Phytotoxic, Antialgal, and Antifunga! Activity of Constituents from Selected Plants of Kazakhstan

摘要

Ninety two extracts representing 23 species of plants endemic to Kazakhstan have been investigated for their phytotoxic, antialgal, and antifimgal activities. Twenty extracts were found to have antifungal activity against one or more of the pathogenic fungi Colletotrichum accutatum, C. fragariae, and C. gloeosporioides. Two extracts of Verbascum songoricum demonstrated good activity against the cyanobacterium Oscillatoria peromata. Bioactivity-guided fractionation of the water extract of V. songaricum afforded aucubin as the active algaecidal compound. Extracts prepared from Artemisia terrae-albae, Geranium collinum, Haplophyllum sieversii, and Tamarix arceuthoides were phytotoxic to bentgrass, but not to lettuce seedlings. Analysis of the extract from of Nepeta pcmnonica obtained by supercritical fluid extraction resulted in the identification of the major components 1,8-cineoIe and cw,cw-nepetalactone.