Screening and Identification of Antimicrobial Compounds from Streptomyces bottropensis Suppressing Rice Bacterial Blight

Suppressing activity of staurosporine from Streptomyces sp. MJM4426 against rice bacterial blight disease

“…oryzae KACC 10331 culture broth was adjusted to 0·5 at UV 600 nm by a GENESYS 6 UV‐Vis Spectrophotometer (Thermo Scientific, Madison, WI, USA) and diluted 1 : 20 (v/v) in Mueller–Hinton broth medium. Two hundred microlitres of medium was placed into a 96‐well plate and compound A was treated with the serial dilution method from 50 to 3·125 μ mol l −1 , as recommended by the National Committee for Clinical Laboratory Standards (NCCLS) (Park et al …”

“…Isolation of the active compounds was performed as previously described with some modification (Park et al 2011). The crude extract was eluted on a Sephadex LH-20 column (110 9 2Á2 cm) in 80% aqueous methanol ( Fig.…”

Biological Control of Xanthomonas Oryzae pv. Oryzae Causing Rice Bacterial Blight Disease by Streptomyces toxytricini VN08-A-12, Isolated from Soil and Leaf-litter Samples in Vietnam

“…The leaf source of VN08-A-12 isolation suggests that the Streptomyces toxytricini VN08-A-12 may be easily adapted to the rice field both on rice leaves and in the soil. To our knowledge, this is the first report of Streptomyces toxytricini being a potential biological agent for controlling BB in rice whereas Lysobacter antibiocus isolated from the rhizosphere of rice in China Ji, et al, 2008 and Streptomyces bottropensis isolated from soil in Korea Park et al, 2011 were recently reported.…”

“…Actinomycetes, mainly the genus Streptomyces, have produced a wide variety of bioactive compounds, including antibiotics Anzai et al, 2008 . In recent studies, Streptomyces activity against Xoo strains has been reported Ndonde and Semu, 2000;Yan et al, 2000;Park et al, 2011 and some bioactive compounds have been identified Park et al, 2011 , suggesting that actinomycetes are potential biological agents for the control of Xoo.…”

Taxonomic and functional diversity ofStreptomycesin a forest soil

“…The important secondary metabolism of Streptomyces also represents a great tool kit to interact with other microorganisms. Antibiotic production confers Streptomyces crucial advantages in ecological niche occupancy by exerting a high selective pressure on a wide range of organisms from insects (Liao et al, 2009;Wang et al, 2011), fungi (Meschke & Schrempf, 2010;Li et al, 2012a;Zhang et al, 2013) and other bacteria species (Park et al, 2011;Poulsen et al, 2011;Lawson & Stevenson, 2012) as well as closely related Streptomyces strains (Neeno-Eckwall et al, 2001;Vetsigian et al, 2011). In other cases, the Streptomyces-secreted secondary metabolites are beneficial to other organisms.…”