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Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia

Delias, Dominique S. ; Da-Silva, Cristiane Jovelina ; Martins, Angelita C. ; de Oliveira, Denise S. C. ; do Amarante, Luciano

Environmental science and pollution research international, 2022-03, Vol.29 (15), p.22427-22438 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia
Autor: Delias, Dominique S. ; Da-Silva, Cristiane Jovelina ; Martins, Angelita C. ; de Oliveira, Denise S. C. ; do Amarante, Luciano
Assuntos: Accumulation ; Antioxidants ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; Combined stress ; Earth and Environmental Science ; Ecotoxicology ; Environment ; Environmental Chemistry ; Environmental Health ; Environmental science ; Ethylenediaminetetraacetic acids ; Gas exchange ; Glycine max ; Hydroponics ; Hypoxia ; Iron ; Leaves ; Magnesium ; Minerals ; Nitrogen ; Nutrient concentrations ; Oxidative Stress ; Photosynthesis ; Photosynthetic pigments ; Physiological responses ; Pigments ; Plant growth ; Plant Leaves ; Plant Roots ; Plants ; Plants (botany) ; Potassium ; Research Article ; Roots ; Soybeans ; Toxicity ; Waste Water Technology ; Water Management ; Water Pollution Control
É parte de: Environmental science and pollution research international, 2022-03, Vol.29 (15), p.22427-22438
Descrição: Iron toxicity is a major challenge faced by plants in hypoxic soils; however, the consequences of such combined stress for soybean ( Glycine max ) remain to be determined. Here we assessed the physiological responses of soybean plants exposed to hypoxia and a high concentration of iron. Soil-grown plants cultivated in a greenhouse until the vegetative stage were transferred to a hydroponic system containing nutrient solution and subjected to two oxygen conditions (normoxia (6.2 mg L -1 ) and hypoxia (0.33 mg L -1 )) and two iron concentrations (Fe-EDTA) (0.09 and 1.8 mM) for 72 h. During hypoxia, high concentrations of iron in the nutrient solution resulted in increased iron accumulation in roots and leaves. Under this condition, the concentrations of zinc, nitrogen, potassium, and calcium decreased in the roots, while the concentration of nitrogen and magnesium decreased in the leaves. Additionally, during hypoxia, the higher concentration of iron led to an increase in the activity of the antioxidant enzymes in roots and leaves, while decreased the levels of the photosynthetic pigments, leaf gas exchange, and plant growth. In conclusion, high iron concentration in the root medium results in a considerably more severe damage condition to soybean plants under hypoxia compared to plants grown under low iron availability.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia

Delias, Dominique S. ; Da-Silva, Cristiane Jovelina ; Martins, Angelita C. ; de Oliveira, Denise S. C. ; do Amarante, Luciano

Berlin/Heidelberg: Springer Berlin Heidelberg

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