CAJ | 학술논문

为了解印度芥菜对铀的生理响应与积累特征，进行了不同铀浓度(0、1、5、20 mg/kg)胁迫下印度芥菜的盆栽试验。结果表明：印度芥菜生长初期受铀的影响较小，生长时间越长、铀胁迫浓度越高，生长情况受影响越明显；低浓度的铀胁迫可刺激印度芥菜光合色素和可溶性蛋白质的合成，但随着铀浓度的提高，植物光合色素和可溶性蛋白质含量明显下降；铀胁迫导致印度芥菜体内的膜脂过氧化产物MDA的含量随着土壤铀浓度的提高而上升，铀对植物叶片的膜脂过氧化影响显著；印度芥菜对铀的富集量随土壤铀浓度的提高而提高，根部对铀的富集能力远强于茎叶部。因此，印度芥菜对铀污染土壤的植物修复具有潜在的应用价值。
위료해인도개채대유적생리향응여적루특정，진행료불동유농도(0、1、5、20 mg/kg)협박하인도개채적분재시험。결과표명：인도개채생장초기수유적영향교소，생장시간월장、유협박농도월고，생장정황수영향월명현；저농도적유협박가자격인도개채광합색소화가용성단백질적합성，단수착유농도적제고，식물광합색소화가용성단백질함량명현하강；유협박도치인도개채체내적막지과양화산물MDA적함량수착토양유농도적제고이상승，유대식물협편적막지과양화영향현저；인도개채대유적부집량수토양유농도적제고이제고，근부대유적부집능력원강우경협부。인차，인도개채대유오염토양적식물수복구유잠재적응용개치。
Pot experiments were conducted to investigate the changes of characteristics of growth response and accumula-tion of uranium in Brassica juncea under different uranium concentration (0,1,5,20 mg/kg) stress. The results show that:ura-nium has little effects on early growth age of Brassica juncea. The longer the growth time,the higher the stress concentration of uranium,and the more obviously the growth status being affected;Low concentration of uranium stress can stimulate synthesis of chlorophyll and soluble protein in Brassica juncea,while with the increase of the concentration of the uranium,chlorophyll and soluble protein in Brassica juncea decrease dramatically;Uranium stress lead to the content of membrane lipid peroxida-tion products MDA in Brassica juncea increasing with the concentration of uranium in soil, so uranium significantly affects membrane lipid peroxide in plant leaves; Uranium enrichment quantity increased with uranium concentration in the soil,and the roots have a higher uranium enrichment capacity than that of the stem leaf. Therefore,Brassica juncea has potential applica-tion value in phytoremediation of soil contaminated by uranium.