Morwy (Morus, sp.) są wartościowymi drzewami, które mogą znaleźć w Polsce wiele zastosowań. Poważną przeszkodą w rozpowszechnieniu szlachetnych typów lub odmian morwy jest brak sprawdzonej metody ich klonowania. Tradycyjne sposoby rozmnażania wegetatywnego nie sprawdzają się w polskich warunkach klimatycznych, są mało wydajne, zawodne lub (i) długotrwałe. Możliwe jest natomiast otrzymanie drogą mikrorozmnażania pełnowartościowego materiału szkółkarskiego morwy białej i górskiej w ciągu jednego roku.
Phytotherapy has developed basing on folk traditional healing methods by means of herbal extracts. According to modern ideas of etiology and pathogenesis of the diseases, thanks to the evolution of science, phytotherapy has exempted from mostly empirical use of plant medication. It has become more and more popular among practitioners and their patients, which is possible due to progress in gaining information about healing plants as far as their phytochemical, pharmacological and clinical features are concerned.
One of many strategies of bacteria survival in a contaminated environment is plasmid-encoded resistance to toxic substances. D. desulfuricans wild strains isolated from soil and mud samples taken from contaminated sites were studied to identify plasmids in these bacteria and to examine their restriction profiles. The presence of plasmid DNA in all tested strains was demonstrated. Using B.stEII-digested DNA of phage λ. as the molecular standard, plasmid size was established at ~2.3 kbp. The restriction fragments obtained after cutting plasmid DNA with endonuclease HaeIII or AluI were better separated on gradient polyacrylamide gel than on homogeneous gel. Very high similarity between the fragment profiles was demonstrated, despite the different origins of the strains tested.