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Structural role of silicon-mediated cell wall stability for ammonium toxicity alleviation
(Springer International Publishing, 2023-06-23) Rivero Marcos, Mikel; Silva, Gabriel Barbosa Jr.; Ariz Arnedo, Idoia; Ciencias; Zientziak; Institute for Multidisciplinary Research in Applied Biology - IMAB
The use of ammonium-based fertilizers together with nitrification inhibitors could be a possible alternative to limit N losses, currently derived from nitrate enrichment of soil and water, which are detrimental to the environment. However, prolonged application of ammonium as the main N source can result in development disorders in most plants, commonly referred to as 'ammonium syndrome'. Even if the origin of plants' sensitivity to ammonium is not fully understood, important biological components related to this syndrome have been unraveled over the last years. These components could constitute key targets to develop tools to counteract ammonium toxicity in crops. Thus, this chapter describes structural and metabolic components of root cells related to plant sensitivity to ammonium and how they could be key targets to combat ammonium toxicity by the use of fortification elements, such as silicon. Si is a beneficial element for plants as it increases their resistance to several stresses, including ammonium. New experimental evidences show specific role of Si in alleviating ammonium toxicity of several crops.

Rivero Marcos, Mikel

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