Dr Agnieszka Witek

Research Assistant
Jonathan Jones Group

With a background in plant biochemistry and plant-microbe interactions, as well as a thorough knowledge of molecular biology techniques, I am currently involved in cloning and characterization the functional NB-LRR genes from various wild Solanum species.

During my PhD I conducted a biochemical and functional analysis of a potato endo-1,3-β-glucanase GLUB20-2, including kinetics parameters and substrate specificity. I have also studied, with the aid of transgenic plants, its potential involvement in pathogen resistance and cell wall remodelling. After receiving my PhD, I was engaged in studying certain aspects of vesicular transport in plants, and also worked as a lab support specialist.

My current responsibilities in the ‘potato group’ embrace mainly all aspects of the ‘wet lab’ work, including analysing plant populations for gene cloning and preparing material for high-throughput techniques.


Grech-Baran M, Witek K, Szajko K, Witek AI, Morgiewicz K, Wasilewicz-Flis I, Jakuczun H, Marczewski W, Jones JD, Hennig J (2019)

Extreme resistance to Potato Virus Y in potato carrying the Rysto gene is mediated by a TIR-NLR immune receptor. Plant Biotechnol J. 2019 Aug 9. doi: 10.1111/pbi.13230.

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Steuernagel B, Witek K, Krattinger SG, Ramirez-Gonzalez RH, Schoonbeek HJ, Guotai G, Baggs E, Witek A, Yadav I, Krasileva KV, Jones JDG, Uauy C, Keller B, Ridout CJ, The International Wheat Genome Sequencing Consortium, Wulff B (2018)

Physical and transcriptional organisation of the bread wheat intracellular immune receptor repertoire. bioRxiv preprint Jun 05, 2018 doi: doi:

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Witek K, Jupe F, Witek AI, Baker D, Clark MD, Jones JDG (2016)

Accelerated cloning of a potato late blight–resistance gene using RenSeq and SMRT sequencing. Nature Biotechnology (2016) doi:10.1038/nbt.3540

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Job History

2015 – present Research Assistant, The Sainsbury Laboratory, Norwich, UK

2012 – 2014 Scientific Support, The Sainsbury Laboratory, Norwich, UK

2010 – 2011 Lab support, University of East Anglia, Norwich, UK

2009 – 2010 Research Assistant, Institute of Biochemistry and Biophysics PAS, Warsaw, Poland

2001 – 2008 PhD student, Institute of Biochemistry and Biophysics PAS, Warsaw, Poland