[CYTOGENETIC RESPONSE OF SCOTS PINE (PINUS SYLVESTRIS L.) TO CADMIUM AND NICKEL].
We studied cytogenetic polymorphism of the seeds of Pinus sylvestris L. in response to heavy metals exposure in laboratory settings over 2 years' time. We compared results obtained from the seedlings of different years: 2012 and 2013. With an increase in Ni2+ and Cd2+ concentration we observed a decrease in mitotic activity with concurrent rise in the percentage of cells in the prophase. This fact demonstrates the heavy metals act similar to both fixatives and substances that block cleavage spindle formation. In terms of pathological mitosis and the frequency of micronuclei cells, Cd2+ shows higher mutagenity compared to Ni2+. In addition, in the experimental samples, we have distinguished abnormalities such as fragmentations and agglutinations of chromosomes and especially C mitosis occurrence, which are not observed in the control.
M V
MV
Belousov
O S
OS
Mashkina
D002104:Cadmium / Q000494:pharmacology*; D002869:Chromosome Aberrations / Q000139:chemically induced*; D032461:Chromosomes, Plant / Q000235:genetics / Q000378:metabolism*; D009532:Nickel / Q000494:pharmacology*; D041605:Pinus sylvestris / Q000378:metabolism*; D011418:Prophase / Q000187:drug effects*
D002104:Cadmium; D009532:Nickel