Phylogenetic relationships among members of the subfamily Sedoideae (Crassulaceae) inferred from the ITS region sequences of nuclear rDNA

Gontcharova, Svetlana B.; Artyukova, E. V.; Gontcharov, Andrey A.

doi:10.1134/s102279540606010x

Cited by 30 publications

(50 citation statements)

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“…The boundaries and structural elements in ITS rDNA region were determined by comparison with published crassulacean sequences and ITS secondary structure model (Gontcharova & Gontcharov, ; Gontcharova et al, ). Fold predictions were made at the M. Zuker's web server (Zuker, ; http://www.bioinfo.rpi.edu/∼zukerm/rna/).…”

Section: Methodsmentioning

confidence: 99%

“…Recent molecular phylogenetic studies have only revealed distant relationship between the subsections and placed the robust subsect. Orostachys clade within the genus Hylotelephium Ohba, having similar flower features (Stephensen, 1994) but a distinct growth habit (Mayuzumi & Ohba, 2004;Gontcharova, 2006;Gontcharova et al, 2006Gontcharova et al, , 2008. The subsect.…”

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confidence: 99%

“…The Sea of Japan shores and mountains of the Korean Peninsula, Japan, and Eastern Russia are an apparent center of the subsection Orostachys diversity and likely origin. Up to 10 species are recognized in the subsection based on differences in leaf' shape, size and color, presence of stolones, inflorescence shape, and features of the flower parts (Ohwi, 1965;Ohba, 1990Ohba, , 2001Ohba, , 2003Ohba & Tagawa, 1990;Byalt, 1999;Gontcharova, 2006). These morphological characteristics are known for their plasticity in the natural populations, which allow them to often bridge boundaries between species and hampers their confident discrimination (Fig.…”

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confidence: 99%

“…and frequent fragmentation of herbarium specimens of the naturally fleshy Orostachys plants often make their comparison with the protologs difficult. As a result, species composition and relationship within the subsection Orostachys remain controversial (Ohba, 1990(Ohba, , 2001(Ohba, , 2003Byalt, 1999;Gontcharova, 2006 O. malacophylla var. iwarenge (Makino) Ohba) in the subsection (Byalt, 1999;Dudkin et al, 2001;Ohba, 2003;Gontcharova, 2006).…”

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confidence: 99%

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Phylogenetic relationships among Orostachys subsection Orostachys species (Crassulaceae) based on nuclear and chloroplast DNA data

Козыренко

Gontcharova

Gontcharov

2013

J of Sytematics Evolution

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Nuclear ribosomal ITS and four cpDNA intergenic spacer sequences were used to assess how the patterns of molecular differentiation are related to taxonomic boundaries and geographic distribution in polymorphic and taxonomically complex Orostachys subsection Orostachys (Crassulaceae). Two major cpDNA lineages were identified in a set of Orostachys populations, lineage A, comprising 13 closely related haplotypes found in 11 populations of monocarpic O. malacophylla var. malacophylla, O. maximowiczii, and O. gorovoii and lineage B that included 9 out of 10 divergent haplotypes found in five populations of O. paradoxa, distinct in perennial stoloniferous habit. Our data suggest that the current concepts of O. malacophylla var. malacophylla, O. maximowiczii, and O. gorovoii are incompatible with the differentiation at the cpDNA level. Neither of these taxa could be allied to a particular haplotype or haplotype clade. The pattern of relationships between 7 ITS ribotypes found in 17 populations supported neither the morphology‐based taxonomic subdivision in the subsection Orostachys nor grouping according to geographical origin of the populations or lineages recovered with cpDNA data. A high level of similarity of ITS rDNA sequences between the subsection members suggests their relatively recent and rapid divergence from a common ancestor.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Phylogenetic relationships among Orostachys subsection Orostachys species (Crassulaceae) based on nuclear and chloroplast DNA data

Козыренко

Gontcharova

Gontcharov

2013

J of Sytematics Evolution

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“…According to recent molecular studies ('t Hart 1995, Ham 1995, Ham & 't Hart 1998, Gontcharova et al 2006, Thiede & Eggli 2007, Gontcharova & Gontchaov 2009), the genus Phedimus Rafinesque (1817: 438) was segregated from Sedum Linnaeus (1753: 430). This taxonomic treatment of Phedimus is also supported by morphological evidences (Ohba et al 2000, Ohba 2001, Fu et al 2001.…”

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A new combination in Phedimus (Crassulaceae), with neotypification of Sedum latiovalifolium

et al. 2016

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Linnaeus's folly – phylogeny, evolution and classification of Sedum (Crassulaceae) and Crassulaceae subfamily Sempervivoideae

Messerschmid

Klein²,

Kadereit

et al. 2020

TAXON

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Sedum, containing approximately 470 species, is by far the largest genus of Crassulaceae. Three decades of molecular phylogenetic work have provided evidence for the non‐monophyly of Sedum and many more of the 30 genera of Crassulaceae subfam. Sempervivoideae. In this study, we present a broadly sampled and dated molecular phylogeny of Sempervivoideae including 80% of all infrageneric taxa described in Sedum as well as most other genera of the subfamily. We used sequences of one nuclear (ITS) and three plastid markers (matK, rps16, trnL‐trnF). The five major lineages of Sempervivoideae (i.e., Telephium clade, Petrosedum clade, Sempervivum/Jovibarba, Aeonium clade, Leucosedum plus Acre clades) were resolved as successive sister to each other in the phylogenetic analysis of the plastid markers, while in the ITS phylogeny the Petrosedum clade is the closest relative of the Aeonium clade. Our dating analysis of ITS suggests that Sempervivoideae diversified rapidly throughout the Paleocene and Eocene, possibly in the area of the former Tethys and Paratethys archipelago. A biogeographic pattern emerges in which migration out of this ancestral area is linked to pronounced morphological evolution resulting in several distinct lineages recognized as segregate genera thought to be derived from Sedum. These segregate genera, however, have been defined on the basis of strongly homoplasious characters such as degree of petal fusion, petal colouration or flower merism. Moreover, all character states currently used for the delimitation of segregate genera seem to be homoplasious, and each of them can be found in at least one species of Sedum. Extensive literature work led to the conclusion that only few of the monophyletic clades found by us can be defined unambiguously by morphological characters. Mainly for these two reasons, we believe that combination of all 14 genera currently recognized in tribe Sedeae (= clades Leucosedum plus Acre) into Sedum might be the most stable solution of the “Sedum problem”. This new Sedum s.l. would then comprise approximately 755 species.

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Phylogenetic relationships among members of the subfamily Sedoideae (Crassulaceae) inferred from the ITS region sequences of nuclear rDNA

Cited by 30 publications

References 12 publications

Phylogenetic relationships among Orostachys subsection Orostachys species (Crassulaceae) based on nuclear and chloroplast DNA data

Phylogenetic relationships among Orostachys subsection Orostachys species (Crassulaceae) based on nuclear and chloroplast DNA data

A new combination in Phedimus (Crassulaceae), with neotypification of Sedum latiovalifolium

Linnaeus's folly – phylogeny, evolution and classification of Sedum (Crassulaceae) and Crassulaceae subfamily Sempervivoideae

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