[Assessment of phyto- and cytotoxic effects of heavy metals and aluminum compounds using onion apical root meristem].
The effects of different concentrations (10(-6)-10(-3) M) of salts of six metals (cadmium, lead, nickel, aluminum, copper, and zinc) on the root growth of onion (Allium cepa L.) seedling and cell division, chromosome and nucleus morphology in root tip cells were studied. The obtained results showed that tested compounds inhibit the root growth, reduce the mitotic activity of meristem cells and cause the chromosome and nucleus irregularities. On the basis of these data two rows of metal salt toxicity were proposed--for effective concentrations (EC50) of toxic action: CuSO4 > CdCl2 > NiSO4 > Pb(CH3COO)2 > Al(NO3)3 > ZnSO4, and for sublethal and lethal effects of investigated substances: CuSO4 > Pb(CH3COO)2 > CdCl2 > ZnSO4 > NiSO4 > Al(NO3)3.
Dovgaliuk
A I
AI
Kaliniak
T B
TB
Blium
Ia B
IaB
D000535:Aluminum / Q000633:toxicity*; D002455:Cell Division / Q000187:drug effects; D002467:Cell Nucleus / Q000187:drug effects; D002869:Chromosome Aberrations / Q000139:chemically induced; D018519:Meristem / Q000166:cytology / Q000187:drug effects; D019216:Metals, Heavy / Q000633:toxicity*; D009152:Mutagenicity Tests; D019697:Onions / Q000009:adverse effects* / Q000187:drug effects / Q000235:genetics; D018517:Plant Roots / Q000187:drug effects* / Q000235:genetics
D019216:Metals, Heavy; D000535:Aluminum