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Photosynthetic activity of cotyledons is critical during post-germinative growth and seedling establishment

Opened Access Photosynthetic activity of cotyledons is critical during post-germinative growth and seedling establishment

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Autor: Ojeda, Valle
Armario Nájera, María Victoria
González García, María de la Cruz
Pérez Ruiz, Juan Manuel
Departamento: Universidad de Sevilla. Departamento de Bioquímica y Biología Molecular
Fecha: 2017
Publicado en: Plant Signaling and Behavior, 12 (9), 1-3.
Tipo de documento: Artículo
Resumen: Thioredoxins (Trxs) play a relevant role in thiol-dependent redox regulation, which allows the rapid adaptation of chloroplast metabolism to unpredictable environmental conditions. In chloroplasts, Trxs use reducing equivalents provided by photoreduced ferredoxin (Fdx) via the action of a ferredoxin-thioredoxin reductase (FTR), thus linking redox regulation to light. In addition, these organelles contain an NADPH-thioredoxin reductase, NTRC, with a Trx domain at the C-terminus. NTRC efficiently reduces 2-Cys peroxiredoxins (Prxs), hence having antioxidant function. However, NTRC also participates in the redox regulation of processes, such as starch and chlorophyll biosynthesis, which are known to be regulated by Trxs. Thus, the question arising is whether there is a cross-talk between the 2 redox systems. Arabidopsis mutants simultaneously devoid of NTRC and Trx x or Trxs f show a dramatic growth inhibition phenotype, indicating that NTRC is required for the function of these unrelate...
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Cita: Ojeda, V., Armario Nájera, M.V., González García, M.C. y Pérez Ruiz, J.M. (2017). Photosynthetic activity of cotyledons is critical during post-germinative growth and seedling establishment. Plant Signaling and Behavior, 12 (9), 1-3.
Tamaño: 460.2Kb
Formato: PDF

URI: http://hdl.handle.net/11441/65504

DOI: 10.1080/15592324.2017.1347244

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