ARABIDOPSIS RESEARCH ROUND-UPARABIDOPSIS RESEARCH ROUND-UP

9th Oct 2013

This week’s Arabidopsis Research Round-up features a current GARNet committee member from the Sainsbury Laboratory in Norwich, and our former GARNet PI, Andrew Millar from the Unviersity of Edinburgh. Both contributions to the literature this week are open access!

 

  • Keily J, MacGregor DR, Smith RW, Millar AJ, Halliday KJ and Penfield S. Model selection reveals control of cold signaling by evening-phased components of the plant circadian clock. The Plant Journal, 5 October 2013. DOI: 10.1111/tpj.12303. [Open Access]

The University of Exeter and the University of Edinburgh worked together on this Plant Journal paper, which included former GARNet PI, Edinburgh’s Andrew Millar. Here, the collaborators use a model ensemble to advance understanding of the ways in which genes involved in the Arabidopsis circadian clock control cold signalling. Connections were found between evening-phased circadian clock components and C-REPEAT BINDING FACTOR 3 (CBF3) but not CBF1 or CB2. Furthermore, the model predicted the correct gating of CBF transcription by cold, but only when the cold signal originated from the clock mechanism. This suggests that the clock has an important role in temperature signal transduction.

 

  • Zhang W, Fraiture M, Kolb D, Löffelhardt B, Desaki Y, Boutrot FGF, Tör M, Zipfel C, Gust AA and Brunner F. Arabidopsis RECEPTOR-LIKE PROTEIN30 and Receptor-like kinase SUPPRESSOR OF BIR1-1/EVERSHED mediate innate immunity to necrotrophic fungi. The Plant Cell, October 2013. DOI: 10.​1105/​tpc.​113.​117010. [Open Access]

Researchers from the University of Tübingen enlisted the help of UK plant scientists on this Plant Cell paper, including GARNet committee member Cyril Zipfel and his colleague Freddy Boutrot from The Sainsbury Laboratory in Norwich, and Mahmut Tör from the National Pollen and Aerobiology Research Unit at the University of Worcester. Investigating the role of microbe-associated molecular patterns (MAMPs) in plant resistance, the team identified a novel proteinaceous elicitor called SCLEROTINIA CULTURE FILTRATE ELICITOR1 (SCFE1) from the fungal pathogen Sclerotinia sclerotiorum, which induces typical MAMP-triggered immune responses in Arabidopsis thaliana. Analysis revealed five natural A. thaliana variants that are insensitive to SCFE1, and this sensitivity was in turn mapped to RECEPTOR-LIKE PROTEIN30 (RLP30).