Contact: Professor David Twell
University of Leicester
Caption: Pictured is a confocal image of an Arabidopsis pollen grain showing sperm cell-specific expression of the GFP-tagged plasma membrane protein Generative Cell Specific1 that is required for double fertilisation in flowering plants. The GCS1-GFP fusion protein appears in the periphery of the sperm cell pair (spectacles) present in each pollen grain. The authors show that germ cell division and specification, including the expression of GCS1 are regulated by the germline-specific transcription factor DUO POLLEN 1. Thus DUO1 has an integrative role linking germ cell division and sperm cell differentiation in flowering plants.
Credit: Image generated by Lynette Brownfield (University of Leicester)
Usage Restrictions: Must be used with caption and credit.
Related news release: Plant biologists discover gene that switches on 'essence of male'