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A User’s Guide

A review on heavy metal pollution, toxicity and remedial measures: Current trends and future perspectives

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.

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Manganese as essential and toxic element for plants: transport, accumulation and resistance mechanisms

/pdf/handbook-of-plant-nutrition-1uozdhlhhi.pdf

Handbook of Plant Nutrition

Selenium distribution in the Chinese environment and its relationship with human health: A review.

Nitrate reductase and glutamine synthetase activity in coffee leaves during fruit

The deficiency of sulfur (S) in agricultural soils has been aggravated in recent decades, mainly by the application of high concentration fertilizers that are S-free and intensive agricultural acti...

André Rodrigues dos Reis

Papers

Nitrate reductase and glutamine synthetase activity in coffee leaves during fruit

Effect of Sulfur Sources on Megathyrsus Maximus ‘Mombaça’ Grass Cultivated in a Typic Ultisol

Physiological and biochemical role of nickel in nodulation and biological nitrogen fixation in Vigna unguiculata L. Walp.

Root-to-Shoot Selenium Transport and Uptake Kinetics in Cowpea Plants by in Vivo Xrf

Selenium enhances ROS scavenging systems and sugar metabolism increasing growth of sugarcane plants.