Iron toxicity: effects on the plants and detoxification strategies
Allan de Marcos Lapaz, Camila Hatsu Pereira Yoshida, Pedro Henrique Gorni, Larisse de Freitas-Silva, Talita de Oliveira Araújo, Cléberson Ribeiro
Abstract
Iron (Fe) is an essential micronutrient for plants, as a cofactor in multi-heme cytochromes and within iron-sulfur clusters. However, Fe can be toxic at high concentrations. Free Fe in cells can disrupt the cell redox balance toward a pro-oxidant state, generating oxidative stress. The focuses of this review were to elucidate the Fe detoxification strategies used by plants, as well as describe the Fe excess effects on the plant body and its impact on the physiological, morphological and metabolic traits. Therefore, we highlight the importance of evaluating Fe toxicity and provide a paper compilation on Fe detoxification strategies and morpho-physiological responses to excess Fe, directing further research in this segment.