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

Abstract

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.

Authors:
 [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
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1570509
Resource Type:
Published Article
Journal Name:
FEMS Microbiology Ecology
Additional Journal Information:
Journal Name: FEMS Microbiology Ecology Journal Volume: 95 Journal Issue: 11; Journal ID: ISSN 0168-6496
Publisher:
Oxford University Press
Country of Publication:
Netherlands
Language:
English

Citation Formats

Hashmi, Isha, Paul, Christophe, Al-Dourobi, Andrej, Sandoz, Frederic, Deschamps, Priscilla, Junier, Thomas, Junier, Pilar, and Bindschedler, Saskia. Comparison of the plant growth-promotion performance of a consortium of Bacilli inoculated as endospores or as vegetative cells. Netherlands: N. p., 2019. Web. doi:10.1093/femsec/fiz147.
Hashmi, Isha, Paul, Christophe, Al-Dourobi, Andrej, Sandoz, Frederic, Deschamps, Priscilla, Junier, Thomas, Junier, Pilar, & Bindschedler, Saskia. Comparison of the plant growth-promotion performance of a consortium of Bacilli inoculated as endospores or as vegetative cells. Netherlands. doi:10.1093/femsec/fiz147.
Hashmi, Isha, Paul, Christophe, Al-Dourobi, Andrej, Sandoz, Frederic, Deschamps, Priscilla, Junier, Thomas, Junier, Pilar, and Bindschedler, Saskia. Thu . "Comparison of the plant growth-promotion performance of a consortium of Bacilli inoculated as endospores or as vegetative cells". Netherlands. doi:10.1093/femsec/fiz147.
@article{osti_1570509,
title = {Comparison of the plant growth-promotion performance of a consortium of Bacilli inoculated as endospores or as vegetative cells},
author = {Hashmi, Isha and Paul, Christophe and Al-Dourobi, Andrej and Sandoz, Frederic and Deschamps, Priscilla and Junier, Thomas and Junier, Pilar and Bindschedler, Saskia},
abstractNote = {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.},
doi = {10.1093/femsec/fiz147},
journal = {FEMS Microbiology Ecology},
number = 11,
volume = 95,
place = {Netherlands},
year = {2019},
month = {9}
}

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Works referenced in this record:

Identification of common molecular subsequences
journal, March 1981


Universal chemical assay for the detection and determination of siderophores
journal, January 1987


Introducing mothur: Open-Source, Platform-Independent, Community-Supported Software for Describing and Comparing Microbial Communities
journal, October 2009

  • Schloss, P. D.; Westcott, S. L.; Ryabin, T.
  • Applied and Environmental Microbiology, Vol. 75, Issue 23, p. 7537-7541
  • DOI: 10.1128/AEM.01541-09