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- W2149590145 abstract "Summary C 4 photosynthesis is an adaptation that evolved to alleviate the detrimental effects of photorespiration as a result of the gradual decline in atmospheric carbon dioxide levels. In most C 4 plants, two cell types, bundle sheath and mesophyll, cooperate in carbon fixation, and, in so doing, are able to alleviate photorespiratory losses. Although much of the biochemistry is well characterized, little is known about the genetic mechanisms underlying the cell‐type specificity driving C 4 . However, several studies have shown that regulation acts at multiple levels, including transcriptional, post‐transcriptional, post‐translational and epigenetic. One example of such a regulatory mechanism is the cell‐specific accumulation of major photorespiratory transcripts/proteins in bundle sheath cells, where ribulose‐1,5‐bisphosphate carboxylase/oxygenase is localized. Although many of the genes are expressed in the bundle sheath, some are expressed in both cell types, implicating post‐transcriptional control mechanisms. Recently, ultra‐high‐throughput sequencing techniques and sophisticated mass spectrometry instrumentation have provided new opportunities to further our understanding of C 4 regulation. Computational pipelines are being developed to accommodate the mass of data associated with these techniques. Finally, we discuss a readily transformable C 4 grass – Setaria viridis – that has great potential to serve as a model for the genetic dissection of C 4 photosynthesis in the grasses. Contents Summary 9 I. Introduction 10 II. Regulation of C 4 differentiation 11 III. The photorespiratory pathway: a case study for transcriptional and post‐transcriptional controls 14 IV. Future perspectives of C 4 research – an introduction to a C 4 model 16 Acknowledgements 17 References 17" @default.
- W2149590145 created "2016-06-24" @default.
- W2149590145 creator A5018439521 @default.
- W2149590145 creator A5053275663 @default.
- W2149590145 creator A5064505993 @default.
- W2149590145 date "2011-02-08" @default.
- W2149590145 modified "2023-09-27" @default.
- W2149590145 title "Regulatory mechanisms underlying C<sub>4</sub>photosynthesis" @default.
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