Response of soybean to soil waterlogging associated with iron excess in the reproductive stage

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

“…Moreover, Fe toxicity resulted from hypoxia can be further accentuated in soils containing high concentrations of Fe. In plants, Fe toxicity leads to nutritional disorders (Pan et al 2016;Maranguit et al 2017;Matin and Jalali 2017), impairs leaf gas exchange (Pereira et al 2013;Müller et al 2017;dos Santos et al 2019dos Santos et al , 2020, and increases the generation of hydroxyl radicals via the Fenton reaction, which damages various biomolecules such as lipids, proteins, pigments, and DNA (de Oliveira et al 2013;Stein et al 2014;Xu et al 2015;Das et al 2020;Lapaz et al 2020).…”

“…Although many studies have assessed the impact of hypoxia and Fe toxicity in rice plants, only one study to date has evaluated soybean responses to these stressors in combination (Lapaz et al 2020). This study elegantly demonstrates how waterlogging-induced hypoxia and Fe toxicity impair leaf metabolism and soybean growth and reproduction (Lapaz et al 2020).…”

“…Although many studies have assessed the impact of hypoxia and Fe toxicity in rice plants, only one study to date has evaluated soybean responses to these stressors in combination (Lapaz et al 2020). This study elegantly demonstrates how waterlogging-induced hypoxia and Fe toxicity impair leaf metabolism and soybean growth and reproduction (Lapaz et al 2020). However, the physiological impairments occurring at the root level (which is the main organ affected during hypoxia), the importance and function of the antioxidant system, and the plant nutritional status were not assessed, comprising an important gap in our current understanding of soybean responses to hypoxia and Fe toxicity.…”

High‐throughput phenotyping of plant growth rate to screen for waterlogging tolerance in lentil

“…Hypoxia inhibits root and shoot growth with symptoms including chlorosis, necrosis and abscission of leaves, and the death of nodules and roots (Cowie et al, 1996;Jackson & Colmer, 2005). Waterlogging may also increase damage from toxicity or deficiency of Mn, Fe, Na, Al and B; hence, plant tolerance may differ with soil type (Lapaz et al, 2020;Setter et al, 2009;Yamauchi et al, 2013).…”

“…Cool season grain legumes are less tolerant to waterlogging than cereals and canola (Lapaz et al, 2020;Ploschuk et al, 2020;Solaiman et al, 2007). Of the cool season grain legumes, tolerance ranks faba bean ≈ lupin > chickpea > lentil > field pea (Jayasundara et al, 1997;Solaiman et al, 2007).…”