The plant growth promoting bacterium B. amyloliquefaciens FZB42

Bacillus amyloliquefaciens FZB42

There are several features which make B. amyloliquefaciens FZB42 especially attractive as starting point for developing a new generation of rationally designed bioformulations.

  1. Knowledge of the complete genome sequence and of several molecular features involved in biocontrol and plant growth promotion
  2. Genetic amenability, that means possibility to generate mutant strains by applying genetic techniques formerly developed for B. subtilis and meanwhile adapted to this strain
  3. Existence of a large pool of defined mutants generated by homologous recombination
  4. Experience in large scale fermentation and manufacturing of stable product formulations by Abitep G.m.b.H Berlin.
  5. High potential for root colonization and excellent plant growth promoting properties
  6. FZB42 is a representative of a specific group of root colonizing bacilli, which is mostly related to B. amyloliquefaciens but harbours significant differences to the type strain DSM7. Our preliminary analysis has revealed that nearly all of the commercially available Bacillus strains, claimed to enhance plant growth belong to the same group. Therefore all results obtained for FZB42 are simultaneously representative for the majority of PGPR bacilli (many of them are misidentified as B. subtilis).

B. amyloliquefaciens is the first gram-positive bacterium with PGP-activities whose genome sequence is completely uncovered allowing us now to elucidate the gene functions important for plant growth promotion and biocontrol and to develop a new generation of rationally designed Bacillus based formulations with improved quality.

Literatur
Idris, E.S., Iglesias, D.J., Talon, M., and Borriss, R. Tryptophan-Dependent Production of Indole-3-Acetic Acid (IAA) Affects Level of Plant Growth Promotion by Bacillus amyloliquefaciens FZB42. MPMI Vol. 20, No. 6, 2007, pp. 619-626.