文献类型：期刊文献

中文题名：铝、镉胁迫对空心菜生长及抗氧化特性的影响

英文题名：Effect of Aluminum and Cadmium Treatments on the Growth and Antioxidant Property of Water Spinach

作者：郭天荣[1];陈丽萍[1];冯其芳[1];戚志伟[1];沈佳辉[1]

机构：[1]绍兴文理学院生命科学学院,浙江绍兴312000

年份：2015

卷号：0

期号：3

起止页码：571

中文期刊名：核农学报

外文期刊名：Acta Agriculturae Nucleatae Sinica

收录：CSTPCD、、北大核心2014、CSCD2015_2016、北大核心、CSCD

基金：浙江省自然科学基金资助项目（Y3100450）

语种：中文

中文关键词：铝;镉;空心菜;生长;氧化胁迫

外文关键词：aluminum; cadmium; water spinach; plant growth; oxidative stress

中文摘要：为明确铝（Al）、镉（Cd）胁迫对空心菜植株生长、有害元素积累和抗逆生理代谢的影响,采用营养液培养试验,模拟酸性环境（p H值4.5）,对空心菜幼苗进行Al、Cd单一及复合处理3周,测定相关指标。试验结果表明,与对照组相比,单独10μmol·L-1Al和0.5μmol·L-1Cd处理促进空心菜植株生长;高浓度Al（100μmol·L-1）、Cd（5μmol·L-1）胁迫导致植株根系和地上部Al、Cd大量积累,诱导叶片中超氧化物歧化酶（SOD）和过氧化物酶（POD）活性增强,丙二醛（MDA）含量增多;叶片叶绿素含量明显降低,植株生物量大幅下降。Al、Cd复合处理植株各器官有害元素含量均显著高于单一毒害处理,尤其是根系,并诱发更严重的植株生长抑制效应和氧化胁迫,表明Al、Cd对空心菜植株的生长抑制和氧化胁迫具有协同性。本试验研究结果可为Al、Cd复合污染酸性菜园蔬菜安全栽培提供理论指导。

外文摘要：Hydroponic experiment was focused on the effect of aluminum（ Al） and cadmium（ Cd） single and combined treatments on the plant growth,toxic metals accumulation and physiological metabolisms for stress resistance in water spinach after cultured well for 3 weeks in p H 4. 5 solution simulating acid soil. The results showed that seedlings growth,presented as dry weight of roots and shoots,as well as chlorophyll content were enhanced by 10 μmol·L- 1Al or 0. 5μmol·L- 1Cd single treatments. However,the stress treatments of 100 μmol ·L- 1Al and 5. 0 μmol ·L- 1Cd both increased Al or Cd accumulation in plants,enhanced the activities of peroxidase（ POD） and superoxide dismutase（ SOD）,as well as the contents of malondialdehyde（ MDA） in leaves,but decreased leaf chlorophyll content and plant dry weight. Furthermore,the combined stress of Al and Cd caused more the accumulations of Al and Cd both in roots and shoots,and induced more severe growth inhibition and oxidative stress as compared with metals single treatment,indicating that Al and Cd was synergistic in inhibiting plant growth and inducing oxidative stress in water spinach.