Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea

The presented laboratory experiment was designed to characterize the quantity and compositional variation of algal extracellular amino acids (AAs) that may represent an alternative nutrient source in a natural environment. To resemble bloom scenarios, analyses were conducted mono- and/or co-cultures bloom-forming species Skeletonema costatum, Scrippsiella trochoidea, Ulva fasciata, Corallina officinalis during their active growth phase. study revealed S. costatum exhibited higher production dominant AAs than trochoidea. Alanine, lysine, threonine are trochoidea filtrates, which play role mucus formation mucosal phytoplankton blooms with negative ecological effects. On other hand, aspartic, glutamine, alanine, leucine macroalgae. In co-culture experiments, U. fasciata shows strong rapid allelopathic activity against these two potentially harmful species. AA offers advantage capacity absorb them form blooms. Thus, anthropogenic inorganic inputs be less important for development coastal waters. A major difference distinguishes this work from others is use specific multi-taxa cultures represents new research effort Alexandria