Some proposals on the infrageneric classification of <i>Drosera</i> L.

Seine, R.; Barthlott, Wilhelm

doi:10.2307/1223544

Cited by 26 publications

(23 citation statements)

References 8 publications

(12 reference statements)

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“…Plant materials-Dried leaf materials of taxa were collected preferentially in their natural habitats or otherwise obtained from tissue culture and cultivation, for all subgenera and sections of Drosera sensu Seine and Barthlott (1994) except sect. Meristocaules (http://ajbsupp.botany.org/v90/).…”

Section: Methodsmentioning

confidence: 99%

“…In recent decades, new information, such as chromosome numbers (e.g., Kondo, 1976), pollen morphology (Takahashi and Sohma, 1982), secondary compounds (Culham and Gornall, 1994), and seed germination types (Conran, Jaudzems, and Hallam, 1997), has been added. Although new systems have been proposed recently (Marchant, Ashton, and George, 1982;Seine and Barthlott, 1994;Schlauer, 1996), the delimitations of the subgenera and sections of Drosera are controversial. Williams, Albert, and Chase (1994) inferred the phylogenetic relationship of 12 Drosera species covering most sections sensu Seine and Barthlott (1994), but the phylogenetic relationships within Drosera, which is morphologically divergent and includes more than 150 species, are still ambiguous, because the few species selected from each section have not been sufficient for an overview of the general phylogenetic relationships of Drosera.…”

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confidence: 99%

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Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA Sequences

Rivadavia

Kondo

Kato

et al. 2003

American J of Botany

118

135

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The sundew genus Drosera consists of carnivorous plants with active flypaper traps and includes nearly 150 species distributed mainly in Australia, Africa, and South America, with some Northern Hemisphere species. In addition to confused intrageneric classification of Drosera, the intergeneric relationships among the Drosera and two other genera in the Droseraceae with snap traps, Dionaea and Aldrovanda, are problematic. We conducted phylogenetic analyses of DNA sequences of the chloroplast rbcL gene for 59 species of Drosera, covering all sections except one. These analyses revealed that five of 11 sections, including three monotypic sections, are polyphyletic. Combined rbcL and 18S rDNA sequence data were used to infer phylogenetic relationships among Drosera, Dionaea, and Aldrovanda. This analysis revealed that all Drosera species form a clade sister to a clade including Dionaea and Aldrovanda, suggesting that the snap traps of Aldrovanda and Dionaea are homologous despite their morphological differences. MacClade reconstructions indicated that multiple episodes of aneuploidy occurred in a clade that includes mainly Australian species, while the chromosome numbers in the other clades are not as variable. Drosera regia, which is native to South Africa, and most species native to Australia, were clustered basally, suggesting that Drosera originated in Africa or Australia. The rbcL tree indicates that Australian species expanded their distribution to South America and then to Africa. Expansion of distribution to the Northern Hemisphere from the Southern Hemispere occurred in a few different lineages.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA Sequences

Rivadavia

Kondo

Kato

et al. 2003

American J of Botany

118

135

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“…Drosera sect. Drosera (sensu Diels 1906, Seine & Barthlott 1994 and it seems to be closely related to D. felix and D. kaieteurensis, two further species from the savannas of the Guayana Highlands (Brummer-Dinger 1955, Steyermark & Smith 1974.…”

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confidence: 99%

Drosera solaris (Droseraceae), a new sundew from the Guayana Highlands

Fleischmann¹,

Wistuba²,

McPherson³

2007

Willdenowia

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“…In contrast to the two monotypic genera Aldrovanda and Dionaea, Drosera is one of the largest genus, consisting of approximately 150 species and distributed worldwide (Rivadavia et al 2003). Many Drosera species, especially the Northern Hemisphere species, show the basic chromosome number of x=10 with differences in ploidy level and chromosome size (Hoshi et al 2010), and most of the species belong to section Drosera of subgenus Drosera (Seine and Barthlott 1994).…”

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confidence: 99%

RAPD Profiling of Three Japanese <i>Drosera</i> Species

et al. 2015

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Summary RAPD analysis was carried out using 1200 decamer random sequences to clarify the whole fingerprint of DNA fragment appearance patterns among three Japanese Drosera species: D. tokaiensis, D. rotundifolia and D. spatulata. The RAPD analysis results showed that D. tokaiensis had not only magnificent bands common to other two species, but also many specific bands, although D. tokaiensis is of amphiploidal origin between D. rotundifolia and D. spatulata. The specific bands of D. tokaiensis might generate after the speciation or amphiduplication. Therefore, the relationship of genome compositions among the three species suggested that RAPD fragments were preferentially amplified from 20 middle-sized chromosomes in D. rotundifolia and D. tokaiensis. Thus, the chromosome information and the RAPD profiling suggested that alloploidal genome formation during Drosera speciation might obtain new beneficial genetic characters to survive and adapt to certain environments.

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Some proposals on the infrageneric classification of Drosera L.

Cited by 26 publications

References 8 publications

Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA Sequences

Phylogeny of the sundews, Drosera (Droseraceae), based on chloroplast rbcL and nuclear 18S ribosomal DNA Sequences

Drosera solaris (Droseraceae), a new sundew from the Guayana Highlands

RAPD Profiling of Three Japanese <i>Drosera</i> Species

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