A Phylogenetic Analysis of Tribes of the Asteraceae Based on Phytochemical Data (original) (raw)
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Flavonoids as chemotaxonomic markers for Asteraceae
Biochemical Systematics and Ecology, 2001
Flavonoids have been shown to be good taxonomic markers for Asteraceae. More than 800 compounds comprising 4700 flavonoid occurrences were included in a computational system specially made for chemotaxonomic purposes. Some implications of flavonols, flavones and other types as well as structural features of them are discussed for tribes and subtribes of Asteraceae. #
A general survey and some taxonomic implications of diterpenes in the Asteraceae
Botanical Journal of the Linnean Society, 2005
This paper provides a general survey of the occurrence of diterpenes in the Asteraceae. Data on 4351 botanical occurrences were obtained from the literature. These were grouped by skeleton for each genus. Then, the genera were grouped by subtribes, which, in turn, were gathered in tribes, followed by subfamilies. In spite of the low number of species containing diterpenes, it was possible to describe some structural features of these compounds, i.e. the skeletal types in various taxa and the positions in some skeletons that are always oxidized or never undergo oxidation in some genera. Thus, it was verified that: in the subfamily Cichorioideae, only a few of the studied species possess diterpenes, wherein kaurane is the most frequent diterpene skeleton. In the Asteroideae, the presence of diterpenes is much greater than that in the Cichorioideae and Carduoideae. At tribal taxonomic level, for example, the Astereae produce labdanes and clerodanes; Heliantheae and Eupatorieae produce kauranes and labdanes, respectively; and Calenduleae produce pimaranes. Some taxonomic implications are presented.
Journal of the Brazilian Chemical Society, 2007
Flavonóides são considerados bons marcadores químicos da família Asteraceae. Nesse artigo 4700 ocorrências de flavonóides (cerca de 800 substâncias) foram utilizadas em um sistema especialista desenvolvido para estudos taxonômicos. Através do uso de Mapas Auto-Organizáveis foram estabelecidas relações filogenéticas entre as subfamílias e as tribos de Asteraceae, as quais foram classificadas com base no número de ocorrências e nos padrões de oxidação de flavonóides. Os resultados obtidos permitiram a diferenciação das duas subfamílias de Asteraceae a correlação de tribos na subfamília Cichiroideae de acordo com a árvore topológica proposta por Karis o agrupamento de tribos de acordo com a árvore baseada em dados de CpDNA proposta por Jansen e separar as subtribos de Asteroideae bem como as tribos de acordo com o grau de metoxilação x glicosilação de flavonóides. A partir desses resultados pode-se afirmar que o método descrito com dados químicos pode ser utilizado como uma ferramenta complementar na classificação de plantas.
Molecular diversity in some medicinal members of Asteraceae
Egyptian Journal of Advanced Applied Sciences, 2022
Identification and characterization of the plants is very important to protection and economical use. This work used the RAPD method for show the molecular characteristics of six species of Asteraceae. The study was carried out from the April 2021 to July 2021. five primers were used to amplify the DNA from the studied species. The obtained results of the RAPD profiles ranged from 100 to 1500bp. About 40 bands were cleared for the studied six species. The number of bands per species varied from 2 to 12 for primer. The highest similarities value was obtained at Sonchus oleraceus and Senecio desfontainei (88%) and the lowest obtained at Bidens pilosa and Cichorium pumilum (61%). The RAPD-PCR dendrogram classified the studied species of into definite clusters according the primer. Primer c separated Cichorium pumilum and Senecio desfontainei in the first clusters as a genetically different about the others in the second cluster, meanwhile primer d separated Urospermum picroides and Cichorium pumilum in definite clusters than others. From this study, it can conclude that, the RAPD can differentiate between the six Aster species, through rapid method to economical use as well as identification and conservation.
This paper shows some congruencies and incongruencies between the chemical data and morphological analysis of the Heliantheae tribe sensu Stuessy and Karis and Ryding. The chemical data were obtained from a database containing information about monoterpenes, sesquiterpenes, ses-quiterpene lactones, diterpenes, triterpenes, flavonoids, polyacetylenes, coumarins, benzofuranes and benzopyranes isolated from the species of the tribe. The number of occurrences of these secondary metabolites were standardized and analysed using the principal component analysis. The importance of the chemical data to the understanding of the posi-tion of the subtribes is discussed on the basis of two main botanical classifications.
Morphologic and Essential oil Profiles of Three Species from Asteraceae
Natural Product Communications, 2018
In this study we aimed to evaluate the morphological traits and essential oil compositions of three members of Astreraceae ( Helichrysum plicatum subsp. plicatum DC., Tanacetum vulgare L., Anthemis cretica L. subsp. albida (Boiss.) Grierson) growing wild in the semi-arid areas of Cankiri province, Turkey. Some morphological characters were reported for the first time. Essential oils were obtained by hydrodistillation, and their components were identified using gas chromatography–mass spectrometry (GC-MS). Forty eight compounds were detected for Helichrysum plicatum subsp. plicatum DC., 39 for Tanacetum vulgare L., and 15 for Anthemis cretica L. subsp. albida (Boiss.) Grierson. Although these species belong to the same family, the essential oil profiles revealed significant alterations. The dominant compounds in Helichrysum plicatum subsp. plicatum DC. were sesquiterpenes, whereas monoterpenes were the most abundant compounds in Tanacetum vulgare L. and Anthemis cretica L. subsp. alb...
Journal of Mountain Research
The Asteraceae family has a worldwide distribution with a special focus on the Mediterranean, Eastern Europe, and Asia Minor. It contains approximately 33,000 plant species with over “1600 to 1700” genera worldwide in tropical and subtropical climates. Over the centuries, Asteraceae plants have been used as medicinal plants throughout the world. There are several well-known taxa in the Asteraceae family, including lettuce, chicory, artichoke, daisy, and dandelion, which have been used for centuries in food and medicine. The family members are quite diverse, but they all share a common chemical composition. For example, inulin is a natural polysaccharide with strong prebiotic properties and is found in all species. The majority of species are annual, biennial, or perennial herbaceous plants, and they can be found all over the world. This family includes astringents, anti-inflammatory drugs, diaphoretics, nerve tonics, laxatives, wound healing products, blood flow disorders, headaches...
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Chemometrics and Intelligent Laboratory Systems, 2001
This work describes an application of principal component analysis PCA on a database of secondary metabolites from the Asteraceae family. The numbers of occurrences of metabolites in 11 chemical classes for the different tribes of the family were used as variables. PCA allows the identification of chemical classes that contribute most to the subgroups classification within the family. Relationships between chemical composition and botanical classification were made.
Natural product communications
This work describes the application of partial least squares (PLS) regression to variables that represent the oxidation data of several types of secondary metabolite isolated from the family Asteraceae. The oxidation states were calculated for each carbon atom of the involved compounds after these had been matched with their biogenetic precursor. The states of oxidation variations were named oxidation steps. This methodology represents a new approach to inspect the oxidative changes in taxa. Partial least square (PLS) regression was used to inspect the relationships among terpenoids, coumarins, polyacetylenes, and flavonoids from a data base containing approximately 27,000 botanical entries. The results show an interdependence between the average oxidation states of each class of secondary metabolite at tribe and sub tribe levels. The use of chemical data in plant classification has been the subject of increasing interest in phytochemistry, biochemistry and other fields of research ...