Rivero Marcos, Mikel

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Rivero Marcos

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Mikel

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Ciencias

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IMAB. Research Institute for Multidisciplinary Applied Biology

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Now showing 1 - 2 of 2
  • PublicationEmbargo
    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.
  • PublicationOpen Access
    Can N nutrition lead to "plant diabetes"? The perspective from ammonium nutrition and methylglyoxal accumulation
    (Frontiers Media, 2022) Rivero Marcos, Mikel; Ariz Arnedo, Idoia; Institute for Multidisciplinary Research in Applied Biology - IMAB; Gobierno de Navarra / Nafarroako Gobernua; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
    Here we introduce a debate about whether plants can be suffering a "diabetes-like syndrome" depending on the N nutrition management. The idea of a plant diabetes is not new and was initially proposed by Saito et al. (2011) when they identified MG as a potent photosystem I-mediated superoxides generator in spinach chloroplasts. Later and along the same lines, Takagi et al. (2014) and Shimakawa et al. (2014) discussed the possible plant diabetes by associating it with the accumulation of MG as a common metabolite of the primary pathways of sugar anabolism and catabolism. Nevertheless, given the increasing relevance of NH+ 4 nutrition for crop production in a context of elevated atmospheric CO2, in addition to being a less polluting alternative to the excessive use of NO- 3 (Subbarao and Searchinger, 2021), we examine here from a new point of view the current knowledge about the glycolytic by-product MG and its link to a possible "NH+ 4 diet"-mediated plant diabetes.