Advances in functional diversity and application of algicidal bacteria

Abstract:

Algicidal bacteria can kill algae or inhibit algae activity in aquatic environments.This paper focused on the application of algicidal bacteria.To be specific,we described the taxa,combination strategies,application methods,and application scenarios of algicidal bacteria in 78 genera and 5 phyla,and the target algae in 56 genera and 7 phyla.Among the bacteria,Bacillus spp.,Streptomyces spp.,and Pseudomonas spp.are most widely reported,demonstrating broad algicidal spectrum (inhibiting 23,15,and 19 genera of target algae,respectively).The mechanisms are diverse and most (83.1%) of the algicidal bacteria kill algae by secreting algicidal substances.The application methods,such as direct spilling,extracting functional substances,fixing on carriers,inoculating in a reactor,are selected based on scenarios.However,most experiments were carried out in laboratories,and the effect in the field is unclear.In the future,for the purpose of algal bloom control,studies can be carried out on the functions,application technology,and ecological safety evaluation of algicidal bacteria.