Effects of Catalase and Ascorbate Peroxidase on the Root Growth of Rice under Cadmium Stress

作     者：宋新华 王凯 郭蕾蕾 赵凤云 

作者机构：山东理工大学生命科学学院山东淄博255049 淄博市科学技术情报研究所山东淄博255040 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2011年第12卷第9期

页      面：1256-1259页

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Supported by National Natural Science Foundation of China(30671126) 

主　　题：Cd stress Catalase Ascorbate peroxidase 

摘      要：[Objective] The research aimed to study the correlations between catalase（CAT） and ascorbate peroxidase（ASP） and the growth and development of rice roots under cadmium stress.[Method] Taking rice variety Zhonghua No.11 as materials,the changes of rice seedlings under the treatment conditions of Cd,Cd＋CAT inhibitor,Cd＋APX inhibitor were studied.[Result] Under Cd stress,inhibition of CAT activity caused the significant inhibition on the growth of aerial parts,decreased the number of adventitious roots and lateral roots,but it can significant promote the elongation growth of adventitious roots and lateral ***,the length of the first lateral root from root tip on the primary roots and adventitious roots was also increased than *** APX activity was inhibited,the growth changes of rice were similar with that treated by CAT inhibitor.[Conclusion] CAT and APX may play important roles in the regulation of rice root system growth in both non-stress and Cd-stressed rice