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Title: Comparison of the plant growth-promotion performance of a consortium of Bacilli inoculated as endospores or as vegetative cells

Journal Article · · FEMS Microbiology Ecology
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1]
  1. Laboratory of Microbiology, University of Neuchâtel, 2000 Neuchâtel, Switzerland
  2. Laboratory of Microbiology, University of Neuchâtel, 2000 Neuchâtel, Switzerland, Vital-IT Group, Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland

ABSTRACT The effect of three plant growth-promoting Bacillus strains inoculated either alone or as a consortium was tested on oat (Avena sativa) growth. The bioinoculants were applied as vegetative cells or endospores at low cell densities on the seeds and their effect was tested in sterile in vitro conditions, pot experiments, and a field trial. The in vitro seed germination assay showed that both individual bacterial inocula and bacterial consortia had positive effects on seed germination. Greenhouse pot experiments with sterile and non-sterile soil showed that consortia increased the total dry biomass of oat plants as compared to single strain inoculation and uninoculated controls. However, the positive impact on plant growth was less prominent when the bioinoculated strains had to compete with native soil microbes. Finally, the field experiment demonstrated that the consortium of vegetative cells was more efficient in promoting oat growth than the endospore consortium and the uninoculated control. Moreover, both consortia successfully colonized the roots and the rhizosphere of oat plants, without modifying the overall structure of the autochthonous soil microbial communities.

Sponsoring Organization:
USDOE
OSTI ID:
1570509
Journal Information:
FEMS Microbiology Ecology, Journal Name: FEMS Microbiology Ecology Vol. 95 Journal Issue: 11; ISSN 0168-6496
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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