Phytochemical Investigation of New Algerian Lichen Species: Physcia Mediterranea Nimis

Fomitiporia mediterranea, a new basidiomycete species for mycobiota of Iran

During last decade, the decline of elm trees was observed in Fars province (Iran) due to a wood decaying agent in heartwood of the trees. Unknown basidiomycete isolates were frequently isolated from such trees. The objective of the present study was to identify the basidiomycete isolates by molecular phylogenetic analysis of the internal transcribed spacers of ribosomal DNA. For this purpose, i...

New phytochemical data on Dracocephalum species

Phytochemical investigation of Virola peruviana, a new hallucinogenic plant.

0 Although Virolu perrrciarru has been described in ethnobotanical studies as being used as a hallucinogen, no proof of the presence of chemical agents explaining this activity existed previously. The present study resulted in the isolation of 5-methoxyN,N-dimethyltryptamine as well as the identification of N,Ndimethyltryptamine and 5-methoxytryptamine. thus confirming the hallucinogenic aspect...

UV-B induces cell death in the lichen Physcia semipinnata (J.F.Gmel)

We have examined the consequences of Ultraviolet-B (UV-B) irradiation in the thallus of the lichen Physcia semipinnata (J.F.Gmel) in terms of cell viability and apoptotic-like formation. UV-B induced oligonucleosomal DNA fragmentation was detected by TUNEL assay and this is the first study showing DNA fragmentation in thalli. The intensity of TUNEL-positive cells after exposure to UV-B at doses...

Phytochemical investigation of Aglaia andamanica.

Four new compounds, the limonoid 24-epi-melianodiol (8), the tirucallane aglaiodiol (9), and the two cyclopentatetrahydrobenzopyran derivatives pyramidaglain A (11) and B (12) were isolated from the leaves of Aglaia andamanica Hiern (Meliaceae), together with the eleven known constituents beta-sitosterol, beta-sitosterol glucoside, cycloart-23E-ene-3 beta,25-diol (1), three flavonoids 5-hydroxy...