Modification of Cs-137 transfer to rape (Brassica napus L.) phytomass under the influence of soil microorganisms

作者：Pareniuk O^*; Shavanova K; Laceby J P; Illienko V; Tytova L; Levchuk S; Gudkov I; Nanba K

来源：Journal of Environmental Radioactivity, 2015, 149: 73-80.

DOI：10.1016/j.jenvrad.2015.07.003

• Chernobyl
• Soil bacteria
• Plants
• Cs-137 accumulation

After nuclear accidents, such as those experienced in Chernobyl and Fukushima, microorganisms may help purify contaminated soils by changing the mobility of radionuclides and their availability for plants by altering the physical and chemical properties of the substrate. Here, using model experiments with quartz sand as a substrate we investigate the influence of microorganisms on Cs-137 transfer from substrate to plants. The highest transition of Cs-137 from substrate to plants (50% increase compared to the control) was observed after Brassica napus L. seeds were inoculated by Azotobacter chroococcum. The best results for reducing the accumulation of Cs-137 radionuclides (30% less) were noted after the inoculation by Burkholderia sp.. Furthermore, Bacillus megaterium demonstrated an increased ability to accumulate Cs-137. This research improves our prediction of the behavior of radionuclides in soil and may contribute towards new, microbiological countermeasures for soil remediation following nuclear accidents.

• 出版日期2015-11
• 单位中国地震局