中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 镧对汞胁迫下玉米幼苗膜脂过氧化的影响 安徽农业科学 2007,35 (33) 10613-10614+10616
Position: Home > Articles > Effects of La on Membrane-lipid Peroxidation of Maize Seedlings under Hg Stress Journal of Anhui Agricultural Sciences 2007,35 (33) 10613-10614+10616

镧对汞胁迫下玉米幼苗膜脂过氧化的影响

作  者：
马占强;李娟;郑跃进
单  位：
洛阳理工学院环境与化学系;河南科技大学农学院
关键词：
玉米;镧;汞胁迫;膜脂过氧化
摘  要：
探讨La促进植物生长、增强抗重金属的能力及机制。以玉米杂交种"郑单958"为材料,用不同浓度LaCl3(0.01,0.02,0.05,0.10mg/L)处理玉米幼苗2 d,再分别用含50 mg/L HgCl2的1/2 Hoagland营养液胁迫处理3 d,利用水培法对Hg胁迫下玉米幼苗的膜脂过氧化产物和保护酶系统进行研究。随着LaCl3浓度的升高,MDA和脯氨酸含量以及保护酶POD和CAT活性先下降后上升,说明适宜浓度的LaCl3降低了细胞内Hg胁迫诱导的膜脂过氧化产物和渗透物质的积累,缓解了活性氧自由基的产生。LaCl3的最佳作用浓度为0.05mg/L。当LaCl3浓度达0.10 mg/L时,则与Hg协同作用,加剧了对玉米幼苗的伤害。得出结论,LaCl3对Hg胁迫下玉米幼苗叶片MDA和脯氨酸含量以及保护酶POD和CAT的活性产生了一定的影响。该研究为稀土元素的农业应用等提供参考依据。
译  名：
Effects of La on Membrane-lipid Peroxidation of Maize Seedlings under Hg Stress
作  者：
MA Zhan-qiang et al(College of Agronomy,Henan University of Science and Technology,Luoyang,Henan 471003)
关键词：
Maize;La;Hg stress;Membrane-lipid peroxidation
摘  要：
The aim of the research was to discuss the ability of La in promoting plant growth and strengthening resistance to heavy metals and their mechanisms.With maize hybrid "Zhengdan 958" as materials,maize seedlings were treated with different concentrations(0.01,0.02,0.05,0.10 mg/L) of LaCl3 for 2 d and then were exposed to the stress treatment with 1/2 Hoagland nutrient solution containing 50 mg/L of HgCl2 for 3 d.The membrane-lipid peroxidation products and protective enzyme system of maize seedlings under Hg stress were studied by water culture method.The contents of MDA and praline and the protective enzyme activities of POD and CAT all showed trends of first increasing and then decreasing with the increasing of LaCl3 concentration,indicating that suitable concentration of LaCl3 reduced the intracellular accumulation of membrane-lipid peroxidation products and osmotic substances that were induced by Hg stress and alleviated the production of active oxygen free radicals.The optimum LaCl3 concentration was 0.05 mg/L.When the concentration of LaCl3 reached 0.10 mg/L,it had a cooperative effect with Hg,which aggravated the damage to maize seedlings.LaCl3 had some effects on the contents of MDA and praline and the protective enzyme activities of POD and CAT in the leaves of maize seedlings under Hg stress.The research provided reference basis for agricultural application of rare earth elements.

相似文章

导出引用
计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46