DOI: 10.1016/j.ecolind.2019.106045
论文题名: The effect of heavy metal contamination pre-conditioning in the heat stress tolerance of native and invasive Mediterranean halophytes
作者: Carreiras J. ; Alberto Pérez-Romero J. ; Mateos-Naranjo E. ; Redondo-Gómez S. ; Rita Matos A. ; Caçador I. ; Duarte B.
刊名: Ecological Indicators
ISSN: 1470160X
出版年: 2020
卷: 111 语种: 英语
英文关键词: Intraspecific variability
; Local adaptation
; Non-indigenous species
; Warming stress
Scopus关键词: Fatty acids
; Heavy metals
; Plants (botany)
; Thermal stress
; Wetlands
; Biochemical indicators
; Halimione portulacoides
; Heavy metal contamination
; Intergovernmental panel
; Intraspecific variability
; Local adaptation
; Nonindigenous species
; Oxidative stress biomarkers
; Contamination
; Halimione portulacoides
; Spartina patens
英文摘要: Salt marshes are worldwide recognized for their unique and important ecological role. According to the Intergovernmental Panel on Climatic Change (IPCC), the frequency and intensity of warming events will rise due to global changes. Halophyte plants, inhabiting salt marshes are known for being highly tolerant to various abiotic stresses, nonetheless, although it has been acknowledged that the tolerance response is species specific there could also be differences at the population level. The present work aims to determine if the life history of two halophytes (Halimione portulacoides and Spartina patens), namely in terms of contaminant exposure, influences inter-populational heat tolerance. For this purpose, individuals from both species collected at pristine and contaminated sites were exposed to normal and increased temperature conditions, and its physiological fitness evaluated throughout biochemical and biophysical analysis. The photobiological traits, pigment and fatty acid profiles and oxidative stress biomarkers analyses of warming treated individuals, indicate that chronic heavy metal pre-conditioning significantly influences the heat stress tolerance of the native halophyte plants. Halimione portulacoides individuals collected at heavy metal contaminated salt marsh appeared more tolerant to heat stress. On the other hand, the invasive S. patens from the pristine site showed higher tolerance to heat stress. Thus, the pre-conditioning influences the tolerance mechanisms can affect the way in which salt marsh communities will evolve in the future, possibly being different through salt marshes. The contaminated marsh can be more resilient to invasion than the non-contaminated marsh, since the native species has benefited from this pre-conditioning. Moreover, and from the ecophysiological point the set of biophysical and biochemical indicators were tested, show a high efficiency in describing the ecophysiological traits, both between species and populations, facing different pre-conditioning histories. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158566
Appears in Collections: 气候变化与战略
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作者单位: MARE – Marine and Environmental Sciences Centre, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Lisboa, 1749-016, Portugal; Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av. Reina Mercedes s/n, Sevilla, 41012, Spain; BioISI—Biosystems and Integrative Sciences Institute, Plant Functional Genomics Group, Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Lisboa, 1749-016, Portugal
Recommended Citation:
Carreiras J.,Alberto Pérez-Romero J.,Mateos-Naranjo E.,et al. The effect of heavy metal contamination pre-conditioning in the heat stress tolerance of native and invasive Mediterranean halophytes[J]. Ecological Indicators,2020-01-01,111