Related Experiment Video
Updated: May 28, 2026
07:44
Analysis of Fatty Acid Content and Composition in Microalgae
Published on: October 1, 2013
Making fish oils in plants: from alpha to omega
1Rothamsted Research, Harpenden, AL5 2JQ, UK.
The New Phytologist
|May 27, 2026
Summary
Developing genetically modified (GM) crops to produce omega-3 fatty acids is complex. This review highlights overlooked challenges like transgene silencing and proposes solutions for a sustainable bioeconomy.
Area of Science:
- Plant Biotechnology
- Metabolic Engineering
- Sustainable Bioeconomy
Background:
- Transgenic accumulation of omega-3 long-chain polyunsaturated fatty acids (LC-PUFAs) in plants is a complex metabolic engineering feat.
- GM crops producing these essential fatty acids have advanced to regulated products over 25 years, involving public and private sector collaboration.
Purpose of the Study:
- To review less familiar aspects of metabolic engineering for omega-3 production in plants.
- To prompt renewed consideration of unresolved issues in plant biotechnology.
- To highlight the significance of transgene silencing and multicistronic polyprotein fusions.
Main Methods:
- Review of existing research on metabolic engineering for omega-3 LC-PUFA production in plants.
- Discussion of transgene silencing mechanisms and their impact.
- Exploration of multicistronic polyprotein fusions as a strategy to simplify construct design.
Main Results:
- The development of GM crops for omega-3 production is a sophisticated process with ongoing challenges.
- Transgene silencing remains a significant, often overlooked, hurdle in achieving stable expression.
- Multicistronic polyprotein fusions offer a potential method to reduce genetic construct complexity and sequence repetition.
Conclusions:
- Addressing neglected topics like transgene silencing is crucial for advancing plant biotechnology.
- Innovative approaches such as polyprotein fusions may streamline the engineering of complex metabolic pathways.
- Further research in these areas is needed to support a sustainable bioeconomy through advanced GM crops.
Related Concept Videos
01:25Biofuels
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
03:38Structure of Lipids
Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon-carbon or carbon-hydrogen bonds. Non-polar molecules are hydrophobic (“water fearing”), or insoluble in water. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of fats. Lipids also provide insulation from the environment for plants and animals. For example, they help keep aquatic birds and...
01:27Upstream Processing
Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...
01:29Downstream Processing
Downstream processing begins once fermentation is complete and involves a series of steps to recover and purify products such as acids, vitamins, antibiotics, or proteins.Cell HarvestingFor example, for intracellular protein-based products, the first step is harvesting the cells. This is typically achieved using centrifugation or filtration to separate the cells from the liquid phase.Cell Disruption for Intracellular ProductsIf the target product is intracellular, the harvested cells must be...
01:28Overview of Fatty Acid Metabolism
Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
01:28Overview of Algae
The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...