[1] Other areas of their use include studies of photosynthesis, photoreception, and the relationship of molecular structure to the biological function of subcellular particles, among others.

[3] The reported morphological abnormalities and unusual cell division reveal important information about the biological impacts of phenol on marine organisms.

Using E. gracilis as a bioindicator can determine the level of phenol exposure in marine ecosystems and adopt appropriate mitigation actions to protect water quality and biodiversity.

Additionally, E. gracilis contains a light-sensitive eyespot, or stigma, which enables it to exhibit phototaxis by moving towards light sources for photosynthesis.

These membranes are an evolutionary vestige of the secondary endosymbiotic event that occurred between a phagotrophic eukaryovorous euglenid and a Pyramimonas-related green alga.

[8] In industry, Euglena gracilis is genetically engineered to produce a flour used to manufacture various protein-rich, non-animal foods.