Carbon metabolism of Beauveria bassiana may be related to virulence against Plutella xylostella and Leptinotarsa decemlineata

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Abstract

Fermentation of 49 carbohydrates and oxidation and assimilation of 96 substrates were examined for ten Beauveria bassiana isolates. Principal component analysis indicated that there are significant differences among isolates for utilization of some substrates. Esculine and D- glucose were positively fermented by all isolates. Isolates were grouped into four clusters on the basis of hierarchial analysis of 96-hr reaction data. Using canonical variate analysis, it was determined that N-acetyl glucosamine fermentation and β-cyclodextrin oxidation were strongly and positively correlated with pathogenicity of isolates against diamondback moth, Plutella xylostella and Colorado potato beetle, Leptinotarsa decemlineata. In contrast, Sebacic acid assimilation was negatively correlated to virulence against these insects.

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Journal of Entomological Society of Iran
Volume 25, Issue 1
September 2005
Pages 85-95

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