Plant extracts as the source of physiologically active compounds suppressing the development of pathogenic fungi

Abstract

It is shown that aqueous extracts from bird cherry tree Padus avium L., aspen Populus tremula L., and celandine Chelidonium<br />majus L., effectivily suppress the germination of Puccinia triticina Eriks uredospores. Fungitoxic activity of<br />the extracts is supposed to be determined by high content of phenolic compounds and high peroxidase activity in the<br />leaves of these plants. Fungitoxic activity of the extracts from the leaves, inflorescences, roots, and stems of siberian<br />cowparsnip Heracleum sibiricum L., was also correlated with the content of phenolic compounds in these organs. Treatment<br />of healthy wheat Triticum aestivum L., cv. Lyubava, with the extracts from common comfrey Symphytum officinale<br />L., cowparsnip Heracleum sibiricum L., and giant knotweed Reynoutria sashalinensis (F. Schmitt) Nakai, stimulated the<br />photosynthetic activity in treated leaves.