Franz Hoffmann, Ph.D.
Senior Lecturer

104, 105, 1148 Green House
University of California Irvine
Irvine, CA 92697

Tel: (949) 824-6436, 3400
Fax: (949) 824-4709
Email: fjhoffma@uci.edu

Plant cell development – Isolated plant protoplasts are our main tool to study the initiation and mechanism of cell division in cultured cells and the regeneration of plants from single cells. The respective investigations include aspects of cell wall synthesis, microtubule transition and cytoplasmic streaming as prerequisites for cell division as well as neoplastic systems such as tumors and root nodules. Techniques used to study cell regeneration include immunofluorescence of the cytoskeleton, laser microsurgery of cellular structures such as cytoplasmic strands and organelles. Genetic manipulation techniques focus on protoplast fusion, utilizing chemo-, electro-, and laser-induced fusion, and laser-enhanced DNA uptake into cells. The illustration shows an immunofluorescence image of cortical microtubules of electro-fused protoplasts.

Recent Publications

  • Hoffmann F, Daniel F, Fortier T, Hoffmann-Tsay SS (2011) Efficient avian pollination of Strelitzia reginae outside of South Africa. S Afr J Bot in press.
  • Himuro Y, Tanaka H, Hashiguchi M, Ichikawa T, Nakazawa M, Sekid M, Fujita M, Shinozaki K, Matsui M, Akashi R, Hoffmann F (2011) FOX-superroots of Lotus corniculatus, overexpressing Arabidopsis full-length cDNA, show stable variations in morphological traits. J Plant Physiol 168, 1-12
  • Hoffmann F, Fortier T, Hoffmann-Tsay SS (2010) Micropropagation of Date Palm(Phoenix dactylifera). Publ US Department of Agriculture
  • Hoffmann F, Wilhelm C (2010) Journal of Plant Physiology: Volume 167, issues 1-18
  • Hoffmann F, Wilhelm C (2009) Journal of Plant Physiology: Volume 166: issues 1-18
  • Tanaka H, Toyama J, Hashiguchi M, Kutsuna Y, Tsuruta S-I, Akashi R, Hoffmann F (2008) Transgenic superrrots of Lotus corniculatus can be regenerated from superrroot-derived leaves following Agrobacterium-mediated transformation. J Plant Physiol 165, 1313-1316
  • Hoffmann F, Wilhelm C (2008) Journal of Plant Physiology: Volume 164: issues 1-12
  • Hoffmann F (2007) Editorial: Model species versus diversity. J Plant Physiol 164 (12): in press
  • Hoffmann F, Wilhelm C (2007) Journal of Plant Physiology: Volume 164: issues 1-12

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