Use of chlorophyll fluorescence as a tool for determination of herbicide toxic effect: Review

Juneau, Philippe; Qiu, Bao‐Sheng; Deblois, Charles P.

doi:10.1080/02772240701561569

Cited by 74 publications

(38 citation statements)

References 79 publications

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“…In our study, the NPQ was even more sensitive than qN to metal stress, so it can, therefore be considered the most sensitive photosynthesis-related parameter evaluated. This high sensitivity of NPQ versus qN was reported recently in a review study about the use of PAM fluorometry to assess herbicides toxicity on monocultures (Juneau et al, 2007). In contrast, slight effects were observed in the U M .…”

Section: Discussionmentioning

confidence: 79%

“…The U 0 M decreased (23 and 8% in the Zn and Zn ? Cd treatments, respectively) indicating an inhibition in the electron transport flow during the light-dependent photosynthesis activity (Juneau et al, 2007). This effect could also be attributed to the 'in vivo' substitution of magnesium, the central atom of chlorophyll, by heavy metals leading to a breakdown in photosynthesis (Küpper et al, 1998;Zvezdanovic & Markovic, 2009).…”

Section: Discussionmentioning

confidence: 96%

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Chl-a fluorescence parameters as biomarkers of metal toxicity in fluvial biofilms: an experimental study

et al. 2011

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A study was carried out to evaluate the sensitivity of different chlorophyll-a (chl-a) fluorescence parameters measured in freshwater biofilms as metal pollution biomarkers of short-and long-term metal exposures at environmentally realistic concentrations. A microcosm experiment was performed using indoor channels. Mature biofilms were exposed from hours to weeks to three different treatments: NoMetal, Zn (400 lg l -1 ); and Zn plus Cd (400 lg l -1 and 20 lg l -1 , respectively). Metal concentration was based on a real case study: the Riou-Mort River (France). Biofilms exposed to Zn bioaccumulated similar Zn contents per dry weight to those exposed to the mixture (Zn plus Cd) causing a similar inhibition of the effective quantum yield ðU 0 M Þ during the first hours of exposure. A reduction of the algal biomass, a shift in the community composition (a high reduction of diatoms), a reduction of the maximal quantum yield (U M ) and a strong reduction of non-photochemical quenching (NPQ) were observed from day 14 until the end of the experiment (35 days). The results indicate that the effects of the metal mixture present in the Riou-Mort on biofilms could be attributed to Zn toxicity. The use of a set of chl-a fluorescence measurements, including photochemical and NPQ parameters, are recommended as a reliable biomarker tool box to evaluate both short-and long-term effects of metals on biofilms containing oxygenic photoautotrophs, suggesting its use in field applications.

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Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 96%

Chl-a fluorescence parameters as biomarkers of metal toxicity in fluvial biofilms: an experimental study

et al. 2011

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“…Pulse Amplitude Modulated fluorometry (PAMF) is a powerful tool for monitoring the effects of herbicides on photosynthetic organisms based on the measurement of in vivo chlorophyll a (Chla) fluorescence (Juneau et al, 2007). It is widely used to assess the toxicity of various substances targeting PSII (Corcoll et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Herbicide toxicity on river biofilms assessed by pulse amplitude modulated (PAM) fluorometry

et al. 2015

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“…Due to the central role of aquatic photosynthetic organisms for global primary production, the identification of their physiological responses to these changes is essential to our understanding of how these natural and anthropogenic alterations of the aquatic ecosystems will affect the carbon-climate system at a global scale. Parameters linked to the photosynthetic activity of plants have been shown to be useful to study responses to stress conditions (Juneau et al, 2007), mainly because photosynthesis is directly associated with growth and primary production. Several studies have examined the effects of climatic factors (such as temperature and irradiance) on photosynthesis of aquatic organisms (Huner et al, 2003;Necchi Jr, 2004).…”

Section: Introductionmentioning

confidence: 99%

Temperature and Light Modulation of Herbicide Toxicity on Algal and Cyanobacterial Physiology

Gomes

Juneau

2017

Front. Environ. Sci.

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HIGHLIGHTS• We reviewed the interaction between light, temperature and herbicides on algal and cyanobacterial physiology.• Temperature is the main factor affecting herbicide toxicity to algae and cyanobacteria.• Changes in light environment may modulate the effects of photosynthesis-targeting herbicides.Important interactions between climatic parameters and herbicide toxicity have been discussed in the literature. As climate changes are expected to influence the growth conditions of aquatic photosynthetic organisms over the next century by modifying the physicochemical parameters of the environment (such as temperature and incident light characteristics), the following questions arise: How will variations in climatic conditions influence herbicide toxicity in algae and cyanobacteria? Are these coupled effects on aquatic photosynthetic organism physiology antagonistic, additive, or synergistic?We discuss here the physiological responses of algae and cyanobacteria to the combined effects of environmental changes (temperature and light) and herbicide exposure. Both temperature and light are proposed to influence herbicide toxicity through acclimation processes that are mainly related to cell size and photosynthesis. Algal and cyanobacterial responses to interactions between light, temperature, and herbicides are species-specific, making it difficult today to establish a single model of how climate changes will affect toxicity of herbicides. Acclimation processes could assure the maintenance of primary production but total biodiversity should decrease in communities exposed to herbicides under changing temperature and light conditions. The inclusion of considerations on the impacts of environmental changes on toxicity of herbicides in water quality guidelines directed toward protecting aquatic life is now urgently needed.Keywords: environment, toxicity, hazardous, pollutants, algae, cyanobacteria Gomes and JuneauHerbicides/Climate Changes on PhytoplanktonGraphical Abstract | Changes in temperature and light conditions in water systems over the next century will drive physiological responses of algal and cyanobacterial community to herbicides, by antagonistic, additive, or synergic effects with these pollutants.

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Use of chlorophyll fluorescence as a tool for determination of herbicide toxic effect: Review

Cited by 74 publications

References 79 publications

Chl-a fluorescence parameters as biomarkers of metal toxicity in fluvial biofilms: an experimental study

Chl-a fluorescence parameters as biomarkers of metal toxicity in fluvial biofilms: an experimental study

Herbicide toxicity on river biofilms assessed by pulse amplitude modulated (PAM) fluorometry

Temperature and Light Modulation of Herbicide Toxicity on Algal and Cyanobacterial Physiology

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