New insights into the taxonomy of tribe Euclidieae (Brassicaceae), evidence from nrITS sequence data

By

Chen, Hongliang
Al-Shehbaz, Ihsan A., (Ihsan Ali) 1939-
Yue, Jipei
Sun, Hang

Type

Article

Date of Publication

2018

Original Publication

PhytoKeys

Volume

100

Pages

125-139

Subjects

Brassicaceae , Cruciferae , Euclidieae , nrITS , Phylogeny , Solms-laubachia

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.100.24756

 

Abstract

As currently delimitated, the species-rich mustard tribe Euclidieae DC. (Brassicaceae) comprises 28 genera and 152 species distributed primarily in Asia. To date, no tribe-wide comprehensive phylogenetic analysis has been conducted. In this study, sequence data from the nuclear ribosomal internal transcribed spacer (nrITS) region of 82 species in all 28 genera of Euclidieae were used to test its monophyly and infer inter- and intra-generic relationships within. Phylogenetic analyses revealed thatRhammatophyllumandSisymbriopsisare embedded withinSolms-laubachias.l., andSolms-laubachialanuginosa(Eurycarpuslanuginosus) fell outside the tribe. Therefore,Solms-laubachias.l. as currently recognized is not monophyletic and its generic delimitation needed further study. Besides, our results suggest that the generaLepidostemon,Neotorularia, andTetracmeare polyphyletic.