Generating Targeted Gene Knockout Lines in Physcomitrella patens to Study Evolution of Stress-Responsive Mechanisms

  • Monika Maronova
  • Maria KalynaEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 1398)


The moss Physcomitrella patens possesses highly efficient homologous recombination allowing targeted gene manipulations and displays many features of the early land plants including high tolerance to abiotic stresses. It is therefore an invaluable model organism for studies of gene functions and comparative studies of evolution of stress responses in plants. Here, we describe a method for generating targeted gene knockout lines in P. patens using a polyethylene glycol-mediated transformation of protoplasts including basic in vitro growth, propagation, and maintenance techniques.

Key words

Homologous recombination Gene targeting Knockout Physcomitrella Plant Stress Evolution Protoplast 



We thank Dr. Cuming and Dr. Kamisugi for expert advice and training in Physcomitrella transformation, as well as for providing us with the “Gransden” strain of P. patens and advice on its handling and for the vectors used for preparing constructs. This work was supported by the Austrian Science Fund (FWF [P26333]) to M.K.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Max F. Perutz LaboratoriesMedical University of ViennaViennaAustria
  2. 2.Institute of Applied Genetics and Cell Biology (IAGZ)BOKU — University of Natural Resources and Life SciencesViennaAustria

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