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Molecules 2016, 21(8), 1101; doi:10.3390/molecules21081101

A Novel Insecticidal Peptide SLP1 Produced by Streptomyces laindensis H008 against Lipaphis erysimi

1
Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, Heilongjiang, China
2
College of Agricultural Resource and Environment, Heilongjiang University, Harbin 150080, China
3
College of Life Science, Northeast Forestry University, Harbin 150040, China
*
Author to whom correspondence should be addressed.
Academic Editor: Fernando Albericio
Received: 9 July 2016 / Revised: 15 August 2016 / Accepted: 18 August 2016 / Published: 22 August 2016
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Abstract

Aphids are major insect pests for crops, causing damage by direct feeding and transmission of plant diseases. This paper was completed to discover and characterize a novel insecticidal metabolite against aphids from soil actinobacteria. An insecticidal activity assay was used to screen 180 bacterial strains from soil samples against mustard aphid, Lipaphis erysimi. The bacterial strain H008 showed the strongest activity, and it was identified by the phylogenetic analysis of the 16S rRNA gene and physiological traits as a novel species of genus Streptomyces (named S. laindensis H008). With the bioassay-guided method, the insecticidal extract from S. laindensis H008 was subjected to chromatographic separations. Finally, a novel insecticidal peptide was purified from Streptomyces laindensis H008 against L. erysimi, and it was determined to be S-E-P-A-Q-I-V-I-V-D-G-V-D-Y-W by TOF-MS and amino acid analysis. View Full-Text
Keywords: actinobacteria; Streptomyces; peptide; insecticidal; Lipaphis erysimi; Rhopalosiphum pseudobrassicae; pesticide; aphid actinobacteria; Streptomyces; peptide; insecticidal; Lipaphis erysimi; Rhopalosiphum pseudobrassicae; pesticide; aphid
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Xu, L.; Liang, K.; Duan, B.; Yu, M.; Meng, W.; Wang, Q.; Yu, Q. A Novel Insecticidal Peptide SLP1 Produced by Streptomyces laindensis H008 against Lipaphis erysimi. Molecules 2016, 21, 1101.

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