Pulling the sting out of nettle systematics – A comprehensive phylogeny of the genus Urtica L. (Urticaceae)

Grosse-Veldmann, Bernadette; Nürk, Nicolai M.; Smissen, Rob D.; Breitwieser, Ilse; Quandt, Dietmar; Weigend, Maximilian

doi:10.1016/j.ympev.2016.05.019

Cited by 24 publications

(29 citation statements)

References 32 publications

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“…Gender distribution, growth habit and leaf shape have classically been used as characters to subdivide the genus Urtica. However, earlier attempts to subdivide the genus into natural units based on gender distribution (Weddell, 1856(Weddell, , 1869; see also Grosse-Veldmann et al, 2016b: supplementary table S1) do not reflect the pattern of gender distribution found in this study and are also not correlated with growth habit, which also has little phylogenetic information (see Grosse-Veldmann et al, 2016b).…”

Section: Discussionmentioning

confidence: 63%

“…Ancestral state reconstruction of gender distribution based on the phylogenetic tree for Urtica and closely related genera from Grosse‐Veldmann et al. (). Left tree: analysis based on nine gender characteristics; right tree: analysis based on four gender characteristics.…”

Section: Resultsmentioning

confidence: 99%

“…Additional Supporting Information may be found in the online version of this article: Figure S1. Ancestral state reconstruction of gender distribution based on the phylogenetic tree for Urtica and closely related genera from Grosse-Veldmann et al (2016b). Left tree: based on three plastid regions [psbA-trnH intergenic spacer (IGS), trnL-trnF including the trnL group I intron and the trnL-trnF IGS, and trnS-trnG including the trnS-trnG IGS and the trnG group II intron]; right tree: based on the nuclear ribosomal ITS1-5.8S-ITS2 region.…”

Section: Supporting Informationmentioning

confidence: 99%

“…Recent critical morphological studies based on cultivated plants, herbarium specimens and especially molecular data have helped to resolve most of the long‐standing problems in the systematics of Urtica and provided a stable basis for more detailed studies of evolutionary patterns (Weigend, , ; Weigend and Luebert, ; Farag et al., ; Henning et al., ; Grosse‐Veldmann and Weigend, ; Grosse‐Veldmann et al., ,b). They also reported the presence of some novel architectural types of monoecy, such as sandwich monoecy (Henning et al., ).…”

Section: Introductionmentioning

confidence: 99%

“…Unlike the other groups where gender distribution is complex and phylogeny has been studied, Urtica is both extremely widespread and shows a wide variety of growth forms (Grosse-Veldmann et al, 2016b). Therefore, it permits a study of the evolution of gender distribution in relation to divergent growth forms and life histories.…”

Section: Introductionmentioning

confidence: 99%

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The geometry of gender: hyper‐diversification of sexual systems in Urtica L. (Urticaceae)

Grosse-Veldmann

Weigend

2017

Cladistics

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Urtica L. (Urticaceae) is generally reported as a genus of monoecious and dioecious taxa. However, the gender information found in the literature does not at all reflect the actual diversity of gender patterns in Urtica. Dioecy appears to be truly absent from Urtica, but otherwise there has been a major diversification in the geometry of gender and no comparable patterns exist in other plant groups. Thus, we here define technical terms for all unique architectural types of monoecy found in Urtica and closely related genera and reconstruct the ancestral gender states in a Bayesian framework. Our studies are based on a near‐comprehensive sampling, including 61 of the 63 Urtica species recognized. We report polygamy, two types of gynodioecy and five different architectural types of monoecy. A total of 15 switches appear to have taken place within the genus. Although gender characteristics have diversified strongly, they are relatively conserved within clades. Monoecy is the predominant sexual system within Urtica and specifically basiandrous monoecy (i.e. basal inflorescence branches of each individual male only, apical branches female) is the most widespread type, reported for 11 different clades. In particular, it characterizes the basally branching pilulifera‐clade and the sister genus Zhengyia, and may thus represent the plesiomorphic condition for Urtica. Gender distribution and gross morphology appear to evolve largely independently from each other and gender distribution is largely independent of growth habit. However, polygamous taxa are most common amongst rhizomatous perennials (one‐third of the taxa).

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Section: Discussionmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

Section: Supporting Informationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The geometry of gender: hyper‐diversification of sexual systems in Urtica L. (Urticaceae)

Grosse-Veldmann

Weigend

2017

Cladistics

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Vitamin E and carotenoid profiles in leaves, stems, petioles and flowers of stinging nettle (Urtica leptophylla Kunth) from Costa Rica

et al. 2022

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BACKGROUND: Local leafy vegetables are gaining attention as affordable sources of micronutrients, including vitamins, pro-vitamin carotenoids and other bioactive compounds. Stinging nettles (Urtica spp.) are used as source of fibers, herbal medicine and food. However, despite the relatively wide geographical spread of Urtica leptophylla on the American continent, little is known about its content of vitamin E congeners and carotenoids. We therefore investigated the particular nutritional potential of different plant structures of wild Costa Rican U. leptophylla by focusing on their vitamin E and carotenoid profiles.RESULTS: Young, mature and herbivore-damaged leaves, flowers, stems and petioles were collected and freeze-dried. Vitamin E and carotenoids were determined by high-performance liquid chromatography after liquid/liquid extraction with hexane. ⊍-Tocopherol was the major vitamin E congener in all structures. Flowers had a high content of γ-tocopherol. Herbivoredamaged leaves had higher contents of vitamin E than undamaged leaves. Lutein was the major and ⊎-carotene the second most abundant carotenoid in U. leptophylla. No differences in carotenoid profiles were observed between damaged and undamaged leaves.CONCLUSION: The leaves of U. leptophylla had the highest nutritional value of all analyzed structures; therefore, they might represent a potential source of ⊍-tocopherol, lutein and ⊎-carotene.

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Morphological and DNA analyses suggest the reinstatement of four synonymized Cecropia species

Santos

Zchonski

Pilati

et al. 2020

Tree Genetics & Genomes

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Pulling the sting out of nettle systematics – A comprehensive phylogeny of the genus Urtica L. (Urticaceae)

Cited by 24 publications

References 32 publications

The geometry of gender: hyper‐diversification of sexual systems in Urtica L. (Urticaceae)

The geometry of gender: hyper‐diversification of sexual systems in Urtica L. (Urticaceae)

Vitamin E and carotenoid profiles in leaves, stems, petioles and flowers of stinging nettle (Urtica leptophylla Kunth) from Costa Rica

Morphological and DNA analyses suggest the reinstatement of four synonymized Cecropia species

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