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  • Antifungal potential of Lauraceae rhizobacteria from a tropical montane cloud forest against Fusarium spp.

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    REVERCHON227054.pdf (2.114Mb)
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    Author(s)
    Reverchon, Frederique
    Garcia-Quiroz, Wilians
    Guevara-Avendano, Edgar
    Solis-Garcia, Itzel A
    Ferrera-Rodriguez, Ofelia
    Lorea-Hernandez, Francisco
    Griffith University Author(s)
    Reverchon, Frederique
    Year published
    2019
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    Abstract
    The occurrence of pests and diseases can affect plant health and productivity in ecosystems that are already at risk, such as tropical montane cloud forests. The use of naturally occurring microorganisms is a promising alternative to mitigate forest tree fungal pathogens. The objectives of this study were to isolate rhizobacteria associated with five Lauraceae species from a Mexican tropical montane cloud forest and to evaluate their antifungal activity against Fusarium solani and F. oxysporum. Fifty-six rhizobacterial isolates were assessed for mycelial growth inhibition of Fusarium spp. through dual culture assays. ...
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    The occurrence of pests and diseases can affect plant health and productivity in ecosystems that are already at risk, such as tropical montane cloud forests. The use of naturally occurring microorganisms is a promising alternative to mitigate forest tree fungal pathogens. The objectives of this study were to isolate rhizobacteria associated with five Lauraceae species from a Mexican tropical montane cloud forest and to evaluate their antifungal activity against Fusarium solani and F. oxysporum. Fifty-six rhizobacterial isolates were assessed for mycelial growth inhibition of Fusarium spp. through dual culture assays. Thirty-three isolates significantly reduced the growth of F. solani, while 21 isolates inhibited that of F. oxysporum. The nine bacterial isolates that inhibited fungal growth by more than 20% were identified through 16S rDNA gene sequence analysis; they belonged to the genera Streptomyces, Arthrobacter, Pseudomonas, and Staphylococcus. The volatile organic compounds (VOC) produced by these nine isolates were evaluated for antifungal activity. Six isolates (Streptomyces sp., Arthrobacter sp., Pseudomonas sp., and Staphylococcus spp.) successfully inhibited F. solani mycelial growth by up to 37% through VOC emission, while only the isolate INECOL-21 (Pseudomonas sp.) inhibited F. oxysporum. This work provides information on the microbiota of Mexican Lauraceae and is one of the few studies identifying forest tree–associated microbes with inhibitory activity against tree pathogens.
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    Journal Title
    Brazilian Journal of Microbiology
    DOI
    https://doi.org/10.1007/s42770-019-00094-2
    Copyright Statement
    © 2019 Springer. This is an electronic version of an article published in Brazilian Journal of Microbiology, AOV. Brazilian Journal of Microbiology is available online at: http://link.springer.com/ with the open URL of your article.
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Microbiology
    Medical microbiology
    Publication URI
    http://hdl.handle.net/10072/385786
    Collection
    • Journal articles

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