Abstract

Streptomycetes are the largest taxon of antibiotic producers in the microbial world. Nevertheless,they are less studied than other biocontrol agents against Fusarium diseases and, perhaps, plantdiseases in general. Plant diseases incited by Fusarium species are notably challenging. Four speciescomplexes in the genus are pathogenic: Fusarium fujikuroi, F. graminearum, F. solani and F. oxysporum.Being a vascular pathogen, F. oxysporum is particularly difficult to control by using microbialantagonists. Most research has remained at early experimental stages, and only few Streptomyces spp.strains have been assayed under diverse conditions. Few commercial products consisting ofStreptomyces spp. have often provided fluctuating results across trials. Five biocontrol trialsconducted in the field using streptomycetes report reductions of diverse Fusarium wilts by 0-55%,with one case (cucumber) of yield increase by 1.3-fold. Among 38 articles dealing with potexperiments,16 report a disease control level above 50%, seven of which with a level above 70%. Thechitinolytic activity of Streptomyces spp. strains plays an important role in the biocontrol of Fusariumdiseases, and the plant growth promotion trait is a cherished outcome. More attention is being paidto strains endophytic, producing volatile organic compounds, or to the identification of antibioticsand metabolites responsible for the biocontrol. Bioformulation is a critical point in the use ofbiocontrol agents, but it has been still poorly considered in the experiments. The biocontrol efficacyof well-designed streptomycete consortia or the so-called microbial synthetic communities, possiblyin proper bioformulations, and the role of streptomycetes in the reduction of mycotoxins in thegrains are aspects that would merit further investigation in the future.

Autore Pugliese

• Bubici Giovanni Nicola

Tutti gli autori

• Bubici G.

Titolo volume/Rivista

Perspectives in agriculture, veterinary science, nutrition and natural resources

Anno di pubblicazione

2018

ISSN

1749-8848

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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