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Overexpression of the RieskeFeS protein increasese electron transport rates and biomass yield

Simkin, Andrew J.; McAusland, Lorna; Lawson, Tracy; Raines, Christine A.

Authors

Andrew J. Simkin asimkin@essex.ac.uk

Lorna McAusland lorna.mcausland@nottingham.ac.uk

Tracy Lawson tlawson@essex.ac.uk

Christine A. Raines rainc@essex.ac.uk



Abstract

In this study, we generated transgenic Arabidopsis (Arabidopsis thaliana) plants overexpressing the Rieske FeS protein (PetC), a component of the cytochrome b6f (cyt b6f) complex. Increasing the levels of this protein resulted in concomitant increases in the levels of cyt f (PetA) and cyt b6 (PetB), core proteins of the cyt b6f complex. Interestingly, an increase in the levels of proteins in both the photosystem I (PSI) and PSII complexes also was seen in the Rieske FeS overexpression plants. Although the mechanisms leading to these changes remain to be identified, the transgenic plants presented here provide novel tools to explore this. Importantly, overexpression of the Rieske FeS protein resulted in substantial and significant impacts on the quantum efficiency of PSI and PSII,electron transport, biomass, and seed yield in Arabidopsis plants. These results demonstrate the potential for manipulating electron transport processes to increase crop productivity.

Journal Article Type Article
Journal Plant Physiology
Print ISSN 0032-0889
Electronic ISSN 1532-2548
Publisher American Society of Plant Biologists
Peer Reviewed Peer Reviewed
Volume 175
APA6 Citation Simkin, A. J., McAusland, L., Lawson, T., & Raines, C. A. (in press). Overexpression of the RieskeFeS protein increasese electron transport rates and biomass yield. Plant Physiology, 175, https://doi.org/10.1104/pp.17.00622
DOI https://doi.org/10.1104/pp.17.00622
Keywords RieskeFeS, Arabidopsis, gas exchange, electron transport, biomass, yield
Publisher URL http://www.plantphysiol.org/content/175/1/134
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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2017 Simkin et al Plant Phys Rieske.pdf (1.7 Mb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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