MANGANESE AS ESSENTIAL AND TOXIC ELEMENT FOR PLANTS: TRANSPORT, ACCUMULATION AND RESISTANCE MECHANISMS

By Rayen Millaleo, M. Díaz, Alexander G. Ivanov, María de la Luz Mora, M. Alberdi. 2010

858 citations recorded by the source corpus.

Manganese is an essential element for plants, intervening in several metabolic processes, mainly in photosynthesis and as an enzyme antioxidant-cofactor. Nevertheless, an excess of this micronutrient is toxic for plants. Mn phytotoxicity is manifested in a reduction of biomass and photosynthesis, and biochemical disorders such as oxidative stress. Some studies on Mn toxicity and Mn translocation from soil to plant cells in Mn2+ form have demonstrated their importance under low pH and redox potential conditions in the soil. When Mn is inside the cells, mechanisms that can tolerate this toxicity are also observed, being important the compartmentalization of this metal in different organdies of shoot and leaf plant cells. A key role of antioxidative systems in plants in relation to high Mn amounts has also been reported as a defense mechanism. The purpose of this review is to show the role of Mn as an essential micronutrient and as a toxic element to higher plants as well as to their transport and tolerance mechanisms. The forms and dynamics of this element in soils and the importance of the acidity for this dynamic and availability for plants are also given.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/f4551076c5ea42ece6c227caa47f14f7dad52db0

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Citations in the corpus

Comprehending crystalline β-carotene accumulation by comparing engineered cell models and the natural carotenoid-rich system of citrus (2011, neutral): “Mn is considered the second most phytotoxic element, after aluminium (Al), affecting negatively the physiological and biochemical properties of plant species (Foy et al., 1978, Foy, 1984; Millaleo et al., 2010).”
Effects of Manganese Nanoparticle Exposure on Nutrient Acquisition in Wheat (Triticum aestivum L.) (2018, background): “The manifestation of Mn toxicity in different crops may occur when shoot Mn content ranges from 176 to 3500 mg/kg [2].”
Heavy Metal Stress and Some Mechanisms of Plant Defense Response (2015, background): “metabolism, synthesis of fatty acid, acyl lipids, and carotenoid as well as hormonal activation [33, 63, 64].”