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| Characteristics of strontium accumulation and redistribution in organs of Vicia faba grown on Sr-contaminated soils |
| Received:March 28, 2017 |
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| KeyWord:strontium;accumulation;organ redistribution;Vicia faba |
| Author Name | Affiliation | E-mail | | LIAO Ruo-xing | Life Science College, Sichuan Normal University, Chengdu 610101, China
The Middle School Attached to Sichuan Normal University, Chengdu 610066, China | | | LAI Jin-long | Life Science College, Sichuan Normal University, Chengdu 610101, China
Mianyang Experimental Middle School of Sichuan, Mianyang 621051, China | | | LI Yue-qin | Life Science College, Sichuan Normal University, Chengdu 610101, China | | | FU Qian | Life Science College, Sichuan Normal University, Chengdu 610101, China | | | TAO Zong-ya | Life Science College, Sichuan Normal University, Chengdu 610101, China | t89807596@163.com |
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| Abstract: |
| The aim of this study was to investigate the characteristics of strontium accumulation and its redistribution in organs of Vicia faba grown on contaminated soils. Vicia faba was grown on 88Sr-contaminated soils(simulating 90Sr pollution) under pot culture conditions, and the accumulation, transport, and organ redistribution of Sr were then analyzed at various growth stages. The growth stages included the seedling stage at 46 days, the budding stage at 87 days, the blooming stage at 136 days, the podding stage at 151 days, and the maturation stage at 176 days. The results showed that Sr accumulation by V. faba was significantly greater on soils with a higher Sr content(ρ[Sr] 25~100 mg·kg-1)(P<0.05). The accumulation of Sr at various growth stages showed the following pattern:maturation stage > podding stage > blooming stage > budding stage > seedling growing stage. The bioaccumulation factor(BCF) and the translocation factor(TF) of Sr in V. faba gradually increased with an increase in growing time. Meanwhile, the distribution of Sr in different organs showed the following pattern:leaf > stem > root(seedling stage and budding stage), stem > leaf > root > flower(blooming stage), root > pod > stem > leaf(podding stage), and stem > leaf > root > pod shell > seed(maturation stage). Furthermore, in this study Sr uptake rates had a connection with the concentration of Sr contaminant in the soil. This implies that Sr has an obvious biological accumulation effect in V. faba, is easily transferred to aboveground parts, and results in serious pollution of the plant's organs and tissues. |
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