纳米氧化钛对髯毛箬竹叶片的生理调节作用  

Physiological Effects of Nanometer TiO2 on Indocalamus barbatus Leaves

作　　者：李博[1] 陶功胜[1] 王林[1] 谢寅峰[1] 蔡贤雷[1] 

机构地区：[1]南京林业大学,南京210037

出　　处：《东北林业大学学报》2011年第9期34-36,共3页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(39900115);南京林业大学人才培养模式创新实验区--生物科学专业人才培养模式创新项目

摘　　要：采用0、150、300、450 mg.L-1(CK、T150、T300、T450)质量浓度的纳米TiO2对髯毛箬竹进行叶面喷施处理,探讨纳米TiO2对髯毛箬竹叶片的生理影响。结果表明,适当质量浓度的纳米TiO2处理均可以有效提高髯毛箬竹叶片的可溶性蛋白、游离氨基酸、全氮、全磷、全钾质量分数,刺激抗氧化酶活性,降低丙二醛的质量摩尔T150处理组的蛋白质、游离氨基酸、全氮、全磷、全钾质量分数分别比处理前提高13.81%、15.00%、19.62%、19.箬竹叶片的营养功能、提高其抗逆能力。An experiment was conducted to study the physiological effects of nanometer TiO2 on lndocalamus barbatus leaves sprayed with nanometer TiOz at concentrations of 0, 150, 300,450 mg·L^-1（ CK, T150, T300, T450）. Results showed that nanometer TiO2 treatment could increase the contents of soluble protein, free amino acids, total nitrogen, total phos- phorus, and total potassium in L barbatus leaves, stimulate its antioxidant activities, and decrease MDA content. Different concentrations and time show various effects on L barbatus leaves. Nanometer TiO2 at a concentration of 150 mg · L^-1 exhibited the best effect. Compared with the control, the contents of soluble protein, free amino acids, total nitrogen, total phosphorus, and total potassium of L barbatus leaves in T150 treatment after one month of treatment increased by 13. 81%, 15.00%, 19.62%, 19.20% and 16.61% respectively, while MDA content decreased by 15.76%. After 9 days of treatment, activities of SOD and POD of L barbatus leaves in TI50 treatment increased by 20.56% and 25.89% respectively, which were significantly different from the control （p〈0.05）. The above results appear to indicate that exogenous nanometer SiO2 treatment could effectively improve the nutritional function of L barbatus leaves and increase their stress tolerance.

关 键 词：纳米TIO2 髯毛箬竹 生理调节 

分 类 号：Q945.78[生物学—植物学]