Biological Control
The potential of Lysobacter species as biological control agents for plant diseases has been recognized recently. Among L. enzymogenes strains, C3 is the most thoroughly characterized strain at both the molecular and biological levels. The ecological versatility of the strain is reflected by the range of diseases it is able to control, as well as the various plant hosts and plant parts it is capable of colonizing. For example, L. enzymogenes strain C3 (erroneously identified as Stenotrophomonas maltophilia) has been reported to control foliar diseases such as leaf spot of tall fescue caused by Bipolaris sorokiniana, bean rust caused by Uromyces appendiculatus and Fusarium head blight of wheat. L. enzymogenes strain C3 also has been reported to suppress soilborne diseases, such as brown patch in turfgrass caused by Rhizoctonia solani, the seedling disease Pythium damping-off of sugarbeet and summer patch disease of Kentucky bluegrass caused by the root-infecting Magnaporthe poae. Lysobacter sp. SB-K88 has been found to suppress damping-off disease in sugar beet and spinach through antibiosis and characteristic root colonization in perpendicular fashion Islam et al. (2005).
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