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High-Throughput Robotically Assisted Isolation of Temperature-sensitive Lethal Mutants in Chlamydomonas reinhardtii
Published on: December 5, 2016
Building a multipurpose insertional mutant library for forward and reverse genetics in Chlamydomonas
Xi Cheng1,2, Gai Liu1, Wenting Ke1
1Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 China.
Plant Methods
|May 19, 2017
Summary
This study developed a large library of ~150,000 insertional mutants in Chlamydomonas reinhardtii, enabling efficient genetic analysis and screening for specific phenotypes like motility and oil production.
Area of Science:
- Algal biotechnology
- Molecular genetics
- Synthetic biology
Background:
- Chlamydomonas reinhardtii is a model organism for flagella and biofuel research.
- Efficient gene editing tools like CRISPR-Cas9 are not widely established in this alga.
- Random insertional mutagenesis offers an alternative for generating null mutants but is resource-intensive.
Purpose of the Study:
- To establish a large-scale, efficiently maintained insertional mutant library in Chlamydomonas reinhardtii.
- To facilitate both reverse and forward genetics approaches for gene discovery and functional analysis.
- To enable high-throughput screening for specific cellular phenotypes.
Main Methods:
- Generation and maintenance of approximately 150,000 individual insertional mutants.
- Development of a screening strategy using insertion cassette-specific primers and polymerase chain reaction.
- Construction of a novel insertion cassette with enhanced gene interruption efficiency.
Main Results:
- Successfully generated and maintained a large mutant library for genetic analysis.
- Identified 26 mutants for 20 specific genes.
- Discovered 967 mutants with motility defects and 929 with impaired oil droplet assembly.
Conclusions:
- The developed mutant library serves as a versatile platform for isolating mutants of interest.
- It facilitates the screening for diverse phenotypes, including those related to motility and lipid accumulation.
- This resource accelerates genetic studies in Chlamydomonas reinhardtii.
