Genetic engineering of microalgae for enhanced biorefinery capabilities

Area of Science:

• Biotechnology and Synthetic Biology
• Sustainable Energy and Bio-based Products
• Environmental Science and Ecology

Background:

• Microalgae-derived bioproducts are gaining attention as sustainable resources for energy and food due to their novel characteristics and the increasing demand driven by population growth and depleting fossil fuels.
• Current commercialization of algae-based products is limited by high production costs and low yields.
• Genomic and metabolic engineering approaches are crucial for enhancing the quality and quantity of desired products from microalgae.

Purpose of the Study:

• To explore the potential of advanced genome editing tools in improving microalgae for bioproduct generation.
• To assess the role of omics approaches in enhancing algal biorefinery capabilities.
• To evaluate the future prospects and challenges of transgenic microalgae in the global market.

Main Methods:

• Application of novel genome editing tools such as RNA interference (RNAi), zinc-finger nucleases (ZNFs), transcription activator-like effector nucleases (TALENs), and CRISPR/Cas9.
• Utilizing genetic and metabolic engineering for precise and rapid enhancement of microalgal traits.
• Employing omics approaches for advanced biorefinery development in algae.

Main Results:

• Genome editing tools significantly enhance the quality and quantity of desired products from microalgae compared to random mutagenesis.
• Transgenic microalgae demonstrate potential for increased biomass yield, elevated carbon dioxide uptake, and accumulation of high-value compounds.
• Engineering approaches promise reduced cultivation and production costs, contributing to market viability.

Conclusions:

• Transgenic microalgae hold significant promise for the global algal market, offering solutions for sustainable energy and food resources.
• Continued development of omics approaches and genetic engineering will be key to overcoming current commercialization barriers.
• Rigorous risk assessment and strict regulatory monitoring are essential before introducing genetically modified microalgae into natural ecosystems due to their role as primary producers.