top of page

ICRP International

Conference on Recovery After Nuclear Accidents

Radiological Protection Lessons
from Fukushima and Beyond

December 1 - 18, 2020

N.L. Shevtsova, D.I. Gudkov

Updated: Dec 11, 2020

Chromosomal Abnormalities in Arrowhead From the Chernobyl Exclusion Zone Lakes

N.L. Shevtsova, D.I. Gudkov (Institute of Hydrobiology, NAS, Ukraine)

Despite the more than 30 years after Chernobyl catastrophe the level of chromosomal abnormalities in roots of high aquatic plants in Chernobyl exclusion zone (CEZ) remains high and exceeds the spontaneous level by 3-4 times. Dose for arrowhead from CEZ lakes varies in the range of 0.46 - 18.2 μGy h−1. The frequency of chromosome aberrations of arrowhead varies 3.2-8.5%, depending on dose. In spectrum: single fragments – 50-78% of total number of aberrations, single bridges – 22-46% and multiple aberrations – 16-35% are registered.Reliable direct correlation between multiple aberrations and dose was found (r = 0.92; p <0.05). The very high proportion of multiple aberrations that are not typical for spontaneous and the high number of aberrations per aberrant cell may indicate a high level of genetic instability and mutagenic hazards for the freshwater ecosystems of CEZ.



N.L. Shevtsova, D.I. Gudkov (Institute of Hydrobiology, NAS, Ukraine)

チェルノブイリの大惨事から30年以上が経過したにもかかわらず、チェルノブイリの立入禁止区域(CEZ)の高性水生植物の根の染色体異常のレベルは依然として高く、自然発生レベルを3~4倍超えている。CEZの湖からのオモダカ属の線量は0.46〜18.2 μGy/hの範囲でばらつきがある。オモダカ属の染色体異常の頻度は線量に応じて3.2~8.5%のばらつきがある。スペクトルでは、単一の断片で異常の総数の50~78%、単一のブリッジで22~46%、多重異常で16~35%が登録されている。多発性異常と線量との間には信頼できる正の相関が見られた(r = 0.92、p < 0.05)。自然発生では典型的なものではない多発性異常の割合が非常に高く、異常細胞あたりの異常の数が多いことは、CEZの淡水生態系の遺伝的不安定性と突然変異原性の危険性のレベルが高いことを示している可能性がある。

Download PDF • 912KB

Related Posts

See All

Method for the Determination of Sr-90 in Small Living Objects in Vivo V.A. Zheltonozhsky (Lomonosov Moscow State University, Russia), M.V. Zheltonozhskaya (Lomonosov Moscow State University, Russia),

Organised by


Hosted by

© 2020 ICRP, International Commission on Radiological Protection

  • White Twitter Icon
  • White YouTube Icon
  • White Facebook Icon
  • White Instagram Icon
bottom of page