Thompson, Elinor ORCID: 0000-0002-6434-9290, Llewellyn Smith, Stefan and Glover, Beverley (2012) An Arabidopsis rhomboid protease has roles in the chloroplast and in flower development. In: Gordon Research Conference. Plant Molecular Biology: Genomic Approaches to Plant Signaling Systems, 15-20 July 2012, Holderness, NH, USA.

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Abstract

Increasing numbers of cellular pathways are now recognised to be regulated via proteolytic processing events. The rhomboid family of serine proteases plays a pivotal role in a diverse range of pathways, activating and releasing proteins via regulated intramembrane proteolysis. The prototype rhomboid protease, rhomboid-1 in Drosophila, is the key activator of epidermal growth factor (EGF) receptor pathway signalling in the fly and thus affects multiple aspects of development. We are exploring the role of the rhomboid family in plants and here report another developmental phenotype, this time in a mutant of an Arabidopsis chloroplast-localised rhomboid. We confirm by GFP-protein fusion that this protease in located in the envelope of chloroplasts and of chlorophyll-free plastids elsewhere in the plant. Mutant plants lacking this organellar rhomboid demonstrate reduced fertility, as documented previously with KOM — the one other Arabidopsis rhomboid mutant that has been reported in the literature — along with aberrant floral morphology.

Item Type:	Conference or Conference Paper (Plenary)
Additional Information:	[1] Acknowledgements: This work was supported by the HFSP
Uncontrolled Keywords:	rhomboid, chloroplast, Arabidopsis
Subjects:	Q Science > QH Natural history > QH301 Biology S Agriculture > SB Plant culture
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science
Related URLs:	Organisation
Last Modified:	14 Oct 2016 09:30
URI:	http://gala.gre.ac.uk/id/eprint/12759

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