小麦对Pb胁迫的生理生化反应研究

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Abstract

Changes in the activity of antioxidant enzymes including peroxidases (POD) and superoxide dismutases (SOD) and in the contents of chlorophyll (CHL),malondialdehyde (MDA),and soluble proteins (SP) in wheat (Triticum aestivum L) under the stress of Pb in soil were examined. The results showed a decrease of chlorophyll content in the leaves,and the concentrations of MDA and SOD level were not significantly increased. The POD activity could be induced to increase under the stress of Pb. The inhibition of protein biosynthesis by Pb was one of the toxic mechanisms involved. The activity of POD and SOD,contents of MDA and CHL could not be considered as biomarkers of stress by Pb in soil. While the contents of SP could be considered as biomarkers of stress by Pb in soil.

Key words： Soil pollution Pb Wheat Ecotoxicological effect Wheat Triticum aestivum. L Toxic mechanism

Received: 25 February 2007

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	Articles by authors
	CHAO Lei
	ZHOU Qi-xing
	CHEN Su
	CUI Shuang

Cite this article:

CHAO Lei,ZHOU Qi-xing,CHEN Su, et al. Effects of Pb on physiological mechanisms in wheat[J]. , 2007, 26(1): 6-9.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2007/V26/I1/6

[1] Shen Z G,Li X D,Wang C C,et al.2002.Lead phytoextraction from contaminated soil with high-biomass plant species[J].Environ.Qual.,31:1893-1900.

[2] Wang YM,Chen TC,Yeh KJ,et al.2001.Stabilization of an elevated heavy metal contaminate site[J].J.Haz.Mat.,88:63-74.

[3] 晁雷,周启星,崔爽,等.2006.铅与对二氯苯复合污染对小麦和大白菜种子发芽和幼苗期生长的毒性[J].生态学杂志,25(8):944-949.

[4] 孙铁珩,李培军,周启星.2005.土壤污染形成机理与修复技术[M].北京:科学出版社.

[5] 周启星,孙福红,郭观林,等.2004.乙草胺对东北黑土铅形态及生物有效性的影响[J].应用生态学报,15(10):1883-1886..

[6] Foyer C H,Lelandais M,Kunert K J.1994.Photooxidative stress in plants[J].Phsiol.Plant,92:696-717.

[7] Sanita di Toppi L,Gabbrielli R.1999.Response to cadmium in higher plants[J].Environ.Exp.Bot.,41:105-113.

[8] Salin M L.1987.Toxic oxygen species and protective svstems of the chloroplast[J].Physiol.Plant,72:681-689.

[9] 臭建慧,杨玲,孙国荣.2004.低温胁迫下玉米幼苗叶片活性氧的产生及保护酶活性的变化[J].植物研究,24(10):456-459.

[10] 晁雷,周启星,陈苏.2006.污染土壤修复效果评定方法的研究[J].环境污染治理技术与设备,7(4):7-11.

[11] 宋玉芳,周启星,宋雪英,等.2002.土壤环境污染的生态毒理学诊断方法研究进展[J].生态科学,21(2):182-186.

[12] 金彩霞,周启星.2006.pH对水-土界面镉迁移特征的影响[J].沈阳建筑大学学报(自然科学版),22(4)626-628.

[13] Hegedüs A,Erdei S,Horvath C.2001.Comparative studies of H₂O₂ detoxifying enzymes in green and greening barley seedling under cadmium stress[J].PlantSci.,160:1085-1093.

[14] Bradford M.M..1976.A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding[J].Anal.Biochem,72:248-254.

[15] Wu X Y Von Tiedemann A.2002.Impact of fungicides on active oxygen species and antioxidant enzymes in spring barley(Hordeum vulgare L) exposed to ozone[J].Enviro.Pollut.116:37-47.

[16] Wang Meie,Zhou Qixing.2006.Effects of herbicide chlormuron-ethyl on physiological mechanisms in wheat(Triticum aestivum)[J].Ecotoxicology and Environmental Safety,64(2)190-197.

[17] 李培军,熊先哲,杨桂芬,等.2003.动物生物标志物在土壤污染生态学研究中的应用[J].应用生态学报,14(12):2347-2350.

[18] 吴建慧,杨玲,孙国荣.2004.低温胁迫下玉米幼苗叶片活性氧的产生及保护酶活性的变化[J].植物研究,24(10):456-459.

[19] 庞欣,王东红,彭安.2001.铅胁迫对小麦幼苗抗氧化酶活性的影响[J].环境科学,22(5):108-111.

[20] 周期星,宋玉芳.2004.污染土壤修复原理与方法[M].北京:科学出版社.

[21] 晁雷,周启星,陈苏,等.2007.乙草胺对小麦生理机能的影响与生物标记物识别[J].环境科学,28(4):190-195.

[22] 靳萍,马剑敏,杨柯金,等.2002.Hg²⁺对小麦种子萌发及幼苗生长的影响[J].河南师范大学学报(自然科学版),30(4):81-84.