Suppression of septoria tritici blotch and leaf rust of wheat by recombinant cyanide-producing strains of Peudomonas putida

Moshe A. Flaishman, Zahir Eyal, Aviah Zilberstein, Christophe Voisard, Dieter Haas

Research output: Contribution to journalArticlepeer-review

Abstract

Pseudomonas putida strain BK8661, which produces siderophore(s), antibiotic(s), and low levels of hydrogen cyanide (HCN), suppresses growth of Septoria tritici and Puccinia recondita f. sp. tritici in vitro and on wheat leaves. Pleiotropic mutants of strain BKS661 deficient in siderophore and antibiotic synthesis were significantly less effective in suppressing symptoms than was the wild type. HCN overproducing derivatives of the pleiotropic mutants were constructed by the integration of the hcnABC gene cluster from Pseudomons fluorescens CHA0. In the absence of siderophore(s) and antibiotic(s), HCN production by the overproducing bacterial strains resulted in a small but statistically significant increase in the suppression of symptoms caused by S. tritici and P. recondita f. sp. tritici on wheat seedling leaves.

Original languageEnglish
Pages (from-to)642-645
Number of pages4
JournalMolecular Plant-Microbe Interactions
Volume9
Issue number7
DOIs
StatePublished - Sep 1996

Keywords

  • Biological control
  • Triticum spp

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