Comparison of nitrification inhibitors for mitigating cadmium accumulation in pakchoi and their associated microbial mechanisms

作     者：Wenxin DU Qingyang ZHU Xiangting JING Weijie HU Yao ZHUANG Yijie JIANG Chongwei JIN Wenxin DU;Qingyang ZHU;Xiangting JING;Weijie HU;Yao ZHUANG;Yijie JIANG;Chongwei JIN

作者机构：State Key Laboratory of Plant Environmental ResilienceZhejiang UniversityHangzhou 310058China 

出 版 物：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 (浙江大学学报（英文版）B辑（生物医学与生物技术）)

年 卷 期：2024年第25卷第9期

页      面：773-788页

核心收录：

学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0902[农学-园艺学] 090202[农学-蔬菜学] 0713[理学-生态学] 

基　　金：Zhejiang Provincial Natural Science Foundation of China(No.LZ21D010010) 

主　　题：Cadmium(Cd) Nitrification inhibitor Soil microbial structure Safe crop production 

摘      要：The use of nitrification inhibitors has been suggested as a strategy to decrease cadmium(Cd)accumulation in ***,the most efficient nitrification inhibitor for mitigating crop Cd accumulation remains to be elucidated,and whether and how changes in soil microbial structure are involved in this process also remains *** address these questions,this study applied three commercial nitrification inhibitors,namely,dicyandiamide(DCD),3,4-dimethylpyrazole phosphate(DMPP),and nitrapyrin(NP),to *** results showed that both DCD and DMPP(but not NP)could efficiently decrease Cd concentrations in pakchoi in urea-and ammonium-fertilized *** addition,among the three tested nitrification inhibitors,DMPP was the most efficient in decreasing the Cd concentration in *** nitrification inhibitors decreased pakchoi Cd concentrations by suppressing acidification-induced Cd availability and reshaping the soil microbial structure;the most effective nitrification inhibitor was *** oxidation generates the most protons during nitrification and is inhibited by nitrification *** in environmental factors and predatory bacterial abundance caused by the nitrification inhibitors changed the soil microbial structure and increased the potential participants in plant Cd *** summary,our study identified DMPP as the most efficient nitrification inhibitor for mitigating crop Cd contamination and observed that the soil microbial structural changes caused by the nitrification inhibitors contributed to decreasing Cd concentration in pakchoi.