Function and Compensatory Mechanisms Among the Components of the Chloroplastic Redox Network

Life on earth depends on the presence of photoautotrophic organisms that are able to input carbon into the ecosystems through the process of photosynthesis which, with a few specialized exceptions, takes place within the chloroplast. This organelle contains the most complex redox system in plants be...

Full description

Saved in:
Bibliographic Details
Published in:Critical reviews in plant sciences 2019-01, Vol.38 (1), p.1-28
Main Authors: Souza, Paulo V. L., Lima-Melo, Yugo, Carvalho, Fabricio E., Reichheld, Jean-Philippe, Fernie, Alisdair R., Silveira, Joaquim A. G., Daloso, Danilo M.
Format: Article
Language:English
Subjects:
Chloroplast
Chloroplasts
Complexity
Crosstalk
Ecosystems
Gene expression
Genetic analysis
Glutathione
Life Sciences
Metabolism
Mutants
peroxidases
Photosynthesis
Proteins
redox metabolism
redox network
Reductases
systems biology
thioredoxins
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Life on earth depends on the presence of photoautotrophic organisms that are able to input carbon into the ecosystems through the process of photosynthesis which, with a few specialized exceptions, takes place within the chloroplast. This organelle contains the most complex redox system in plants being composed of numerous players including thiol reductases, peroxidases, and glutathione-related enzymes. It seems likely that these proteins act together to adjust redox metabolism enabling plants to grow efficiently under both normal and stressed conditions. However, our knowledge concerning how these proteins interact and if they can compensate one another is relatively limited. This is in part due to the failure of considering these components from a systemic perspective. Here, we provide a systemic view of the chloroplastic-redox network highlighting how it operates and how its components co-operate to maintain efficient chloroplastic function. We further explore the cross-talk between chloroplastic-redox metabolism and that of other subcellular compartments. Given the complexity of plant redox metabolism and the compensatory role played by different redox systems, we argue that a unique possibility to understand this system is afforded by systems biology approaches and by characterizing mutants for multiple genes. Taking this into account, we highlight how gene co-expression and protein-protein network analyses coupled with different reverse genetic strategies could be used to reveal the function, potential redundancies, and complementarities among the components of the chloroplastic redox network.
ISSN:0735-2689
1549-7836
DOI:10.1080/07352689.2018.1528409