1. National Collection of Yeast Cultures (NCYC), Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
2. Imaging and Microscopy Group (IMG), Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
3. Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3EE, UK
4. National Collection of Agricultural and Industrial Microorganisms, Faculty of Food Science, Szent István University, Budapest, Hungary