Effects of Exogenous 5-Aminolevulinic Acid and 24-Epibrassinolide on Cd Accumulation in Rice from Cd-Contaminated Soil

作     者：WANG Feijuan ZHANG Yiting GUO Qinxin TAN Haifeng HAN Jiahui LIN Haoran WEI Hewen XU Guangwei ZHU Cheng 

作者机构：Key Laboratory of Marine Food Quality and Hazard Controlling Technology of Zhejiang ProvinceCollege of Life SciencesChina Jiliang UniversityHangzhou 310018China Jinhua Inspection and Testing Institute of Food and Drug ControlJinhua 321000China 

出 版 物：《Rice science》 (水稻科学（英文版）)

年 卷 期：2018年第25卷第6期

页      面：320-329页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the Natural Science Foundation of Zhejiang Province,China(Grant No.LY17C020005) the Key Research and Development Project of Zhejiang Province,China(Grant No.2015C03020-4) the National Nature Science Foundation of China(Grant No.31401356) Jinhua Science and Technology Project(Grant No.2015-2-012) the National Training Program for College Students to Innovate and Start Enterprise(Grant No.201710356013) 

主　　题：rice Cd-contaminated soil 5-aminolevulinic acid 24-epibrassinolide Cd accumulation 

摘      要：High grain-Cd-accumulating rice variety Yongyou 9 was planted in Cd-contaminated farmland in Taizhou City, Zhejiang Province, China to study the effects of 5-aminolevulinic acid(ALA) and24-epibrassinolide(EBR) on Cd accumulation in brown rice. Results showed that the exogenous ALA and EBR had no significant effects on agronomic traits, soil pH and total Cd content in soil, but had some effects on the available Cd content in soil, and significantly influenced the Cd accumulation in the different parts of rice. Results also showed that 100 mg/L exogenous ALA significantly reduced the Cd accumulation in brown rice to blow the food safety standard(0.2 mg/kg), and also significantly reduced the Cd contents in the roots and culm of rice. However, 200 mg/L exogenous ALA treatment increased the Cd content in brown rice remarkably. In addition, 0.15 mg/L EBR treatment increased Cd accumulation in roots, culm, leaves and brown rice notably, whereas 0.30 mg/L exogenous EBR treatment reduced the Cd accumulation in brown rice properly, but it was not significant. Therefore,proper concentration of ALA can effectively reduce the Cd accumulation in brown rice, which can be used as an effective technical method for the safe production of rice in Cd polluted farmland.