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BioControl

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01.12.2010

Secondary metabolites produced by Propionicimonas sp. (ENT-18) induce histological abnormalities in the sclerotia of Sclerotinia sclerotiorum

verfasst von: Tiago D. Zucchi, Luis G. Almeida, Fábio C. A. Dossi, Fernando L. Cônsoli

Erschienen in: BioControl | Ausgabe 6/2010

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Abstract

Sclerotinia sclerotiorum is a highly aggressive pathogen that causes great economic losses, especially in temperate climates. Several biological control agents are available, but actinobacteria have seldom been used to control this fungus. Our objective was to evaluate the efficiency and ultrastructural effects of the secondary metabolites produced by the ant-associated actinobacterium Propionicimonas sp. ENT-18 in controlling the sclerotia of S. sclerotiorum. We demonstrated total inhibition of sclerotia treated with 62.5 μg/10 μl of an ethyl acetate extract of compounds produced by ENT-18, and calculated an LC₅₀ of 1.69 μg/sclerotia. Histological and ultrastructural analysis indicated that the cells of the treated sclerotia were severely damaged, suggesting direct action of the biomolecule(s) produced by the actinobacterium ENT-18 on the cell structure of the medullae and rind cell wall. This is the first report demonstrating a novel property of Propionicimonas sp.—antifungal activity against S. sclerotiorum.

Vorheriger Artikel Disease suppression and crop improvement in moong beans (Vigna radiata) through Pseudomonas and Burkholderia strains isolated from semi arid region of Rajasthan, India

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Titel: Secondary metabolites produced by Propionicimonas sp. (ENT-18) induce histological abnormalities in the sclerotia of Sclerotinia sclerotiorum
verfasst von: Tiago D. Zucchi
Luis G. Almeida
Fábio C. A. Dossi
Fernando L. Cônsoli
Publikationsdatum: 01.12.2010
Verlag: Springer Netherlands
Erschienen in: BioControl / Ausgabe 6/2010
Print ISSN: 1386-6141
Elektronische ISSN: 1573-8248
DOI: https://doi.org/10.1007/s10526-010-9295-9

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