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An experimental method to facilitate the identification of hybrid sporophytes in the moss Physcomitrella patens using fluorescent tagged lines
Author(s) -
Perroud PierreFrançois,
Cove David J.,
Quatrano Ralph S.,
McDaniel Stuart F.
Publication year - 2011
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.2011.03668.x
Subject(s) - physcomitrella patens , sporophyte , biology , gametophyte , outcrossing , reverse genetics , spore , botany , gene , genetics , genome , pollen , mutant
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 .