Iridoid glucosides—chemotaxonomic markers in Loasoideae

Müller, A.; Kufer, Johanna; Reiter, S.; Grau, Jürke; Weigend, Maximilian

doi:10.1016/s0031-9422(98)00744-4

Cited by 14 publications

(8 citation statements)

References 16 publications

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“…Floribundae and Macrospermae have synapomorphic hetero-oligomeric iridoids. Neither our analyses nor those of Weigend et al (2004) found support for the monophyly of Floribundae and Macrospermae hypothesized by Mü ller et al (1999) and Weigend et al (2000). In our sampling, we find weak support, based on our four-marker data set, for the monophyly of Macrospermae and Blumenbachia, which has not been previously hypothesized.…”

Section: Higher Loaseaecontrasting

confidence: 92%

“…2B) provides limited phylogenetic signal indicating that ser. Pinnatae is more closely related to Cajophora þ Scyphanthus than to Acaules, Volubile, or Deserticolae, as would be inferred from the alliance hypothesized by Weigend (1997b) and Mü ller et al (1999). Significantly, our results indicate that ser.…”

Section: Higher Loaseaesupporting

confidence: 72%

“…An alliance of ser. Floribundae and Macrospermae with Acanthifoliae was also suggested by Mü ller et al (1999) and Weigend et al (2000). We have only matK data for Loasa acanthifolia, representing Acanthifolia, but those data indicate that it is most closely related to Loasa pallida (ser.…”

Section: Higher Loaseaesupporting

confidence: 54%

“…2). Next, we compare further the hypotheses of Weigend (1997b) and Mü ller et al (1999) with our preliminary results.…”

Section: Higher Loaseaementioning

confidence: 77%

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A Phylogenetic Analysis of Loasaceae Subfamily Loasoideae Based on Plastid DNA Sequences

Hufford¹,

McMahon²,

O’Quinn

et al. 2005

International Journal of Plant Sciences

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Questions of tribal and generic circumscriptions and relationships in Loasaceae subfamily Loasoideae are addressed in phylogenetic analyses that apply four plastid regions in parsimony and maximum likelihood analyses. As circumscribed in the influential monograph of Urban and Gilg, Loaseae are paraphyletic to the sister clades Klaprothieae (Klaprothia, Plakothira, and Xylopodia) and Kissenieae (Kissenia). This problem centers on the paraphyly of Huidobria: Huidobria chilensis is sister to Klaprothieae þ Kissenieae, and Huidobria fruticosa is sister to all other Loasoideae. Parametric bootstrapping finds topologies that force the monophyly of Huidobria to be significantly different from the optimal topologies in which the genus is paraphyletic; however, Templeton and Shimodaira-Hasegawa tests did not distinguish between these phylogenetic alternatives. We recognize a strongly supported Loaseae sensu stricto (s.str.) as a clade consisting of Nasa, Aosa, Chichicaste, Presliophytum, Blumenbachia, Cajophora, Loasa sect. Loasa, and Scyphanthus. In Loaseae s.str., the monophyly of each of the following has strong support: (1) Nasa, (2) Aosa þ Chichicaste, (3) Presliophytum þ Loasa malesherbioides, and (4) a higher Loaseae clade that consists of Blumenbachia, Cajophora, Scyphanthus, and the Loasa complex (¼sect. Loasa, excluding L. malesherbioides). Blumenbachia, Cajophora (including exemplars from sections Bialatae and Bicallosae), and Scyphanthus are independently monophyletic, and clades of the Loasa complex are mixed among them. The paraphyletic Loasa complex includes the following clades: (1) ser. Pinnatae, (2) ser. Acaules þ Volubile, (3) ser. Macrospermae, placed as the sister of Blumenbachia, and (4) ser. Acanthifolia þ Floribundae þ Deserticolae, which includes the type for Loasa and is the group we recommend as the basis for a revised circumscription of Loasa.

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Section: Higher Loaseaecontrasting

confidence: 92%

Section: Higher Loaseaesupporting

confidence: 72%

Section: Higher Loaseaesupporting

confidence: 54%

“…2). Next, we compare further the hypotheses of Weigend (1997b) and Mü ller et al (1999) with our preliminary results.…”

Section: Higher Loaseaementioning

confidence: 77%

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A Phylogenetic Analysis of Loasaceae Subfamily Loasoideae Based on Plastid DNA Sequences

Hufford¹,

McMahon²,

O’Quinn

et al. 2005

International Journal of Plant Sciences

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“…En Venezuela no se han realizado investigaciones con relación a la morfología y/o la anatomía de las semillas de las especies de la familia Loasaceae; sin embargo, a nivel mundial existen trabajos sobre la semilla, pero basados exclusivamente en la cubierta seminal; en tales estudios se ha demostrado que la morfología de la semilla, en este grupo, tiene importancia taxonómica (Hill 1976;Poston & Shetler 1984;Hufford 1988). Además de su importancia reproductiva y taxonómica, las semillas de las especies de Loasaceae, tienen importancia medicinal, ya que estudios químicos has demostrado que especies pertenecientes a las subfamilias Loasoideae y Mentzelioideae presentan iridoides, (Kooiman 1974;Søren, et al 1981;Müller et al 1999); estos compuestos están siendo empleados farmacológicamente para sintetizar ingredientes activos promisorios en el tratamiento del cáncer y del HIV (Mølgard et al 2001). Además de esto, exploradores y botánicos reportaron que semillas del género Mentzelia fueron importantes en la dieta de los aborígenes americanos nativos en el noroeste, centro y suroeste de los Estados Unidos (Hill 1976).…”

Section: Iintroduccionunclassified

Micromorfología Y Estructura De La Cubierta Seminal De Cuatro Especies De Loasaceae Juss. Presentes en Venezuela

Noguera

Jáuregui

2006

Rodriguésia

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RESUMO Se realizó el estudio morfológico y anatómico de la cubierta seminal de Gronovia scandens L., Klaprothia fasciculata (Presl.) Poston & Nowicke, Mentzelia aspera L., y Nasa triphylla (Juss.) Weigend, especies pertenecientes a las Loasaceae. El estudio se llevó a cabo con material fresco y material herborizado. La caracterizaciónmorfológica serealizó bajomicroscopio estereoscópico. Para lacaracterizaciónhistológica se obtuvieron secciones transversales y longitudinales las cuales se estudiaron bajo un microscopio óptico, adicionalmente serealizaronpruebas histoquímicas. Lamicromorfología de lacubiertaseminal fue observada en un microscopio electrónico de barrido. Se encontraron diferencias en el tamaño, color y forma de las semillas, con las cuales se puede diferenciar fácilmente cada una de las especies. En el estudio de la microescultura y la anatomía de la cubierta seminal también se observaron rasgos específicos que permiten diferenciar las cuatro especies estudiadas.

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Class Magnoliopsida (Dicotyledons)

2009

Flowering Plants

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Iridoid glucosides—chemotaxonomic markers in Loasoideae

Cited by 14 publications

References 16 publications

A Phylogenetic Analysis of Loasaceae Subfamily Loasoideae Based on Plastid DNA Sequences

A Phylogenetic Analysis of Loasaceae Subfamily Loasoideae Based on Plastid DNA Sequences

Micromorfología Y Estructura De La Cubierta Seminal De Cuatro Especies De Loasaceae Juss. Presentes en Venezuela

Class Magnoliopsida (Dicotyledons)

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