Cadmium toxicity to barley (Hordeum vulgare) as affected by varying Fe nutritional status

By Shanti S. Sharma, S. Kaul, A. Metwally, K. C. Goyal, I. Finkemeier, Karl-Josef Dietz. 2004

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Iron supply prevents Cd uptake in Arabidopsis by inhibiting IRT1 expression and favoring competition between Fe and Cd uptake (2017, background): “IRT1 expression in roots was induced by Fe-deficiency (Vert et al. 2002; Nakanishi et al. 2006), but was it greatly inhibited under Fesufficient conditions (Cohen et al. 1998; Lombi et al. 2002; Sharma et al. 2004; Shao et al. 2007; Fan et al. 2014).”
Cellular Mechanisms in Higher Plants Governing Tolerance to Cadmium Toxicity (2014, background): “Iron may also contribute to minimizing Cd-mediated oxidative stress in plants because Fe is an integral co-factor of various antioxidative enzymes, such as catalase (CAT) and ascorbate peroxidase (APX) (Sharma et al., 2004).”
Induction of phytochelatins and antioxidant defence system in Brassica juncea and Vigna radiata in response to chromium treatments (2010, background): “This could be explained by an augmented sulphur uptake, which eventually led to GSH biosynhesis, thus maintaining both GSH and PC concentration in this plant (Sharma et al. 2004).”
Acquisition and Homeostasis of Iron in Higher Plants and Their Probable Role in Abiotic Stress Tolerance (2018, background): “Iron is a chief component of the cell redox systems and also acts as a cofactor of various antioxidant enzymes like catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) (Marschner, 1995; Sharma et al., 2004; Kumar et al., 2010).”