Economic marine macroalgae are extensively farmed in China, Japan, South Korea, and Southeast Asia. These algal species exhibit considerable economic and ecological value. Algal diseases are major obstacle to mariculture and have resulted in serious economic losses. The study of algal diseases remains in its infancy and has mainly focused on pathogen identification. Further, the diversity of pathogens and the complexity of the marine microbiome environment have increased the difficulty associated with pathogen isolation and identification. This study provides a summary of the information on economic algae and their diseases. Furthermore, it discusses the causes of the diseases, the pathogen diversity and pathogenicity, and the methods for pathogen identification, detection, and prevention. Additionally, the future prospects with respect to the prevention and control of algal diseases in China are also discussed to provide a reference for conducting further research on algal diseases.
detection and prevention