TY  - JOUR
AB  - Redox regulation, antioxidant defence, and reactive oxygen species (ROS) signalling are critical in performing and tuning metabolic activities. However, our concepts have mostly been developed for C3 plants since Arabidopsis thaliana has been the major model for research. Efforts to convert C3 plants to C4 to increase yield (such as IRRI’s C4 Rice Project) entail a better understanding of these processes in C4 plants. Various photosynthetic enzymes that take part in light reactions and carbon reactions are regulated via redox components, such as thioredoxins as redox transmitters and peroxiredoxins. Hence, understanding redox regulation in the mesophyll and bundle sheath chloroplasts of C4 plants is of paramount importance: it appears impossible to utilize efficient C4 photosynthesis without understanding its exact redox needs and the regulation mechanisms used during light reactions. In this review, we discuss current knowledge on redox regulation in C3 and C4 plants, with special emphasis on the mesophyll and bundle sheath differences that are found in C4. In these two cell types in C4 plants, linear and cyclic electron transport in the chloroplasts operate differentially when compared to C3 chloroplasts, changing the redox needs of the cell. Therefore, our focus is on photosynthetic light reactions, ROS production dynamics, antioxidant defence, and thiol-based redox regulation, with the aim of providing an overview of our current knowledge.
DA  - 2018
DO  - 10.1093/jxb/ery064
KW  - Antioxidant enzyme
KW  - bundle sheath cell
KW  - C4 photosynthesis
KW  - mesophyll cell
KW  - NAD-ME
KW  - NADP-ME
KW  - reactive oxygen species (ROS)
KW  - redox regulation
KW  - thiol
KW  - thioredoxin.
LA  - eng
IS  - 14
M2  - 3321
PY  - 2018
SN  - 0022-0957
SP  - 3321-3331
T2  - Journal of Experimental Botany
TI  - Reactive oxygen species and redox regulation in mesophyll and bundle sheath cells of C4 plants
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29197627
Y2  - 2024-11-21T22:04:49
ER  -