Autotoxicity of Phthalate Esters in Tobacco Root Exudates:Effects on Seed Germination and Seedling Growth

作     者：DENG Jiajun ZHANG Yanling HU Jiwei JIAO Jiaguo HU Feng LI Huixin ZHANG Shixiang 

作者机构：Soil Ecology LaboratoryCollege of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095(China) ~hengzhou Tobacco Research Institute of CNTCZhengzhou 450001(China) Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological EnvironmentGuizhou Nounal UniversityGuiyang 550001(China) Testing Center of Agro-Product Quality and Safety of Jiangxi ProvinceNanchang 330046(China) Key Laboratory of Eco-Environmental and Tobacco Leaf Quality of CNTCZhengzhou 450001(China) 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2017年第27卷第6期

页      面：1073-1082页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the Key Laboratory Project of CNTC(No.110201603010) the Scientific and Technological Project of Zhengzhou Tobacco Research Institute of CNTC(No.112011CZ0580) 

主　　题：autotoxins germination index germination potential germination rate vigor index 

摘      要：Autotoxicity is one of the major factors that impede continuous *** is defined as the toxic influence of chemicals released from one plant species on the germination and growth of individuals of the same ***, in order to exam the autotoxicity of tobacco root exudates, root exudates were collected from tobacco plants grown both in cultural solution and on natural *** ultraperformance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry, main autotoxic chemical substances in the root exudates were *** autotoxic effects of suspected autotoxins on seed germination(including germination rate,germination potential, germination index, and vigor index) and seedling growth were *** phthalate(or diisobutyl phthalate), dioctyl phthalate, and diisooctyl phthalate were identified in tobacco root *** was observed that high concentrations(greater than 0.5 mmol L^(-1)) of each identified phthalate ester caused significant(P 0.05) inhibition of tobacco seed germination and seedling *** can be concluded that phthalate esters such as dibutyl phthalate, diisobutyl phthalate, and diisooctyl phthalate in tobacco root exudates may play an important role in tobacco autotoxicity.