Which soil Cu pool governs phytotoxicity in field-collected soils contaminated by copper smelting activities in central Chile?

Lillo-Robles, Felipe; Tapia-Gatica, Jaime; Díaz-Siefer, Pablo; Moya, Héctor; Youlton, Cristián; Celis‐Diez, Juan L.; Santa-Cruz, Javier; Ginocchio, Rosanna; Sauvé, Sébastien; Brykov, Vasyl; Neaman, Alexander

doi:10.1016/j.chemosphere.2019.125176

Cited by 31 publications

(11 citation statements)

References 39 publications

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“…Surprisingly, we found that there is little data available on Cu toxicity thresholds-like effective concentration (ECx), lowest observed effect concentration (LOEC), and no observed effect concentration (NOEC)-for fieldcontaminated soils. Six studies were found for plants (Hamels et al 2014;Kolbas et al 2014;Kolbas et al 2018;Lillo-Robles et al 2020;Mondaca et al 2017;Verdejo et al 2015), five for earthworms (Delgadillo et al 2017;Konečný et al 2014;Mirmonsef et al 2017;Scott-Fordsmand et al 2000;Van Zwieten et al 2004), and only three for soil microorganisms (Arthur et al 2012;Oorts et al 2006;Sauvé 2006). A specific EC x value for a given species, endpoint, and bioassay exposition time may have limited relevance from an agricultural or ecological point of view (Delgadillo et al 2017;Mondaca et al 2017).…”

Section: Effects Of Copper Contamination In Soil Organismsmentioning

confidence: 99%

Role of Leaf Litter on the Incorporation of Copper-Containing Pesticides into Soils Under Fruit Production: a Review

Schoffer

Sauvé

Neaman

et al. 2020

J Soil Sci Plant Nutr

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High soil copper may result in adverse effects on natural and agricultural systems. Copper-based pesticides have long been used for control of microbial diseases on fruit tree productive systems. Although copper is relatively safe from a human health management point of view, it can be accumulated in agricultural soils, affecting soil microbiota and litter degradation. The purpose of this review was to collect the available information to critically discuss the role that litter may play in fruit tree productive systems, in terms of copper incorporation into the soil, where this element is used as a pesticide. To achieve this objective, we focused our review on (1) soil contamination by copper-based pesticides in fruit production systems, (2) soil copper behavior, (3) effects of copper contamination on soil organisms, and (4) copper-litter relation in soil. From this review, we can suggest that (1) litter is the main sink of metals coming from atmospheric fallout because it is a good complexing agent of cations, (2) litter decomposition depends on its quality and in soil microbial activity, and (3) soil and litter microbial activity is negatively affected by soil copper enrichment. Thus, under uncontrolled applications of copper-based pesticides in fruit tree productive systems, copper soil enrichment will generate a decrease in microbial activity, diminishing litter breakdown and decreasing dissolved organic carbon formation. This process will also decrease the soluble copper incorporation into the soil; however, this assumption remains unevaluated.

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Section: Effects Of Copper Contamination In Soil Organismsmentioning

confidence: 99%

Role of Leaf Litter on the Incorporation of Copper-Containing Pesticides into Soils Under Fruit Production: a Review

Schoffer

Sauvé

Neaman

et al. 2020

J Soil Sci Plant Nutr

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“…Second, the chemical form in which the metal is deposited into the soil also affects the level of soil metal toxicity. Third, field‐contaminated soils might not offer the range of metal contamination necessary to conduct ecotoxicological studies (e.g., Lillo‐Robles et al 2020). In the case of plants, fluctuating nutrient availability in soil may also affect responses, in addition to soil metal toxicity.…”

Section: Comparison Of Median Effect Concentration (Ec50) Values In Smentioning

confidence: 99%

“…Nevertheless, few such studies have been performed. For instance, we have found only 6 studies in which copper phytotoxicity thresholds have been determined using fieldcontaminated soils (Hamels et al 2014;Kolbas et al 2014Kolbas et al , 2018 Verdejo et al 2015;Mondaca et al 2017;Lillo-Robles et al 2020). Likewise, we are aware of only one study on the arsenic toxicity threshold for Eisenia fetida in fieldcontaminated soils (Bustos et al 2015).Although the importance of using field-contaminated soils-rather than spiked soils-is evident, interpretation of the results from field-contaminated soils presents several difficulties.…”

mentioning

confidence: 99%

Analyzing Soil Metal Toxicity: Spiked or Field‐Contaminated Soils?

Neaman

Selles

Martı́nez

et al. 2020

Enviro Toxic and Chemistry

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“…Thus, the results observed in the present study can be explained by the aforementioned quantity, intensity, and capacity factors. Specifically, in highly polluted soils, metal concentrations in the soil solution of the whole soil were buffered by desorption-dissolution reactions from the soil solid phase (Lillo-Robles et al 2020;Sauvé 2002), causing high phytotoxicity and, therefore, poor root growth. Importantly, the radicle's ability to absorb metals is confirmed in other studies (e.g., Zhang et al 2020).…”

Section: Differences In Root Elongation Results Under the Two Protocolsmentioning

confidence: 99%

Root Elongation Method for the Quality Assessment of Metal-Polluted Soils: Whole Soil or Soil-Water Extract?

Prudnikova

Neaman

Терехова

et al. 2020

J Soil Sci Plant Nutr

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Root elongation method may be implemented using two internationally accepted protocols: exposing plants to either soil-water extract or whole soil. But which of the two protocols is more suitable for root elongation analysis undertaken for the quality assessment of metal-polluted soils? Soils were sampled at various distances from the site of the Middle Urals Copper Smelter located in Russia. White mustard was used as a bioindicator. We observed considerable differences in root elongation under the two protocols. In plants grown in whole soil, root length inversely correlated with pollution index, but in soil-water extract, metal concentrations had no effect on root length. Nutrient and metal concentrations in the soil-water extract were not buffered, due to the absence of the solid soil phase. It is for this reason that in highly polluted soils, root growth was greater in soil-water extracts rather than in whole soils, whereas in background soils (in the absence of toxicity), root growth was greater in whole soils compared with soil-water extracts. The quantity, intensity, and capacity factors are a plausible explanation for the differences in root length between the two protocols. The soil-water extract does not represent actual soil with respect to the desorptiondissolution reactions that take place between the soil solid phase and the soil solution. For this reason, whole soil protocol should be used for measuring root elongation given that only under this protocol, direct contact between metal-polluted soil and test organisms correctly replicates the risks inherent in the actual soil habitat.

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Which soil Cu pool governs phytotoxicity in field-collected soils contaminated by copper smelting activities in central Chile?

Cited by 31 publications

References 39 publications

Role of Leaf Litter on the Incorporation of Copper-Containing Pesticides into Soils Under Fruit Production: a Review

Role of Leaf Litter on the Incorporation of Copper-Containing Pesticides into Soils Under Fruit Production: a Review

Analyzing Soil Metal Toxicity: Spiked or Field‐Contaminated Soils?

Root Elongation Method for the Quality Assessment of Metal-Polluted Soils: Whole Soil or Soil-Water Extract?

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