重金属Cd^(2+)对日本楤木营养品质和抗氧化酶活性的影响  

Effects of Cd Pollution on Nutrition Quality and Antioxidant Enzyme Activity of Arlia elata var. inermis

作　　者：孟丽[1] 李德生[1] 李海茹[1] 茹丽叶[1] 王璠[1] 吴强 

机构地区：[1]天津理工大学,天津300384 [2]天津市宁河县林业局

出　　处：《东北林业大学学报》2013年第11期94-96,共3页Journal of Northeast Forestry University

基　　金：天津市科技支撑计划重点项目(12AZCZDC00400);天津市农业科技成果转化与推广项目(0801160)

摘　　要：为研究日本楤木(Arlia elata var.inermis)对重金属Cd2+的抗性机理,采用盆栽试验法,在气候室条件下研究不同质量分数Cd2+处理对日本楤木叶片叶绿素、可溶性蛋白、可溶性糖、Vc等品质指标和抗氧化酶活性的影响。研究表明:当Cd2+质量分数达到5 mg·kg-1时,叶绿素a质量分数与对照相比显著增加(增加了62.9%)(P<0.05);可溶性蛋白和可溶性糖质量分数随Cd2+处理质量分数的增加呈现先增加后下降趋势,当质量分数为1、2mg·kg-1时,与对照相比可溶性蛋白和可溶性糖质量分数显著增加(P<0.05);Cd2+处理对日本楤木Vc质量分数的影响并不显著(P>0.05),Vc质量分数呈逐渐下降趋势;当Cd2+质量分数为2 mg·kg-1时,过氧化物酶(POD)和过氧化氢酶(CAT)活性达到最高值,POD活性与对照相比显著增加。An experiment was conducted to study the resistance mechanism of heavy metal Cd^2＋ on Arlia elata var. inermis, pot experiment hlorophyll, soluble protein, soluble sugar and antioxidant enzyme activities in climatic chamber. Chlorophyll a increased by 62.9% when exposed in 5 mg·kg^-1（ P〈0.05 ）. The contents of soluble protein and soluble sugar firstly in- creased, and then decreased with the increasing of Cd2＋ content, when cultured in the contents of 1 and 2 mg ·kg^-1 , and the content of soluble protein and sugar increased significantly compared with the CK （ P〈0.05 ）. The content of vitamin C gradually decreased with the level of Cd^2＋ added in the soil. The activities of peroxidase （POD） and catalase （CAT） reached the maximum value of 2 mg·kg^-1, and the activities of POD increased obviouslv.

关 键 词：日本楤木 CD^2+ 营养品质 抗氧化酶活性 

分 类 号：Q945.14[生物学—植物学]