Daniel Ballesteros is a researcher of the Department of Comparative Plant and Fungal Biology at Royal Botanic Gardens, Kew. He has a PhD in plant biology from the University of Valencia (Spain), 10 years of postdoctoral experience in plant physiology and conservation research facilities from the USA, South Africa, Italy and the UK, and teaching experience at BSc, MSc and PhD levels. His main research line aims to reveal the fundamental basis of desiccation and low temperature stress tolerance in plants, particularly in relation to successful cryopreservation and long-term conservation of seeds and other plant propagules. In addition he is interested in the variation in longevity in plant propagules, from fern spores as a unicellular model to more complex systems. His research is multidisciplinary, and often these studies involve making structural and biophysical determinations. He has published approximately 16 scientific papers (in international peer-reviewed journals), 8 book chapters, has delivered about 12 invited talks, and has been editor for an international publication.