Chemogeography and antimicrobial activity of essential oils from Geijera parviflora and Geijera salicifolia (Rutaceae): two traditional Australian medicinal plants.  |  Furthermore, the previously described derivative 'genifuranal', produced in abundance in such condensates from E. longifolia, was reduced to the corresponding alcohol and the antimicrobial activity determined. Similarly, no significant differences were found among genotypes both for measures of gas and for chlorophyll fluorescence, except for non-photochemical quenching (NPQ).  |  (Myoporaceae): evidence for three chemotypes. Geranyl acetate is the major constituent of the fruit essential oil of all three types within this group. Volatile oils of Eremophila longifolia F. Muell. Other novel results include generally poor activity from E. duttonii and E. sturtii essential oils and G. parviflora solvent extracts. Furthermore, the separate diploid population previously described from Western Australia was demonstrated to be the safrole/methyl eugenol type, which is restricted to a small geographic range in far north-west Western Australia (Murchison District). Usually inland, continental Australia except extreme north "Steam distillation of the leaves gave an aromatic oil in 5.8 % yield. Ann Bot. COVID-19 is an emerging, rapidly evolving situation. Forty field collected specimens of E. longifolia were taken from most of the mainland states of Australia then subjected to hydrodistillation to produce essential oils, which were then chemically characterised. A possible role of partially pyrolysed essential oils in Australian Aboriginal traditional ceremonial and medicinal smoking applications of Eremophila longifolia (R. Singab AN, Youssef FS, Ashour ML, Wink M. J Pharm Pharmacol. In Europe, it is increasingly cultivated for its ornamental flowers, as well as for use in aromatherapy and traditional herbal medicine due to its broad spectrum of biological activities. Recently relative flow cytometric analysis, coupled with chromosome counts conducted earlier, has demonstrated that chemotypes with exceptionally high essential oil yields, such as the type A and B chemotypes in New South Wales, and the phenylpropanoid chemotype in Western Australia, are diploid whereas all others are tetraploid. Previous studies have demonstrated that the widely distributed desert plant Eremophila longifolia has at least six geographically defined essential oil chemotypes. Access scientific knowledge from anywhere. Journal of essential oil-bearing plants JEOP.  |  (Myoporaceae) leaves were obtained by hydrodistillation and analysed using GC–MS. Geijera parviflora bark oil demonstrated comparatively good antibacterial activity and extracts of pyrolysed (burned) P. striatiflora revealed both antibacterial and anti-yeast activity. Res. Antimicrobial results were generally consistent with previous literature although there were a number of novel findings. Highly antimicrobial compounds from the bark of an Erythrina species were isolated by us and we are in the process of structure elucidation. Eremophila longifolia is a SHRUB growing to 6 m (19ft 8in). Photochemical efficiency of tetraploids was also analyzed. Difference of Growth Traits, Essential Oil Content and Compositions Between Diploid and Iinduced Tet... Chromosome architecture and major essential oil constituents in Leonotis nepetifolia (L.) Ait.f. Suitable pH: acid, neutral and basic (alkaline) soils. to be used in evaluating batch authenticity for clinical trials in an eczema treatment. This site needs JavaScript to work properly. Until now, comprehensive investigation into the pharmacology, chemistry and clinical value of endemic medicinal Australian plants has mostly been restricted to a small number of species of known commercial value including Eucalyptus and Melaleuca species. All other chemotypes were shown to be tetraploid, including apparently randomly emerging individuals, representative of chemotypes producing low yields of isomenthone/menthone and karahanaenone similar in composition to the high yielding diploid types. eremanthus erythropappus branch/leaf oil: eremophila longifolia leaf extract: ergocalciferol: ergosterol: ergothioneine: erica cinerea flower extract: erigeron canadensis flower extract: extrait de fleurs de vergerette du canada: eriobotrya japonica leaf extract: extrait de feuille de néflier du japon: eriobotrya japonica leaf protoplasts Different sesquiterpenes are the characteristic constituents of their roots, tovarol and hydroindene derivatives being present in all three types, whereas guaiane esters have been detected in only one of the diploid types. Fluorescent lighting, bright-white paper, and levels of reading discomfort in Nursing-degree students: Implications for education and healthcare settings. It can grow in semi-shade (light woodland) or no shade. Epub 2013 Jun 30. NIH The higher ploidy level and total chromatin length seem to be responsible for the aromaticity in this plant. J Ethnopharmacol. The constituency of the E. longifolia (DL26) oil reveals it to be of the menthone/ isomenthone chemotype (chemotype A) as described in the literature (, ... Mutawintji National Park (Table 2.1), this sample is consistent with a 2n (diploid) karyotype of chemotype A (. The focus of the present study is to extend and enhance information concerning known chemotypes and to investigate the involvement of cell nuclei ploidy in this variation. fro... Conference: 44th International Symposium on Essential Oils. Eremophila duttonii, E. longifolia, E. sturtii, Geijera parviflora and Prostanthera striatiflora are five plant species employed by Aboriginal Peoples in ways which suggest they may contain antimicrobial agents. Two major constituents of the essential oil such as linalool and 1,8-cineole was increased 13 %and 77 %respectively, in the tetraploids than the diploid plants. Find NCBI SARS-CoV-2 literature, sequence, and clinical content: https://www.ncbi.nlm.nih.gov/sars-cov-2/. thesis). Keywords: Eremophilas have not often been cultivated in the past, although some species, including Eremophila maculata are well known.