Cyclic Lipopeptides with Herbicidal and Insecticidal Activities Produced by Bacillus clausii DTM1

Abstract

Seven cyclic lipopeptide biosurfactants (1–7) were isolated for the first time from the fermentation broth of endophytic Bacillus clausii DTM1 and were identified as anteisoC₁₃[Val7] surfactin-(L-Glu)-O-methyl-ester (1), anteisoC₁₂[Val7] surfactin (2), anteisoC₁₅[Val7] surfactin (3), isoC₁₄[Leu7] surfactin (4), anteisoC₁₂[Leu7] surfactin (5), nC₁₃[Leu7] surfactin (6), and anteisoC₁₄[Leu7] surfactin-(L-Glu)-O-methyl-ester (7); 1 has not been isolated before as a natural product from any source. Plate-based herbicide and insecticide bioassays showed that all compounds exhibited interesting insecticidal and herbicidal activities.

Keywords

Bacillus clausii Surfactin Insecticidal Herbicidal

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