Inhibition of Fungal Growth and Induction of a Novel Volatilome in Response to Chromobacterium vaccinii Volatile Organic Compounds

Frontiers in Microbiology
Ghazal EbadzadsahraiHeather D Bean

Abstract

The study of chemical bioactivity in the rhizosphere has recently broadened to include microbial metabolites, and their roles in niche construction and competition via growth promotion, growth inhibition, and toxicity. Several prior studies have identified bacteria that produce volatile organic compounds (VOCs) with antifungal activities, indicating their potential use as biocontrol organisms to suppress phytopathogenic fungi and reduce agricultural losses. We sought to expand the roster of soil bacteria with known antifungal VOCs by testing bacterial isolates from wild and cultivated cranberry bog soils for VOCs that inhibit the growth of four common fungal and oomycete plant pathogens, and Trichoderma sp. Twenty one of the screened isolates inhibited the growth of at least one fungus by the production of VOCs, and isolates of Chromobacterium vaccinii had broad antifungal VOC activity, with growth inhibition over 90% for some fungi. Fungi exposed to C. vaccinii VOCs had extensive morphological abnormalities such as swollen hyphal cells, vacuolar depositions, and cell wall alterations. Quorum-insensitive cviR- mutants of C. vaccinii were significantly less fungistatic, indicating a role for quorum regulation in the production o...Continue Reading

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Citations

Jul 30, 2020·Journal of Fungi·Hasan NazikDavid A Stevens
Oct 2, 2021·Journal, Genetic Engineering & Biotechnology·Sushil K SharmaAnil K Saxena
Nov 3, 2021·Journal of Experimental Botany·Rouhallah SharifiChoong-Min Ryu

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Methods Mentioned

BETA
light microscopy
transmission electron microscopy

Software Mentioned

Statistical Compare
Maestro
CellSens Entry
Statistical Package for the Social Sciences ( SPSS )
R
R ICC package
R Foundation for Statistical Computing
ChromaTOF

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An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.

Antifungals

An antifungal, also known as an antimycotic medication, is a pharmaceutical fungicide or fungistatic used to treat and prevent mycosis such as athlete's foot, ringworm, candidiasis, cryptococcal meningitis, and others. Discover the latest research on antifungals here.