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Laboratory and field evaluations of entomopathogenic Lecanicillium attenuatum CNU-23 for control of green peach aphid (Myzus persicae)

Authors :
Hyang Yeon, Kim
Hyang Burm, Lee
Young Cheol, Kim
In Seon, Kim
Source :
Journal of microbiology and biotechnology. 18(12)
Publication Year :
2009

Abstract

An entomopathogenic fungus was isolated from an infected aphid. The isolate conformed most closely to Lecanicillium attenuatum CBS 402.78 (AJ292434) based on the internal transcribed spacer (ITS) region of its 18S rDNA, and thus was designated L. attenuatum CNU-23. Laboratory and field evaluations of CNU-23 blastospores were carried out for the control of green peach aphids. The laboratory evaluations of CNU-23 revealed an aphid mortality of about 80% with an estimated LT50 of 3.72 days after the application of CNU-23 at 1x106 blastospores/ ml. Meanwhile, the field evaluations of CNU-23 performed on greenhouse pepper plants during the rainy season showed an aphid mortality ranging from 72% to 97%. Significant sporulation was observed in the aphids treated with CNU-23. Therefore, the results suggest that L. attenuatum CNU-23 can be used as a biocontrol agent for green peach aphids on greenhouse pepper plants.

Details

ISSN :
10177825
Volume :
18
Issue :
12
Database :
OpenAIRE
Journal :
Journal of microbiology and biotechnology
Accession number :
edsair.pmid..........6178323f75b568fc7b25eace47db7793