Effects of clonal integration, nutrients and cadmium on growth of the aquatic macrophyte Pistia stratiotes

作     者：Michael Opoku Adomako Peter Alpert Dao-Lin Du Fei-Hai Yu Michael Opoku Adomako;Peter Alpert;Dao-Lin Du;Fei-Hai Yu

作者机构：Institute of Wetland Ecology&Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhou 318000China Institute of Environment and EcologyAcademy of Environmental Health and Ecological SecuritySchool of the Environment and Safety EngineeringJiangsu UniversityZhenjiang 212013China Department of BiologyUniversity of MassachusettsAmherstMA 01003USA 

出 版 物：《Journal of Plant Ecology》 (植物生态学报（英文版）)

年 卷 期：2020年第13卷第6期

页      面：765-772页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：supported by the National Natural Science Foundation of China(31761123001,31870610) the Joint Fund of the Zhejiang Provincial Natural Science Foundation(LTZ20C030001) the Ten Thousand Talent Program of Zhejiang Province(2018R52016) 

主　　题：bioremediation clonal fragmentation eutrophication floating plant toxic metal 

摘      要：Aims Many wetlands are polluted with both nutrients and toxic metals and vegetated largely by clonal *** hypothesized that eutrophication and clonal integration can increase phytoremediation of toxic metal pollution by increasing plant growth,even under the stress imposed by *** To test this hypothesis,single ramets of the common,widespread,floating,stoloniferous plant Pistia stratiotes L.,were grown for 42 days at two levels of nutrient availability with and without 0.6 mg L^(-1) *** were either severed from their vegetative offspring to prevent clonal integration or left connected,and severed offspring were either removed to eliminate intraclonal competition or left in *** Findings Plants subjected to cadmium addition accumulated almost twice as much dry mass if given the higher nutrient level,due mainly to a doubling of the number of clonal *** had little effect on the final mass of the parent plus offspring *** offspring following severance had no effect on the final mass of the parental ramet in the presence of added cadmium,but it did increase the final mass of the parent in the absence of *** results support the hypothesis that eutrophication can increase remediation of toxic metal pollution by aquatic macrophytes but provided no evidence that clonal integration can affect *** such as *** may help remediate co-pollution of wetlands with toxic metals and nutrients,and fragmentation of clones may not affect their remediation capacity.