Intercropping of Sonchus asper and Vicia faba affects plant cadmium accumulation and root responses

作     者：Yanqun ZU Li QIN Fangdong ZHAN Jiong WU Yuan LI Jianjun CHEN Jixiu WANG Wenyou HU Yanqun ZU;Li QIN;Fangdong ZHAN;Jiong WU;Yuan LI;Jianjun CHEN;Jixiu WANG;Wenyou HU

作者机构：College of Resources and EnvironmentYunnan Agricultural UniversityKunming 650201(China) Institute of Soil ScienceChinese Academy of SciencesNanjing 210008(China) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2020年第30卷第4期

页      面：457-465页

核心收录：

学科分类：07[理学] 0818[工学-地质资源与地质工程] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 0713[理学-生态学] 

基　　金：This research was supported by the Yunnan Provin-cial Key Research and Development Project,China(No.2019BC001-04) the National Natural Science Foun-dation of China(No.41867055) 

主　　题：organic acid phytoremediation root length root surface area transfer coefficient 

摘      要：The cadmium(Cd)pollution of farmland soil is serious in the *** present study investigated the effects of intercropping Vicia faba and the hyperaccumulator Sonchus asper on the Cd accumulation and root responses(morphology and secreted organic acids)of plants grown on soil from a mining area in Yunnan Province,China,under different Cd stress levels(0,50,100,and 200 mg kg-1).Intercropping increased the biomass of both *** and ***,as well as the Cd accumulation and Cd transfer coefficient from roots to shoots of ***,but decreased those of *** in the 200 mg kg-1Cd *** Cd concentrations in roots,shoots,and grains from intercropped *** plants were positively correlated(P0.05)with the N,N-diethyl phenylacetamide-extractable Cd content in *** the 50 mg kg-1Cd treatment,intercropping decreased citric and malic acids in root secretions of *** *** secreted more citric,oxalic,acetic,and malic acid compared with *** also increased root length and root surface area of both *** and *** 50 mg kg-1Cd,root length for *** was higher than that at 0 mg kg-1Cd,whereas *** roots had significantly decreased length and mean *** of *** and *** is suggested as an in situ phytoremediation strategy of Cd-contaminated soils and may improve the food quality of ***.