In this study, pollen grains were sampled by using a Lanzoni trap (Lanzoni VPPS 2000) in atmosphere of Bursa in 1999 and 2000. During two years. a total of 13,991 pollen grains/m3 which belonged to 59 taxa and unidentified pollen grains were recorded. A total of 7.768 pollen grains were identified in 1999 and a total of 6.223 in 2000. From these taxa, 36 belong to arboreal and 23 taxa to non-ar...

Taxanes, such as, e.g., taxinin Β 1 or taxol 2, are unu­ sual hydroxylated diterpenes which occur in plants of the family Taxaceae, to which the yew tree (Taxus baccata L.) belongs. The antileukemic and antitumoral activities of some taxanes and the problems encountered in the syn­ thesis of the unusual tricyclic carbon skeleton 3 have aroused increasing interest in recent years . According to ...

The contents of the heterogenous group of polyisoprenoids was found about two orders of magnitude lower in seeds than the amount of polyprenols and/or their carboxylic esters accumulated during vegetation season in leaves. In contrast to leaves, no seeds were found containing more than 0.5 mg of these lipids per gram of dry tissue. Almost 50% had less than 0.01 mg/g - the amount which is the li...

PREMISE OF THE STUDY Taxus cuspidata (Taxaceae), which is well known for the effective anticancer metabolite paclitaxel (e.g., taxol), is an evergreen needle-leaved tree widely distributed in eastern Eurasia including Japan. We developed 15 microsatellite markers from this species and confirmed their utility for the dwarf variety nana, which is common in alpine regions along the Sea of Japan. ...

UNLABELLED PREMISE OF THE STUDY Microsatellite loci were developed for Pseudotaxus chienii, an old rare species endemic to China, and which provided a useful tool for investigating the patterns of population genetic structure, phylogeography, evolutionary history, and adaptive potential. Transferability was assayed in the related species, Taxus wallichiana var. mairei. • METHODS AND RESULT...

Diterpenoid dimers are rare in nature and mainly found in higher plants including the families Acanthaceae, Annonaceae, Asteraceae, Calceolariaceae, Chrysobalanaceae, Cupressaceae, Euphorbiaceae, Fabaceae, Lamiaceae, Liliaceae, Meliaceae, Rhizophoraceae, Taxaceae, Velloziaceae, and Zingiberaceae. In addition, a few diterpenoid dimers have been also reported from fungi (Psathyrellaceae), liverwo...