摘要: Chemically mediated interactions between microalgae and other organisms, are widespread in nature. They important structuring algal communities, bloom formation, development, they affect the productivity of algae. In recent years understanding these types has greatly improved, but many cases exact mechanisms still little understood, actual bioactive compounds not known. Many instances allelopathic have been recorded, including presence autoinhibitors some Some identified include free fatty acids (e.g. green algae), polyunsaturated aldehydes (in diatoms) alkaloid cylindrospermopsin cyanobacteria). Other chemically-mediated pheromones hormones which reproduction development. Finally, there is evidence for affecting bacterial quorum sensing, sensing cyanobacteria.