A bipartite transcription factor module controls bundle sheath preferential expression in Arabidopsis

Add to your list(s) Download to your calendar using vCal

• Patrick Dickinson, Hibberd group
• Thursday 15 October 2020, 13:00-14:00
• Online.

If you have a question about this talk, please contact se389.

C4 photosynthesis evolved repeatedly from the ancestral C3 state, improving photosynthetic efficiency by ~50%. In most C4 lineages photosynthesis is compartmented between mesophyll and bundle sheath cells but how gene expression is restricted to these cell types is poorly understood. Using the C3 model Arabidopsis thaliana we have identified cis-elements and transcription factors driving expression in bundle sheath strands. Upstream of the bundle sheath preferentially expressed MYB76 gene we identified a region necessary and sufficient for expression containing two cis-elements associated with the MYC and MYB families of transcription factors. MYB76 expression is reduced in mutant alleles for each. Moreover, down-regulated genes shared by both mutants are preferentially expressed in the bundle sheath. These findings are broadly relevant for understanding the spatial patterning of gene expression, provide specific insights into mechanisms associated with evolution of C4 photosynthesis and identify a short tuneable sequence for manipulating gene expression in the bundle sheath.

Contact se389@cam.ac.uk for the Zoom link if you are not on our mailing list.

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

This talk is included in these lists:

• All Talks (aka the CURE list)
• Biology
• Biology
• CambPlants Hub
• Cambridge Global Food Security
• Cambridge Global Food Security
• Interesting talks- 1st try
• Life Sciences
• Life Sciences
• ME Seminar
• Online
• Plant Sciences Departmental Seminars
• Reception - Plant Sciences
• ji247's list
• my_list
• other talks

Note that ex-directory lists are not shown.