Using haploid and diploid Datura innoxia Mill, callus cultures and cell suspensions it was shown that meristematic material usually attains the lowest possible C-value of a given ploidy level. Parenchyma material of callus cultures, however, indicates a broad scattering of C-values up to 16 C, which is paralleled by C-value distribution of the free cell fraction in actively dividing cell suspen...

India has a great wealth of various naturally occurring plant drugs which have potential pharmacological activities. The troublesome weed, Datura stramonium (Jimsonweed) is a plant with both poisonous and medicinal properties and has been proven to have great pharmacological potential with a great utility and usage in folklore medicine. The present investigation was therefore undertaken to dete...

M. van Kleunen ([email protected]) and S. D. Johnson, Centre for Invasion Biology, School of Biological and Conservation Sciences, Univ. of KwaZulu-Natal, P. Bag X01 Scottsville, Pietermaritzburg 3209, South Africa. M. Fischer and present address for MvK: Inst. of Plant Sciences, Univ. of Bern, CH-3013 Bern, Switzerland. MF also at: Inst. for Biochemistry and Biology, Univ. of Potsdam, Maul...

Thirty-six alkaloids were identified in the organs of Datura ceratocaula by GC/MS. Thirty-three of them have not been previously reported for the species. Furthermore, a new tropane ester was tentatively identified as 3-(3'-formyloxytropoyloxy)tropane on basis of its mass spectral fragmentation. Hyoscyamine was the main alkaloid in the plant organs.

The antimycotic potential of Datura metel (syn. Datura alba Nees.) was investigated in vitro against Ascochyta rabiei, the cause of chickpea blight disease. The pathogen was exposed to various n-hexane concentrations (1, 2, 3 and 4% w/v) of shoot and root extracts of D. metel using poisoning food technique. All the employed concentrations of both root and shoot extracts significantly suppressed...

Doctor Soneral is a resident physician with the University of Wisconsin-Madison, Department of Family Medicine. Doctor Connor is in Pediatric Critical Care Medicine at St Mary’s Hospital Medical Center, Madison, Wis. Please address correspondence to: Steven N. Soneral, DO, Department of Family Medicine, 777 S Mills St, Madison, WI 53715-1896; phone 608.263.4550; fax 608.263.5813; e-mail ssonera...

BACKGROUND This study aimed to quantify the allelopathic potential of Datura stramonium (Jimson weed). Sorghum halepense (Johnsongrass) tolerance was assessed by germinating, seed and growing seedlings, dosing of photo-synthesis pigments, followed by treatment with D. stramonium extract tropane alkaloids. RESULTS Preliminary chemical analysis of the extracts showed the presence of alkaloids.T...

OBJECTIVES Datura Stramonium (DS) is a common weed along roadsides, in cornfields and pastures and in waste areas. It belongs to the family Solanaceae and its toxic components are tropane belladonna alkaloids. It has been used voluntarily by teenagers for its hallucinogenic effect. The plant is named in Iran as Tatoore. Symptoms and signs of acute D. Stramonium poisoning usually are similar to ...