Dr Heather Walker

Telephone: +44 (0)114 222 0049
Email: h.j.walker@sheffield.ac.uk
Webpage: www.researchgate.net/profile/Sophie_Evison/publications
Collaborators: Professor Mike Burrell, Professor Duncan Cameron, Professor Jurriaan Ton, Professor Hilary Powers

Career

2015–present: Mass Spectrometry Facility Manager, Animal and Plant Sciences, University of Sheffield
2014: PhD thesis entitled “Direct Approaches to Metabolite Profiling by Mass Spectrometry”, University of Sheffield
2003-2014: Senior Research Technician, Animal and Plant Sciences, University of Sheffield
1999-2003: Mass Spectrometry Demo Chemist, Waters UK, Manchester
1994–1999: Chemical Analyst, Sheffield Hallam University
1994: MSc Chemistry, UMIST
1991: BSc (Hons) Chemistry, UMIST

Research Interests

I am an analytical biochemist with over 20 years’ experience in Mass Spectrometry. For over 10 years I have specialised in using Mass Spectrometry for metabolomics studies on biological material, in particular plant material collaborating on many different research projects including fruit yield and quality in tomato, metabolic profiling and imaging metabolism in wheat and metabolic imaging of the primed immune response to plants.

Other work has included metabolite studies in cervical and breast cancer cell lines in collaboration with the University of Sheffield Medical School.

Selected publications

Stefanie Tille, Gareth K Phoenix, Heather J Walker, Jonathan R Leake, Duncan D Cameron, (submitted to The Plant Journal 2015), Metabolic responses in roots of Triticum aestivum exposed to organic and inorganic phosphorus sources.

Kayleigh Kerins, Michael Burrell, Andrew Fleming, Heather Walker, (2014), MALDI-MSi to understand amino acid metabolism in developing wheat grain. Waters MALDI Users Meeting 2014.

Heather Walker, (2011) Metabolite Profiling of Plant Tissues by Electrospray Mass Spectrometry, Handbook of Microbial Ecology I – Metagenomics and Complementary Approaches, Edited Frans J. De Bruijn, Wiley-Blackwell, Chapter 73

C. J. Duckett, J. C. Lindon, H. Walker, F. Abou-Shakra, D. Wilson, & J. K. Nicholson (2006) Metabolism of 3-chloro-4-fluoroaniline in rat using [14C]-radiolabelling, 19F-NMR spectroscopy, HPLC-MS/MS, HPLC-ICPMS and HPLC-NMR, Xenobiotica, 36(1): 59–77

S. A. Overy, H. J. Walker, S. Malone, T. P. Howard, C. J. Baxter, L. J. Sweetlove, S. A. Hill and W. P. Quick (2005), Application of metabolite profiling to the identification of traits in a population of tomato introgression lines, Journal of Experimental Botany, 56(410): 287-296