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Mutations in the Physcomitrium patens gene encoding Aminodeoxychorismate Synthase confer auxotrophic phenotypes
Michael J Prigge1, Yingluo Wang1, Mark Estelle1
1Section of Cell and Developmental Biology, University of California San Diego, La Jolla, CA 92093-0116, USA.
Micropublication Biology
|February 4, 2021
Summary
Researchers developed a new genetic marker for Physcomitrium patens, combining recessive auxotrophy with dominant positive selection. This tool aids in genetic mapping and creating somatic hybrids for developmental mutant studies.
Area of Science:
- Plant Science
- Genetics
- Molecular Biology
Background:
- Genetic mapping is crucial for understanding developmental mutants in Physcomitrium patens.
- Existing methods may have limitations in facilitating comprehensive genetic analysis.
Purpose of the Study:
- To develop a novel genetic marker for efficient genetic mapping of Physcomitrium patens developmental mutants.
- To create a versatile strain for producing bi-parental somatic hybrids.
Main Methods:
- Identified the gene responsible for the pabB4 auxotrophic mutation.
- Replaced the identified gene with an antibiotic resistance cassette.
- Developed a genetic marker combining recessive auxotrophy and dominant positive selection.
Main Results:
- Successfully produced a Physcomitrium patens strain with a combined recessive auxotrophy and dominant positive selection marker.
- The new marker facilitates genetic mapping of developmental mutants.
- The developed strain is suitable for generating bi-parental somatic hybrids with diverse strains.
Conclusions:
- The novel genetic marker significantly advances genetic mapping capabilities in Physcomitrium patens.
- This tool provides a versatile platform for studying developmental mutants and generating somatic hybrids.
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