Topic
Otostegia
About: Otostegia is a research topic. Over the lifetime, 17 publications have been published within this topic receiving 262 citations.
Papers
TL;DR: A taxonomic update of the Lamioideae subfamily is presented based on earlier published data as well as 71 new DNA extracts from relevant in- and outgroup taxa, and DNA sequence data from four chloroplast regions.
Abstract: Lamioideae comprise the second-largest subfamily in Lamiaceae. Although considerable progress has recently been made in Lamioideae phylogenetics, the subfamily remains one of the most poorly investigated subfamilies in Lamiaceae. Here we present a taxonomic update of the subfamily based on earlier published data as well as 71 new DNA extracts from relevant in- and outgroup taxa, and DNA sequence data from four chloroplast regions (matK, rps16, trnL intron and trnL-F spacer). The phylogenetic positions of 10 out of 13 previously unplaced small or monotypic Asian lamioid genera and 37 additional lamioid species have been identified, and the classification is updated accordingly. Results from parsimony and Bayesian phylogenetic methods corroborate earlier results, but phylogenetic resolution as well as overall branch support are improved. All newly added genera are assigned to earlier established tribes or the new tribe Paraphlomideae Bendiksby, which includes Ajugoides, Matsumurella and Paraphlomis. Acanthoprasium is resurrected as a genus. Transfer of species is proposed to ac- commodate the monophyly of two genera (Lamium, Otostegia), whereas ten genera remain non-monophyletic (Ballota s.str., Lagopsis, Leonotis, Leonurus, Leucas, Microtoena, Phlomoides, Sideritis, Stachys, Thuspeinanta). Eriophyton and Stachyopsis have been included in Lamieae, Hypogomphia in Stachydeae, and Loxocalyx in Leonureae. Betonica, Colquhounia, Galeopsis, and Roylea remain unclassified at the tribal level. Lamium chinense and three East Asian Galeobdolon species are transferred to Matsumurella. Sulaimania and four Otostegia species are transferred to Moluccella. Alajja and three Lamium species are transferred to Eriophyton. In total, 14 new combinations are made, one at the rank of subgenus and 13 at the rank of species.
179 citations
TL;DR: Cl cladistic analysis of gross morphological, anatomical and cytological data reveals that Leucas is paraphyletic with Acrotome and Leonotis as subgroups, but no changes in the genus delimitations have been proposed.
Abstract: Interrelationships within the Leucas group have been investigated using cladistic analysis of gross morphological, anatomical and cytological data. Fifty species were sampled from Acrotome, Ballota, Isoleucas, Leonotis, Leucas, Moluccella and Otostegia. Different analyses were made, with and without continu- ous characters, and with and without characters with overlapping states. The result suggests that continuous characters and characters with overlapping states may contain a considerable amount phylogenetic informa- tion. The result also reveals that Leucas is paraphyletic with Acrotome and Leonotis as subgroups, but no changes in the genus delimitations have been proposed. The endemic Leucas species from Asia (excluding Arabia) and Socotra form monophyletic groups. The African Leucas milanjiana is excluded from the Asian sec- tion Plagiostoma Benth. Leucas is suggested to have originated in northeast tropical Africa, and to have migrated from this area over Arabia to the Indian subcontinent. The genus Leucas R. Br. consists of 55-60 species from Southern to tropical Africa and Arabia plus about 25 species from Iran to China and the Pacific. A few of these species have been introduced to other parts of the tropics. The genus has its highest
41 citations
TL;DR: Being an endemic plant of Iran, this species is an important medicinal herb which can be used for various purposes and might be helpful for scientists and researchers to find new chemical entities responsible for its claimed traditional uses and discover new lead compounds for diseases mentioned.
Abstract: Objective: The current study summarizes the updated information concerning the ethnopharmacology, Phytochemistry, and pharmacology of Otostegia persica Boiss. (Lamiaceae), an endemic medicinal plant in south and southeast of Iran. Materials and Methods: Information was collected through bibliographic investigation from scientific journals, books, theses, reports, and electronic search (databases SCOPUS, Google Scholar, Web of Science, and Science Direct). Moreover, documentation from unpublished resources and ethnobotanical surveys has been used. The present review covers the literature available from 2003 to 2013. Results: In traditional systems of medicine, this plant is reputed for treating diabetes, arthritis, gastric discomfort, headache, rheumatism, sedative activities, regulating blood pressure, and hyperlipidemia. Phytochemical screening of active components and mineral element evaluation of this species have been reported. Several types of diterpenoids and flavonols including morin, kaempferol, and quercetin are identified from the plant. Most of the pharmacological activity of this plant resides in its flavonoid fraction which causes antimicrobial and antioxidant activities. Various pharmacological studies on O. persica show antimicrobial, antioxidant, anti-inflammatory, anti-diabetic, anti-aphid, and hepatoprotective activities. Conclusion: Being an endemic plant of Iran, this species is an important medicinal herb which can be used for various purposes. This review might be helpful for scientists and researchers to find new chemical entities responsible for its claimed traditional uses and discover new lead compounds for diseases mentioned.
37 citations
TL;DR: Otostegia, Isoleucas and many Leucas have been found to agree with most other members of the subfamily Lamioideae by having high bone cells which contain crystals, and these African taxa are suggested to be closely related.
Abstract: The pericarp has been studied in 72 taxa belonging to the genera Leucas, Leonotis, Acrotome, Otostegia and Isoleucas. Otostegia, Isoleucas and many Leucas (the Asiatic sections Astrodon, Leucas, Plagiostoma, and the African Spiculifolia, Squarrosicyme, Stachydiformis and Virgata) have been found to agree with most other members of the subfamily Lamioideae by having high bone cells which contain crystals. Acrotome, Leonotis and most African Leucas (sections Hemistoma, Lasiocotys, Lonostoma, Neuflizeana, Ogadenia and Physoleucas) deviate by having thin bone cells which often lack crystals, and due to their similarity, these African taxa are suggested to be closely related. The Asiatic Leucas (Ortholeucas), Plagiostoma and Astrodon also seem to form a group. Leucas milanjiana and perhaps also Leucas hyssopifolia are considered to be extraneous to Plagiostoma and to be more closely related to the section Leucas and the African Lasiocorys, Ogadenia and Physoleucas respectively.
22 citations
Journal Article•
TL;DR: Four known diterpenoids belonging to the clerodane and tetracyclic diterpene types were isolated for the first time from Otostegia persica (Burm.) Boiss.
Abstract: Background and propose of the study: As there is no significant work on O. persica, a phytochemical investigation of this species was carried out in this study. Methods: The structures of the compounds 1-4 were established by their spectral data and their relative configuration was determined by 2D NMR. Results and major conclusion: Four known diterpenoids belonging to the clerodane and tetracyclic diterpene types were isolated for the first time from Otostegia persica (Burm.) Boiss. These compounds are known to occur only in genus Otostegia.
14 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 2 |
| 2019 | 2 |
| 2018 | 1 |
| 2016 | 1 |
| 2015 | 1 |