Redox signaling and environmental stress in plants

We have focused on the study of redox signaling systems and the response of plants to oxidative stress using two model systems: Arabidopsis and cereals. In Arabidopsis our main objective was to establish the function of NTRC, a peculiar NTR with a joint Trx domain at the C-terminus with chloroplast localization, for which we have proposed a reaction mechanism. We have also established the central function of NTRC to maintain the redox homeostasis of the chloroplast, involved in the regulation of processes such as starch synthesis. Finally, we have shown for the first time the existence of overoxidation sensitive 2-Cys Prx in prokaryotic organisms, such as the cyanobacterium Anabaena. In a second objective that we have addressed, mechanisms of detoxification in cereal seed cells, we have shown that the antioxidant system formed by NTR, Trx and 1-Cys Prx is accumulated in the nucleus of seed cells, thus suggesting its function in redox control of gene expression.

- Redox signaling in plants

- Mechanisms of defence against oxidative stress

- Redox regulation of starch synthesis

- Programmed cell death in plants

Ministerio de Ciencia e Innovación, Junta de Andalucía
Selected Publications
Type: Publications in journals
NADPH thioredoxin reductase C is involved in redox regulation of the Mg-chelatase I subunit in Arabidopsis thaliana chloroplasts
Authors: Pérez-Ruiz, J.M., Guinea, M., Puerto-Galán, L., Cejudo, F.J.
Publication Year: 2014
Pages: 1252-1255 doi: 10.1093/mp/ssu032
Journal: Molecular Plant
Volume: 7
Type: Publications in journals
NADPH Thioredoxin Reductase C Is Localized in Plastids of Photosynthetic and Nonphotosynthetic Tissues and Is Involved in Lateral Root Formation in Arabidopsis
Authors: Kirchsteiger, K., Ferrández, J., Pascual, M.B., González, M.C. and Cejudo, F.J.
Publication Year: 2012
Pages: 1534-1548
Journal: Plant Cell
Volume: 24