Chromosomal abnormalities in roots of aquatic plant Elodea canadensis as a tool for testing genotoxicity of bottom sediments.
Submersed freshwater macrophytes are considered as relevant indicators for use in bulk bottom sediment contact tests. The purpose of this study was to estimate the validity of endpoints of aquatic plant Elodea canadensis for laboratory genotoxicity testing of natural bottom sediments. The inherent level of chromosome abnormalities (on artificial sediments) in roots of E. canadensis under laboratory conditions was lower than the percentage of abnormal cells in bulk sediments from the Yenisei River. The percentage of abnormal cells in roots of E. canadensis was more sensitive to the presence of genotoxic agents in laboratory contact tests than in the natural population of the plant. The spectra of chromosomal abnormalities that occur in roots of E. canadensis under natural conditions in the Yenisei River and in laboratory contact tests on the bulk bottom sediments from the Yenisei River were similar. Hence, chromosome abnormalities in roots of E. canadensis can be used as a relevant and sensitive genotoxicity endpoint in bottom sediment-contact tests.
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia. Electronic address: t_zotina@ibp.ru.
Tatiana
T
Zotina
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia. Electronic address: medvedeva_m79@mail.ru.
Marina
M
Medvedeva
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia. Electronic address: e.trofimova11@yandex.ru.
Elena
E
Trofimova
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia. Electronic address: yuliyana_aleksandrova@mail.ru.
Yuliyana
Y
Alexandrova
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia. Electronic address: dementyev@gmail.com.
Dmitry
D
Dementyev
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia. Electronic address: radecol@ibp.ru.
Alexander
A
Bolsunovsky
D002869:Chromosome Aberrations / Q000139:chemically induced*; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis*; D031321:Hydrocharitaceae / Q000187:drug effects* / Q000235:genetics; D018517:Plant Roots / Q000187:drug effects / Q000235:genetics; D045483:Rivers / Q000737:chemistry*; D012426:Russia; D012621:Seasons; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000633:toxicity*
D014874:Water Pollutants, Chemical
Anaphase–telophase; Chromosome damage; Heavy metals; Macrophyte; Radionuclides; Sediment-contact tests