Marker-free genetic manipulations in yeast using CRISPR/CAS9 system

Area of Science:

• * Molecular Biology
• * Genetics
• * Yeast Biology

Background:

• * Budding yeast is a crucial model organism for biological research.
• * Traditional genetic manipulation relies on selectable markers, which can cause unwanted effects.
• * Marker-free techniques are needed for precise genetic modifications in yeast.

Purpose of the Study:

• * To develop a marker-free method for genetic manipulation in budding yeast.
• * To enable efficient gene/promoter replacement and operator array integration.
• * To facilitate the use of existing yeast strains for advanced genetic engineering.

Main Methods:

• * Integration of selectable markers followed by CRISPR/CAS9 genome editing.
• * Application of the method for whole gene and promoter replacements.
• * Demonstration of high-efficiency operator array integration.

Main Results:

• * Successful marker-free genetic modifications were achieved in yeast.
• * The method proved effective for gene and promoter replacements.
• * High-efficiency integration of operator arrays was demonstrated.

Conclusions:

• * This combined approach offers a powerful tool for marker-free genetic manipulation in yeast.
• * It allows for significant genetic alterations in numerous existing yeast strains.
• * The technique is cloning-free, streamlining genetic engineering workflows.