Corradi M G, Gorbi G, Ricci A, Torelli A, Bassi M
Department of Evolutive Biology, University of Parma, Italy.
Ecotoxicol Environ Saf. 1995 Oct;32(1):12-8. doi: 10.1006/eesa.1995.1079.
A clonal population of Scenedesmus acutus was treated for 3 months with 1 mg/liter Cr(VI) and then returned to Cr-free medium. After several months, the cells were treated with different Cr concentrations and then subjected to a series of morphological observations and metabolic tests. The results, compared with those obtained with a normal cell population treated in the same way, demonstrate that the progeny of algae subjected to the prolonged Cr treatment has acquired tolerance to the metal, as it can survive and grow in the presence of Cr concentrations that are lethal to normal cells. An ultrastructural description of gametes and zygotes is also given.
将钝顶栅藻的一个克隆群体用1毫克/升的六价铬处理3个月，然后放回不含铬的培养基中。几个月后，用不同浓度的铬处理这些细胞，然后进行一系列形态学观察和代谢测试。与以同样方式处理的正常细胞群体所获得的结果相比，这些结果表明，经过长时间铬处理的藻类后代已获得对该金属的耐受性，因为它们能够在对正常细胞致死的铬浓度下存活和生长。文中还给出了配子和合子的超微结构描述。
