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SUMMARY:Regulation of gene expression in C4 metabolism - Ivan Reyna-Lloren
 s
DTSTART:20120525T123000Z
DTEND:20120525T130000Z
UID:TALK36381@talks.cam.ac.uk
CONTACT:Suzy Stoodley
DESCRIPTION:During C4 photosynthesis\, CO2 is concentrated around the enzy
 me RuBisCO in order to reduce photorespiration. The reactions in this path
 way are typically distributed between mesophyll (M) and bundle sheath cell
 s (BS). Genes can be recruited into M and BS cells in C4 leaves without al
 terations to cis-elements. For example\, in the C4 plant\, Cleome gynandra
 \, the expression of a small family of decarboxylases (NAD-ME 1 & 2) is re
 gulated by a 240 nucleotide sequence within the coding region of their tra
 nscripts. Results obtained to date identify two modules within the 240 nt 
 sequence that are necessary for BS-cell specific expression of CgNAD-ME1. 
 These modules are present in C3 Arabidopsis NAD-MEs and in the coding regi
 on of another family of decarboxylases\, the NADP-ME family from Zea mays 
 (C4) and Oryza sativa (C3). Initial analysis indicates that within the pro
 moter region of CgNAD-ME1\, at least one enhancer element could be increas
 ing the levels of expression of CgNAD-ME1 compared with those generated by
  the AtNAD-ME1 promoter. 
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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