Acta Entomologica Sinica (2007) 50, 461-466

Qiong-Bo Hu, Shun-Xiang Ren and Shu-Yan Liu (2007)
[Purification of destruxins produced by Metarhizium anisopliae and bioassay of their insecticidal activities against grubs]
Acta Entomologica Sinica 50 (5), 461-466
Abstract: Five crystal destruxins were purified from the fermentation broth of Metarhizium anisopliae var. anisopliae strain MaQ10 via preparative HPLC and re-crystalization, which were classified to destruxin A, B, C, E and A₂, respectively. Contact toxicities of destruxins A and B against the grubs Exolontha serrulata (Gyllenhall) and Holotrichia ovata Chang were bioassayed by immersing the insects in aqueous dilutions. The results indicated that at 96 and 120 h after treatment, the LC₅₀s of destruxins A and B were estimated as 78.1571 mg/L and 88.7562 mg/L towards E. serrulata and 66.5308 mg/L and 79.4309 mg/L towards H. ovata, respectively. At the concentration of 300 mg/L, the LT₅₀s of destruxins A and B were 13.4159 h and 10.5331 h towards E. serrulata, and 13.6399 h and 9.9451 h towards H. ovata, respectively.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)
Database assignments for author(s): Shun-Xiang Ren

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Metarhizium anisopliae (entomopathogen)