Although Prochlorococcus can be grown in laboratory conditions, scaling it for industrial use remains difficult due to a combination of biological and environmental constraints.
1. Sensitivity to environmental conditions
Prochlorococcus requires stable temperature, low nutrient levels, and controlled light. Even small fluctuations can disrupt growth, making it poorly suited to large-scale systems where conditions are harder to maintain consistently.
2. Slow growth and low biomass yield
Compared to commercially cultivated microalgae, Prochlorococcus grows relatively slowly and does not reach high cell densities. This limits how much biomass can be produced over time.
3. Dependence on microbial interactions
In natural environments, Prochlorococcus relies on helper bacteria to remove harmful byproducts such as reactive oxygen species. Replicating these interactions reliably at scale adds significant complexity.
4. Poor performance in high-density systems
Unlike Spirulina and Chlorella, which tolerate crowding and variable conditions, Prochlorococcus performs poorly in high-density, industrial cultivation setups.
Prochlorococcus cultivation remains largely limited to research-scale systems, where conditions can be tightly controlled. These traits of Prochlorococcus are advantageous in nature but it is not suitable for current industrial cultivation approaches.
Large-scale cultivation is challenging because Prochlorococcus requires stable, low-resource conditions that are difficult to maintain in industrial systems.