most likely R. rosea and R. rhodantha. This ancestry of R. integrifolia may strengthen the role of R. integrifolia as a medicinal plant. Pharmacological or phytochemical studies have not been done. Comparative analysis with the medicinally used parental species R. rosea would reveal how much of the parental properties have been retained in the hybrid species R. integrifolia.
Ursula Schittko and Jocelyn Grann
Department of Biology, Minot State University, Minot ND 58707
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|Author:||Schittko, Ursula; Grann, Jocelyn|
|Publication:||Proceedings of the North Dakota Academy of Science|
|Date:||Apr 1, 2008|
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