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Physiological characteristics and virulence of auxotrophic and morphological mutants of Beauveria Brongniartii (sacc.) petch (= Beauveria tenella)

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Abstract

Various mutants have been obtained of B. brongniartii, a hyphomycete pathogenic for insects. Both one pigment less and two blastospore negative mutants retained their initial virulence. Thus neither the characteristic parasitic blastospore morphology nor the synthesis of the pigment appeared to be required for pathogenesis. Analysis of avirulent mutants indicated that chitinolytic activity may be essential for fungal penetration of the cuticle.

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Authors and Affiliations

  1. Unité de Mycologie, Institut Pasteur, 25 rue du Dr. Roux, 75724, Paris, France

    S. Paris

  2. Station de Recherches de Lutte Biologique, I.N.R.A., La Minière, 78280, Guyancourt, France

    P. Ferron, J. Fargues & P. Robert

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  1. S. Paris
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  2. P. Ferron
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  3. J. Fargues
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  4. P. Robert
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Paris, S., Ferron, P., Fargues, J. et al. Physiological characteristics and virulence of auxotrophic and morphological mutants of Beauveria Brongniartii (sacc.) petch (= Beauveria tenella). Mycopathologia 91, 109–116 (1985). https://doi.org/10.1007/BF00436544

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