Harmful algal blooms (HABs) are overgrowths of toxic strains algae (diatoms, green) and cyanobacteria (blue-green algae). While occurring naturally, human-induced environmental changes have resulted in more frequent occurrences such worldwide. Meantime, the ecotoxicological risk HABs is rarely evaluated by means standard test methods. For first time, genotoxic potential HAB event 2020 was asses...

4Lillie, F. R., Ibid., 43, 611-613 (1916). Stormont, C., and Cumley, R. W., J. Hered., 34, 34-41 (1943). 6 Ferguson, L. C., Stormont, C., and Irwin, M. R., J. Immunol., 44, 147-164 (1942). 7Holtman, D. F., Ibid., 36, 405-412 (1939). 8 Holtman, D. F., Ibid., 36, 413-424 (1939). 9 Landsteiner, K., The Specificity of Serological Reactions, Harvard University Press, Cambridge, Mass., 1945. 10 Irwin...

T HAS recently been found that chromosome aberrations of the types I induced by various kinds of radiations occur spontaneously during the development of the pollen grains in diploid species and especially in species hybrids of Tradescantia (GILES 1940). The present studies have shown that the frequency of these aberrations is even higher in triploid Tradescantia hybrids. Furthermore, it has be...

The relation between tritium content of individual cells and grain count obtained in autoradiographs of squashed cells was investigated. The tissues used were root meristems of Tradescantia paludosa and intestinal epithelium of the mouse. The relation between grain count and tritium content is affected by self-absorption which depends on the thickness of the labeled cell. Therefore, squashed pr...

Anatomical alterations in leaves and DNA damage in cells caused by the accumulation of atmospheric pollutants can be measured by epidermal leaf analyses and Tradescantia micronuclei assay with early pollen tetrad cells. The present study examined the feasibility of using somatic and germ cells of Tradescantia pallida for biomonitoring purposes in the city of Dourados, state of Mato Grosso do Su...

There is considerable controversy with regard to the genotoxicity of glyphosate, with some reports stating that this compound is non-toxic for fish, birds and mammals. In this work, we used the comet assay to examine the genotoxicity of glyphosate isopropylamine (0.7, 7, 70 and 700 μM) in human lymphocytes, erythrocytes of Oreochromis niloticus and staminal nuclei of Tradescantia (4430) in vitr...

The purpose of this paper is to analyze the biological mutational effects caused by low doses of ionizing radiation in biological samples placed close to and around deposits of radioactive waste, as a way of monitoring the environment close to these deposits. In order to do this the Tradescantia pallida, was chosen, and through micronuclei tests one could verify the sensitivity of the dose/ Res...

For many decades water resources in Armenia have been affected by anthropogenic activity, therefore, a regular bioindication of genotoxic effects of the water bodies is desirable. The genotoxicity of water samples collected from different parts of Lake Sevan were assessed by means of Trad-SHM (stamen hair mutation) assay using Tradescantia (clone 02). Here we report a significant increase in th...