Application of biosurfactant from Bacillus subtilis C9 for controlling cladoceran grazers in algal cultivation systems.

ABSTRACT: Open algal cultivation platforms often suffer crop losses to herbivorous grazers that have potential to devastate biomass production within a few days. While a number of studies suggest synthetic chemicals as control agents for voracious algal grazers, environmental and safety concerns associated with the use of these chemicals encourage the exploration of alternative biological control agents. We hereby propose the application of a biosurfactant produced by Bacillus subtilis C9 (referred to as C9-biosurfactant) for controlling cladoceran grazers commonly found in algal cultivation systems. The results indicated that C9-biosurfactant completely eradicated Daphnia pulex and Moina macrocopa within 24 hours when concentrations were equal to or exceeded 6 mg/L. Moreover, supplying C9-biosurfac

SUBMITTER: Yun JH 

PROVIDER: S-EPMC5876376 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature