Morphology, phylogeny, and taxonomy of microthlaspi (brassicaceae: coluteocarpeae) and related genera

The genus Thlaspi has been variously subdivided since its description by Linnaeus in 1753, but due to similarities in fruit shape several segregates have still not gained broad recognition, despite the fact that they are
The genus Thlaspi has been variously subdivided since its description by Linnaeus in 1753, but due to similarities in fruit shape several segregates have still not gained broad recognition, despite the fact that they are not directly related to Thlaspi. This applies especially to segregates now considered to belong to the tribe Coluteocarpeae, which includes several well-studied taxa, e.g., Noccaea caerulescens (syn. Thlaspi caerulescens), and the widespread Microthlaspi perfoliatum (syn. Thlaspi perfoliatum). The taxonomy of this tribe is still debated, as a series of detailed monographs on Coluteocarpeae was not published in English and a lack of phylogenetic resolution within this tribe was found in previous studies. The current study presents detailed phylogenetic investigations and a critical review of morphological features, with focus on taxa previously placed in Microthlaspi. Based on one nuclear (ITS) and two chloroplast (matK, trnL-F) loci, four strongly supported major groups were recovered among the Coluteocarpeae genera included, corresponding to Ihsanalshehbazia gen. nov., Friedrichkarlmeyeria gen. nov., Microthlaspi s.str., and Noccaea s.l. In addition, two new species of Microthlaspi, M. sylvarum-cedri sp. nov. and M. mediterraneo-orientale sp. nov., were discovered, which are well supported by both morphological and molecular data. Furthermore, M. erraticum comb. nov. (diploid) and M. perfoliatum s.str. (polyploid) were shown to be distinct species, phylogenetically widely separate, but with some overlap in several morphological characters. Detailed descriptions, notes on taxonomy, geographical distribution, and line drawings for the new species and each species previously included in Microthlaspi are provided. In addition, the current taxonomic state of the tribe Coluteocarpeae is briefly discussed and it is concluded that while several annual taxa are clearly distinct from Noccaea, many perennial taxa, after thorough phylogenetic and morphological investigations, may have to be merged with this genus.
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Metadaten
Author:Tahir Ali, Angelika Schmuker, Fabian Runge, Irina Solovyeva, Lisa Nigrelli, Juraj Paule, Ann-Katrin Buch, Xiaojuan Xia, Sebastian Ploch, Ouria Orren, Volker Kummer, Ib Linde-Laursen, Marian Ørgaard, Thure Pablo Hauser, Ali Çelik, Marco Thines
URN:urn:nbn:de:hebis:30:3-403341
DOI:http://dx.doi.org/10.12705/651.6
ISSN:0040-0262
Parent Title (English):Taxon : journal of the International Association for plant taxonomy ; the international bureau for plant taxonomy and nomenclature
Publisher:Bureau
Place of publication:Wien
Document Type:Article
Language:English
Date of Publication (online):2016/03/08
Date of first Publication:2016/03/08
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2016/06/23
Tag:biogeography; brassicaceae; chloroplast capture; coluteocarpeae; evolution; flow cytometry; microthlaspi; molecular phylogenetics; morphology; noccaea; polyploidy; systematics; taxonomy; thlaspi
Volume:65
Issue:1
Pagenumber:20
First Page:79
Last Page:98
Note:
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
HeBIS PPN:432099808
Institutes:Senckenbergische Naturforschende Gesellschaft
Institut für Ökologie, Evolution und Diversität
Biodiversität und Klima Forschungszentrum (BiK-F)
Dewey Decimal Classification:570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell - Keine Bearbeitung 4.0

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