| 抗辐射球菌对结球甘蓝吸收~(134)Cs的影响 |
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| 引用本文： | 朱聪,郭江峰.抗辐射球菌对结球甘蓝吸收~(134)Cs的影响[J].核农学报,2008,22(3):379-382. |
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| 作者姓名： | 朱聪 郭江峰 |
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| 作者单位： | 浙江理工大学生物工程研究所,浙江,杭州,310018 |
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| 摘 要： | 在土壤中引入134Cs后接种抗辐射球菌(Deinococcus radiodurans),研究其对放射性铯在土壤中化学形态的影响。在抗辐射球菌存在的情况下,利用结球甘蓝(Brassica oleracea)吸收134Cs,初步研究了134Cs化学形态与结球甘蓝对其吸收能力的关系。结果表明:134Cs在土壤中主要以残留态形式存在,且接种抗辐射球菌的土壤残留态134Cs比在无菌土壤中的比例高28.64%~38.17%。结球甘蓝对134Cs的吸收量约为12100Bq/g,但在接种抗辐射球菌后,结球甘蓝对134Cs的吸收量约为8500Bq/g,比未接种细菌时的吸收量下降了约29%。抗辐射球菌可以改变134Cs在土壤中的化学形态,从而降低植物对134Cs的吸收。
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| 关 键 词： | ~(134)Cs 抗辐射球菌 化学形态 结球甘蓝 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31 |
EFFECT OF Deinococcus radiodurans ON UPTAKE OF ~(134)Cs BY Brassica oleracea |
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| ZHU Cong,GUO Jiang-feng.EFFECT OF Deinococcus radiodurans ON UPTAKE OF ~(134)Cs BY Brassica oleracea[J].Acta Agriculturae Nucleatae Sinica,2008,22(3):379-382. |
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| Authors: | ZHU Cong GUO Jiang-feng |
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| Abstract: | Deinococcus radiodurans was inoculated into the soil which was spiked with 134Cs to investigate its effect on chemical speciation of 134Cs.The relationship between chemical speciation of 134Cs and its absorbtion capacity by cabbage(Brassica oleracea) in the presence of D.radiodurans was also investigated.The results showed that an increase of 28.64%～38.17% in content of 134Cs in residual phase was observed with presence of D.radiodurans in comparison with the aseptic control.The amounts of radiocesium uptaken by cabbage were about 12100Bq/g under aseptic conditions,however,which were about 8500Bq/g with the presence of D.radiodurans.The proportion of 134Cs taken up by cabbage decreased about 29% in comparison with the aseptic control.The chemical speciation could be influenced by D.radiodurans so that its uptake by plants could be reduced. |
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| Keywords: | ~(134)Cs Deinococcus radiodurans chemical speciation cabbage |
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