|
Abstract Two algae-lysing actinomycetes, named as B-10 and G-11, were isolated from the soil in Wuhan. Their algicidal effect on Heterosigma akashiwo, Scrippsiella trochoidea, Prorocentrum minimum and Golden algae were tested, and the algicidal mechanisms were discussed. The two Actinomycetes were then identified according to their characteristics in morphology, physiological and biochemical properties and 16S rDNA sequences. Actinomycetes B-10 and G-11 could remove 90% and 99.44% of H. akashiwo at the inoculum dose of 1%(V/V) in 5 days, respectively; B-10 and G-11 could also remove P. minimum and G. algae ; the algicidal abilities of the B-10 and G-11 were stable in the culture of 5 generations; both B-10 and G-11 lysed H. akashiwo by releasing algicidal substances, which were susceptible to the temperature higher than 100℃; B-10 belongs to Streptomyces microflavus and G-11 belongs to Streptomyces variabilis.
|
|
Received: 24 May 2010
|
|
|
|
