Current Microbiology

, Volume 4, Issue 5, pp 317–320 | Cite as

Pseudomonas siderophores: A mechanism explaining disease-suppressive soils

  • Joseph W. Kloepper
  • John Leong
  • Martin Teintze
  • Milton N. Schroth


The addition of either fluorescentPseudomonas strain B10, isolated from a take-all suppressive soil, or its siderophore, pseudobactin, to bothFusarium-wilt and take-all conducive soils inoculated withFusarium oxysporum f. sp.lini orGaeumannomyces graminis var.tritici, respectively, rendered them disease suppressive. Our findings suggest that disease suppressiveness is caused in part by microbial siderophores which efficiently complex iron(III) in soils, making it unavailable to pathogens, thus inhibiting their growth. Amendment of exogenous iron(III) to disease-suppressive soils converted them to conductive soils presumably by repressing siderophore production.


Barley Seed Current Microbiology Flax Seed Conducive Soil Suppressive Soil 
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Copyright information

© Springer-Verlag New York Inc 1980

Authors and Affiliations

  • Joseph W. Kloepper
    • 1
  • John Leong
    • 2
  • Martin Teintze
    • 2
  • Milton N. Schroth
    • 1
  1. 1.Department of Plant PathologyUniversity of CaliforniaBerkeleyUSA
  2. 2.Department of ChemistryUniversity of California, San DiegoLa JollaUSA

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