Novel l-amino acid oxidase with algicidal activity against toxic cyanobacterium Microcystis aeruginosa synthesized by a bacterium Aquimarina sp.

Growth inhibition and microcystin degradation effects of Acinetobacter guillouiae A2 on Microcystis aeruginosa

“…We showed that growth of M. aeruginosa was not inhibited by bacterial pellets (cells), but was affected by cell-free filtrates, indicating that the A2 strain exhibited algicidal activity through indirect attack, and bacterial attachment was not necessary. Previous studies made it clear that algicidal compounds excreted by bacteria might be proteases [39], amino acids [40], biosurfactants [41] or antibiotics [42]. Since the cell-free filtrates still possessed algicidal activity after heat treatment at 85 C for 1 h, the possibility of enzymatic activity in these cases was excluded.…”

A Novel Algicide: Evidence of the Effect of a Fatty Acid Compound from the Marine Bacterium, Vibrio sp. BS02 on the Harmful Dinoflagellate, Alexandrium tamarense

“…The algicidal substances reported in the literature are an array of secondary metabolites produced by algicidal bacteria, which mainly include biosurfactant [35], proteins [24], [36], amino acid [37], antibiotic [38], [39] and pigments [40]. Previous studies indicate that a newly identified member of the γ-proteobacteria, Hahella chejuensis KCTC 2396 releases an antibiotic prodigiosin that exhibits inhibition effects on Cochlodinium polykrikoides [40].…”

Draft Genome Sequence of the Putative Marine Pathogen Aquimarina sp. Strain I32.4

“…Trans-ATPKS biosynthesis produces structurally diverse molecules in other bacteria, including the cytotoxic and antitumor compounds pederin and onnamide (9). Other species in this genus have been shown to have algicidal activity against toxic cyanobacterium strains (10). …”