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Phylogenetic Relationships and Character Evolution of <I>Rhodiola</I> (Crassulaceae) based on Nuclear Ribosomal ITS and Plastid <I>trnL-F</I> and <I>psbA-trnH</I> Sequences

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dc.contributor.author Zhang, Jian-Qiang en
dc.contributor.author Meng, Shi-Yong en
dc.contributor.author Wen, Jun en
dc.contributor.author Rao, Guang-Yuan en
dc.date.accessioned 2015-04-20T15:15:14Z
dc.date.available 2015-04-20T15:15:14Z
dc.date.issued 2014
dc.identifier.citation Zhang, Jian-Qiang, Meng, Shi-Yong, Wen, Jun, and Rao, Guang-Yuan. 2014. "Phylogenetic Relationships and Character Evolution of Rhodiola (Crassulaceae) based on Nuclear Ribosomal ITS and Plastid trnL-F and psbA-trnH Sequences." <em>Systematic Botany</em>. 39 (2):441&ndash;451. <a href="https://doi.org/10.1600/036364414X680753">https://doi.org/10.1600/036364414X680753</a> en
dc.identifier.issn 0363-6445
dc.identifier.uri http://hdl.handle.net/10088/25131
dc.description.abstract Abstract Rhodiola (Crassulaceae) comprises about 70 species and shows a high level of morphological diversity. The genus is mainly distributed in alpine areas and cold regions of the Northern Hemisphere with the Qinghai-Tibetan Plateau as its center of diversity. The phylogenetic relationships within Rhodiola remain poorly understood largely because of difficulties in collecting samples and specimens. In the present study, 51 species/varieties from Rhodiola representing all morphological sections were analyzed using sequences of the nuclear ribosomal internal transcribed spacers region and the plastid psbA-trnH and trnL-F markers. Our results suggest that Rhodiola and Pseudosedum form a well-supported clade, but the relationship between these two genera is not resolved. None of the four currently recognized subgenera is monophyletic; yet three of seven sections, R. sects. Trifida, Prainia, and Pseudorhodiola are each supported to be monophyletic. Rhodiola rosea is a popular medicinal plant that has an adaptogenic effect. The three accessions of R. rosea from eastern Asia, eastern North America, and Europe form a well-supported clade. Rhodiola species independently reached North America from Asia twice, once in the R. rosea lineage, and the other in the R. integrifolia-R. rhodantha lineage. Two taxonomically important characters, dioecy and marcescent flowering stems, are inferred to have evolved multiple times within Rhodiola. en
dc.relation.ispartof Systematic Botany en
dc.title Phylogenetic Relationships and Character Evolution of <I>Rhodiola</I> (Crassulaceae) based on Nuclear Ribosomal ITS and Plastid <I>trnL-F</I> and <I>psbA-trnH</I> Sequences en
dc.type Journal Article en
dc.identifier.srbnumber 121312
dc.identifier.doi 10.1600/036364414X680753
rft.jtitle Systematic Botany
rft.volume 39
rft.issue 2
rft.spage 441
rft.epage 451
dc.description.SIUnit NH-Botany en
dc.description.SIUnit NMNH en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage 441
dc.citation.epage 451

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