Physcomitrella patens Reute mCherry as a tool for efficient crossing within and between ecotypes.

Area of Science:

• Plant Science
• Genetics
• Molecular Biology

Background:

• Physcomitrella patens is a monoecious moss.
• Established laboratory crossing techniques exist.
• The Gransden and Villersexel ecotypes have been used for genetic mapping.

Purpose of the Study:

• To assess the crossing potential of the newly introduced Reute ecotype.
• To develop fluorescent Reute strains for offspring detection.
• To demonstrate the utility of Reute for genetic crossing.

Main Methods:

• Normalized crossing approach between Reute and Gransden ecotypes.
• Generation of Reute fluorescent strains (mCherry).
• Crossing Reute strains with a Gransden mutant (DR5:DsRed2).

Main Results:

• Reute can be successfully crossed with the Gransden ecotype.
• Reute fluorescent strains efficiently fertilize both Reute and Gransden wild types.
• Progeny exhibit Mendelian 1:1 segregation of fluorescent markers.

Conclusions:

• The Reute ecotype is highly suitable for genetic crossing.
• Reute fluorescent strains are valuable tools for genetic studies in Physcomitrella patens.
• This work expands the genetic toolkit for Physcomitrella patens research.