Journal article

An explosive innovation: Phylogenetic relationships of Solanum section Gonatotrichum (Solanaceae).

Stern S, Bohs L ...see all

PhytoKeys, vol. 98, issue 8 (2012) pp. 89-98

  • 15


    Mendeley users who have this article in their library.
  • N/A


    Citations of this article.
  • N/A


    ScienceDirect users who have downloaded this article.
Sign in to save reference


Solanum is one of the largest plant genera and exhibits a wide range of morphological diversity. Solanum section Gonatotrichum, the focus of this study, is unique within the genus because of its fruits that swell with turgor pressure and explosively dehisce to disperse the seeds. We infer phylogenetic relationships within section Gonatotrichum using DNA sequence data from two nuclear regions (ITS and the granule-bound starch synthase gene [GBSSI or waxy]) and the chloroplast region trnT-F. The resulting phylogenetic trees support the monophyly of the section with the inclusion of Solanum lignescens, a species not previously thought to belong to the group due to the presence of stellate hairs. This inclusion of this species in section Gonatotrichum suggests that the simple, often geniculate hairs of species in the group may represent reduced stellate hairs. The presence of heterantherous flowers appears to be derived in the section, but this character is largely lost in Solanum parcistrigosum.

Author-supplied keywords

  • explosive fruit dehiscence
  • neotropics
  • phylogeny
  • solanum

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Stephen Stern

  • Lynn Bohs

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free