Conserved and recurrent Cis elements regulate decarboxylation related genes in C4 photosynthesis

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• Ivan Reyna-Llorens
• Thursday 05 June 2014, 16:30-17:00
• Department of Plant Sciences, Large Lecture Theatre.

If you have a question about this talk, please contact Megan Cooper.

During C4 photosynthesis, CO2 is concentrated around RuBisCO to reduce photorespiration. The reactions in this pathway are distributed between mesophyll (M) and bundle sheath cells (BS). In C. gynandra, the expression of a family of decarboxylases (NAD-ME 1 & 2 is regulated by a 240 nucleotide sequence within the coding region. A deletion series was generated to search for regulatory elements. Two elements within the CDS are required for BS preferential expression. Equivalent fragments in CgNAD-ME2, AtNAD-ME1 & 2 convey the same pattern of expression. By looking for this elements in other gene families we found that malate dehidrogenase (MDH) is regulated by the same elements. We conclude that during evolution genes involved in the oxidoreductase activity sub-network were co-recruited to the BS in C.gynandra.

This talk is part of the Plant Sciences Research Seminars series.

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