In Vivo Metabolic Regulation of Alternative Oxidase under Nutrient Deficiency—Interaction with Arbuscular Mycorrhizal Fungi and Rhizobium Bacteria
Metadatos
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MDPI
Materia
Alternative oxidase Arbuscular mycorrhizal fungi Nitrogen and phosphorus nutrition Rhizobium Plant primary metabolism
Date
2020-06-12Referencia bibliográfica
Ortíz, J., Sanhueza, C., Romero-Munar, A., Castro, J. H. C. C., Bascuñán-Godoy, L., Coba de la Peña, T., ... & Del-Saz, N. F. (2020). In Vivo Metabolic Regulation of Alternative Oxidase under Nutrient Deficiency—Interaction with Arbuscular Mycorrhizal Fungi and Rhizobium Bacteria. International Journal of Molecular Sciences, 21(12), 4201. [doi:10.3390/ijms21124201]
Patrocinador
FONDECYT from National Agency for Research and Development (ANID) 1191118; Chilean Scholarship Program/Becas de doctorado nacional/2017 21180329; European Union (EU) 753301Résumé
The interaction of the alternative oxidase (AOX) pathway with nutrient metabolism is
important for understanding how respiration modulates ATP synthesis and carbon economy in
plants under nutrient deficiency. Although AOX activity reduces the energy yield of respiration, this
enzymatic activity is upregulated under stress conditions to maintain the functioning of primary
metabolism. The in vivo metabolic regulation of AOX activity by phosphorus (P) and nitrogen (N)
and during plant symbioses with Arbuscular mycorrhizal fungi (AMF) and Rhizobium bacteria is
still not fully understood. We highlight several findings and open questions concerning the in vivo
regulation of AOX activity and its impact on plant metabolism during P deficiency and symbiosis
with AMF. We also highlight the need for the identification of which metabolic regulatory factors of
AOX activity are related to N availability and nitrogen-fixing legume-rhizobia symbiosis in order to
improve our understanding of N assimilation and biological nitrogen fixation.