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An experimental method to facilitate the identification of hybrid sporophytes in the moss Physcomitrella patens using fluorescent tagged lines
Article first published online: 2 MAR 2011
DOI: 10.1111/j.1469-8137.2011.03668.x
© 2011 The Authors. New Phytologist © 2011 New Phytologist Trust
Additional Information
How to Cite
Perroud, P.-F., Cove, D. J., Quatrano, R. S. and McDaniel, S. F. (2011), An experimental method to facilitate the identification of hybrid sporophytes in the moss Physcomitrella patens using fluorescent tagged lines. New Phytologist, 191: 301–306. doi: 10.1111/j.1469-8137.2011.03668.x
Publication History
- Issue published online: 2 JUN 2011
- Article first published online: 2 MAR 2011
- Received: 24 November 2010, Accepted: 11 January 2011
Keywords:
- forward genetics;
- hybridization;
- mutants;
- reverse genetics;
- self-fertilization
Summary
- •The sequencing of the Physcomitrella patens genome, combined with the high frequency of gene targeting in this species, makes it ideal for reverse genetic studies. For forward genetic studies, experimental crosses and genetic analysis of progeny are essential.
- •Since P. patens is monoicous, producing both male and female gametes on the same gametophore, and undergoing self-fertilization at a high frequency, the identification of crossed sporophytes is difficult. Usually spores from many sporophytes from a mixed culture must be tested for the production of recombinant progeny.
- •Here, we describe the use of transgenic lines that express a fluorescent transgene constitutively, to provide a direct visual screen for hybrid sporophytes.
- •We show that segregations in crosses obtained with this technique are as expected, and demonstrate its utility for the study of the rate of outcrossing between three isolates of P. patens.