Drimys
Peumus
Antifungal activity of drimane sesquiterpenes from Drimys brasiliensis using bioassay-guided fractionation. (1/5)
PURPOSE: This study describes the antifungal effect of extracts and compounds isolated from Drimys brasiliensis acting against dermatophytes. METHODS: The activities were evaluated by using the microbroth dilution method. RESULTS: Bioassay-guided fractionation of the most active extract from the bark (CHCl3) led to the isolation of the sesquiterpene drimanes polygodial, 1-beta-(p-methoxycinnamoyl)-polygodial, drimanial and 1-beta-(p-cumaroyloxy)-polygodial, which were selectively active against Epidermophyton floccosum and Tricophyton rubrum. CONCLUSIONS: The selective antifungal activity reported in this paper for drimanes isolated from D. brasiliensis opens the possibility that they could be helpful for the developing of new antifungal agents for treating the difficult to eradicate dermatomycoses produced by E. floccosum. (+info)Complete plastid genome sequences of Drimys, Liriodendron, and Piper: implications for the phylogenetic relationships of magnoliids. (2/5)
BACKGROUND: The magnoliids with four orders, 19 families, and 8,500 species represent one of the largest clades of early diverging angiosperms. Although several recent angiosperm phylogenetic analyses supported the monophyly of magnoliids and suggested relationships among the orders, the limited number of genes examined resulted in only weak support, and these issues remain controversial. Furthermore, considerable incongruence resulted in phylogenetic reconstructions supporting three different sets of relationships among magnoliids and the two large angiosperm clades, monocots and eudicots. We sequenced the plastid genomes of three magnoliids, Drimys (Canellales), Liriodendron (Magnoliales), and Piper (Piperales), and used these data in combination with 32 other angiosperm plastid genomes to assess phylogenetic relationships among magnoliids and to examine patterns of variation of GC content. RESULTS: The Drimys, Liriodendron, and Piper plastid genomes are very similar in size at 160,604, 159,886 bp, and 160,624 bp, respectively. Gene content and order are nearly identical to many other unrearranged angiosperm plastid genomes, including Calycanthus, the other published magnoliid genome. Overall GC content ranges from 34-39%, and coding regions have a substantially higher GC content than non-coding regions. Among protein-coding genes, GC content varies by codon position with 1st codon > 2nd codon > 3rd codon, and it varies by functional group with photosynthetic genes having the highest percentage and NADH genes the lowest. Phylogenetic analyses using parsimony and likelihood methods and sequences of 61 protein-coding genes provided strong support for the monophyly of magnoliids and two strongly supported groups were identified, the Canellales/Piperales and the Laurales/Magnoliales. Strong support is reported for monocots and eudicots as sister clades with magnoliids diverging before the monocot-eudicot split. The trees also provided moderate or strong support for the position of Amborella as sister to a clade including all other angiosperms. CONCLUSION: Evolutionary comparisons of three new magnoliid plastid genome sequences, combined with other published angiosperm genomes, confirm that GC content is unevenly distributed across the genome by location, codon position, and functional group. Furthermore, phylogenetic analyses provide the strongest support so far for the hypothesis that the magnoliids are sister to a large clade that includes both monocots and eudicots. (+info)Herbicidal activity of Peumus boldus and Drimys winterii essential oils from Chile. (3/5)
(+info)Drimanes from Drimys brasiliensis with leishmanicidal and antimalarial activity. (4/5)
(+info)Comparative study on the larvicidal activity of drimane sesquiterpenes and nordrimane compounds against Drosophila melanogaster til-til. (5/5)
(+info)'Drimys' is a genus of evergreen trees and shrubs that belong to the family Winteraceae. This genus includes several species, some of which are known for their medicinal properties. For instance, the bark of Drimys winteri (also known as "winter's bark") has been used traditionally in folk medicine for its anti-inflammatory, antispasmodic, and expectorant properties. However, it is important to note that the use of these plants should be done under the guidance of a healthcare professional, as they can also have potential side effects or interact with other medications.
I'm sorry for any confusion, but "Peumus" is not a medical term. It is actually the genus name for a type of tree known as the Chilean wine palm or Jubaea chilensis. The trees are native to Chile and are known for their tall trunks and large, fan-like leaves. The sap from the tree can be used to make a sweet syrup, and the seeds can be roasted and eaten. I hope this clarifies any confusion!
"Liriodendron" is the botanical name for a genus of trees that includes two species, commonly known as tulip poplar or tulip tree (L. tulipifera) and yellow poplar or white tulip tree (L. chinense). These trees are not true poplars, but are part of the magnolia family (Magnoliaceae). They are native to North America and China respectively, and are named for their distinctive tulip-shaped flowers.
In a medical context, "Liriodendron" is not commonly used as it does not have any specific medical relevance or application. However, various parts of the tree, such as its bark and leaves, have been traditionally used in herbal medicine for their anti-inflammatory, analgesic, and sedative properties. It's important to note that the use of Liriodendron in herbal medicine is not well-studied and its safety and efficacy are not established by scientific research.