DOI: 10.1016/j.chemosphere.2019.125552
论文题名: Genotypes of the aquatic plant Myriophyllum spicatum with different growth strategies show contrasting sensitivities to copper contamination
作者: Roubeau Dumont E. ; Larue C. ; Michel H.C. ; Gryta H. ; Liné C. ; Baqué D. ; Maria Gross E. ; Elger A.
刊名: Chemosphere
ISSN: 456535
出版年: 2020
卷: 245 语种: 英语
Scopus关键词: Conservation
; Copper
; Natural resources
; Risk assessment
; Strategic planning
; Ecological risk assessment
; Ecosystem resilience
; Genotypic variability
; Genotypic variations
; Morphological traits
; Myriophyllum spicatum
; Physiological markers
; Resource conservation
; Aquatic ecosystems
; copper
; adaptation
; aquatic ecosystem
; aquatic plant
; copper
; ecosystem resilience
; genotoxicity
; genotype
; global change
; growth rate
; morphology
; pollution effect
; risk assessment
; Article
; biomass production
; genotype
; Myriophyllum spicatum
; nonhuman
; plant
; plant growth
; sensitivity analysis
; shoot
; Myriophyllum spicatum
英文摘要: Genotypic variability has been considered for years as a key attribute in species adaptation to new environments. It has been extensively studied in a context of chemical resistance, but remains poorly studied in response to chemical exposure in a context of global change. As aquatic ecosystems are particularly affected by environmental changes, we aimed to study how genotypic variability could inflect the sensitivity of aquatic plants to chemicals. Seven genotypes of Myriophyllum spicatum were exposed to three copper concentrations at 0, 0.15 and 0.5 mg/L. The sensitivity of the different genotypes was assessed through several endpoints such as relative growth rate (RGR) and morphological traits, as well as physiological markers, such as plant biomacromolecular composition. Our results showed that genotypes exhibited significant differences in their life-history traits in absence of chemical contamination. Some trait syndromes were observed, and three growth strategies were identified: (1) biomass production and main shoot elongation, (2) dry matter storage with denser whorls to promote resource conservation and (3) lateral shoot production. An up to eightfold difference in sensitivity for growth-related endpoints was observed among genotypes. Differences in sensitivity were partly attributed to morphological life-history traits. Our results confirm that genotypic variability can significantly affect M. spicatum sensitivity to Cu, and may influence the outcomes of laboratory testing based on the study of one single genotype. We recommend including genotypic variation as an assessment factor in ecological risk assessment and to study this source of variability more in depth as a possible driver of ecosystem resilience. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158460
Appears in Collections: 气候变化与战略
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作者单位: EcoLab, Université de Toulouse, CNRS, Toulouse, France; Beamline ID21, ESRF-The European Synchrotron, CS40220, Grenoble Cedex 9, 38043, France; Laboratoire Evolution & Diversité Biologique (EDB UMR 5174), Université de Toulouse, CNRS, IRD, UPS, 118 route de Narbonne, Bat 4R1, Toulouse, 31062, France; CIRIMAT, UMR CNRS 5085/LCMI, Université Paul-Sabatier, Toulouse Cedex 4, F 31062, France; LIEC, Université de Lorraine, CNRS, UMR, Metz, Lorraine 7360, France
Recommended Citation:
Roubeau Dumont E.,Larue C.,Michel H.C.,et al. Genotypes of the aquatic plant Myriophyllum spicatum with different growth strategies show contrasting sensitivities to copper contamination[J]. Chemosphere,2020-01-01,245