Phylogenetic analyses and chromosome evolution in Convallarieae (Ruscaceae sensu lato), with some taxonomic treatments

Jun Yamashita, Minoru N. Tamura

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The tribe Convallarieae, comprising 10 genera and 95 species, has recently been transferred from its own family to Ruscaceae sensu lato. In this study, sequence data from trnK and rbcL were analyzed for 19 species in 8 genera, and chromosome morphology was analyzed for 17 species in 7 genera. The parsimony analysis of trnK and rbcL sequences showed that Convallarieae are monophyletic. Although early branches did not receive strong bootstrap support, Convallaria diverged at the first branch, followed by Speirantha. The rest of the tribe was split into three, well-supported clades: one with Reineckea, the second with Campylandra and Rohdea, and the third with Tupistra, Tricalistra, and Aspidistra. Two monotypic genera, Rohdea and Tricalistra, were embedded in a clade of Campylandra and of Tupistra, respectively. Three karyotypes were distinguished in the tribe on the basis of the basic number and morphology of metaphase chromosomes: Convallaria type (with x = 19 and unimodal chromosome length), Tupistra type (with x = 19 and trimodal chromosome length), and Aspidistra-elatior type (with x = 18 and trimodal chromosome length). The character-state distribution in the molecular tree showed that the Convallaria type is plesiomorphic, from which was derived the Tupistra type and subsequently the Aspidistra-elatior type. Taxonomic treatments to transfer Campylandra to Rohdea and Tricalistra to Tupistra are also given.

Original languageEnglish
Pages (from-to)363-370
Number of pages8
JournalJournal of Plant Research
Volume117
Issue number5
DOIs
Publication statusPublished - Oct 2004
Externally publishedYes

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Asparagaceae
Convallaria
Aspidistra elatior
chromosomes
phylogeny
Aspidistra
chromosome morphology
metaphase
karyotyping

Keywords

  • Convallarieae
  • Karyotype
  • rbcL
  • Rohdea
  • trnK
  • Tupistra

ASJC Scopus subject areas

  • Plant Science

Cite this

Phylogenetic analyses and chromosome evolution in Convallarieae (Ruscaceae sensu lato), with some taxonomic treatments. / Yamashita, Jun; Tamura, Minoru N.

In: Journal of Plant Research, Vol. 117, No. 5, 10.2004, p. 363-370.

Research output: Contribution to journalArticle

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