Tomato and parsley growth, arsenic uptake and translocation in a contaminated amended soil

Influence of compost of sewage sludge and low-quality water on pesticide uptake by tomato plants grown in an iron mine soil

“…Plants showed chlorotic leaves and leaves displayed a dark pigmentation typical of arsenic toxicity (Kabata-Pendias and Pendias 2001). Similar results were reported by Madeira et al (2012) in the same species growing in mining soils without amendments. Alquife soils have a basic pH (8.6) with low level of P and K and organic carbon, enriched in Fe, Mn and low potentially hazardous microelements (Sevilla-Perea and Mingorance 2015) except for As (Aguilar et al 1999).…”

“…These amendments usually improve soil structure, water-holding capacity, cation exchange capacity and nutrient contents (Pardo et al 2011). Application of amendments has shown contradictory results for the mitigation of the initial tailing toxicity because, depending on the amendment, plant availability of metals/ metalloids and organic contaminants can decrease or increase (Boisson et al 1999;Clemente et al 2007;Santibáñez et al 2008;Nwachukwu and Pulford 2009;Madeira et al 2012). Consequently, the selection of appropriate amendments could reduce the toxicity of metals/ metalloids and organic pollutants and promote plant growth and the quality of crops.…”

“…Studies in soils with current and ancient mining activities have been mainly focused on metal/metalloid accumulation by plants and strategies to reduce their concentration (Santibáñez et al 2008;Monaci et al 2011;Madeira et al 2012;Abreu et al 2014). The reason is that their transfer to the food chain has been recognised as a risk by the European Union, which has set maximum levels with a view to reducing their presence in foodstuffs (Commission of the European Communities 2006).…”

“…was chosen as a model crop plant, as well as the application of two pesticides, fenarimol (FEN) and thiacloprid (THC), to evaluate uptake of organic compounds. Tomato was chosen because it is a vegetable species with an economic return, whose consumption, as shown by Madeira et al (2012), would not induce chronical health problems due to the As content. We decided to use compost because it promoted tomato development in a previous screening ) and because it is a stabilised amendment.…”

Accumulation of arsenic in plants from arsenic contaminated irrigation water

“…Gerekli fosfor karşılandığında ise taşınım daha düşük düzenlenmekte ve As alımı bloke edilmektedir. Bitki toleransı, arsenat (V)'in arsenit (III)'e glutathione ve fitokelatinler ile kompleks oluşturarak indirgenmesi ve böylece elementin toksisite etkileri olmadan bitkide birikimini sağlayan, arseniğin daha düşük toksisiteye sahip forma metabolize edilmesinden kaynaklanabileceği açıklanmıştır [66].…”