ArticleArchives of microbiology2021
The auxin-producing Bacillus thuringiensis RZ2MS9 promotes the growth and modifies the root architecture of tomato (Solanum lycopersicum cv. Micro-Tom).
Article in Archives of microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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Who cites it
36 citing papers in PubMed, 100 citations in OpenAlex.
- Harnessing Multifunctional Bacillus thuringiensis for Plant Growth Promotion and Biocontrol Potential Against Spodoptera frugiperda.Journal of basic microbiology · 2026Article
- Biosurfactant-producing Bacillus spp. suppress Fusarium via fungal membrane disruption and promote cucumber growth.Scientific reports · 2026Article
- Review
- Biotechnological Potential of Extremophiles: Environmental Solutions, Challenges, and Advancements.Biology · 2025Review
- Plant growth-promoting microbes and microalgae-based biostimulants: sustainable strategy for agriculture and abiotic stress resilience.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Review
- Article
- Co-inoculation with Bacillus thuringiensis RZ2MS9 and rhizobia improves the soybean development and modulates soil functional diversity.FEMS microbiology ecology · 2025Article
- Genome mining of Bacillus thuringiensis strain SY49.1 reveals novel candidate pesticidal and bioactive compounds.Pest management science · 2025Article
- Effects of Rhizobacteria Strains on Plant Growth Promotion in Tomatoes (Plants (Basel, Switzerland) · 2024Article
- Selection and Effect of Plant Growth-Promoting Bacteria on Pine Seedlings (Life (Basel, Switzerland) · 2024Article
- Characterization of Plant-Growth-Promoting Rhizobacteria for Tea Plant (Plants (Basel, Switzerland) · 2024Article
- Up-regulation of growth-related gene expression in tobacco by volatile compounds released by Bacillus velezensis WSW007.Scientific reports · 2024Article
- Genotypic and Phenotypic Characterization ofMicroorganisms · 2024Article
- Synergizing biotechnology and natural farming: pioneering agricultural sustainability through innovative interventions.Frontiers in plant science · 2024Review
- Transcriptomic analysis of the response ofFrontiers in microbiology · 2024Article
- Co-inoculation of the endophytesFrontiers in microbiology · 2024Article
- Plant-AssociatedPlants (Basel, Switzerland) · 2023Review
- Mineral Solubilizing Rhizobacterial Strains Mediated Biostimulation of Rhodes Grass Seedlings.Microorganisms · 2023Article
- Isolation and characterization of novel potassium-solubilizing purple nonsulfur bacteria from acidic paddy soils using culture-dependent and culture-independent techniques.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2023Article
- Lysinibacillus spp.: an IAA-producing endospore forming-bacteria that promotes plant growth.Antonie van Leeuwenhoek · 2023Article
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Authors and funding
10 authors at 2 institutions in 3 countries.
Funding
Abstract
Strains of Bacillus thuringiensis (Bt) are commonly commercialized as bioinoculants for insect pest control, but their benefits go beyond their insecticidal property: they can act as plant growth-promoters. Auxins play a major role in the plant growth promotion. However, the mechanism of auxin production by the Bacilli group, and more specifically by Bt strains, is unclear. In previous work, the plant growth-promoting rhizobacterium (PGPR) B. thuringiensis strain RZ2MS9 increased the corn roots. This drew our attention to the strain's auxin production trait, earlier detected in vitro. Here, we demonstrate that in its genome, RZ2MS9 harbours the complete set of genes required in two pathways that are used for Indole acetic acid (IAA) production. We also detected that the strain produces almost five times more IAA during the stationary phase. The bacterial application increased the shoot dry weight of the Micro-Tom (MT) tomato by 24%. The application also modified MT root architecture, with an increase of 26% in the average lateral root length and inhibition of the axial root. At the cellular level, RZ2MS9-treated MT plants presented elongated root cortical cells with intensified mitotic activity. Altogether, these are the best characterized auxin-associated phenotypes. Besides that, no growth alteration was detected in the auxin-insensitive diageotropic (dgt) plants either with or without the RZ2MS9 inoculation. Our results suggest that auxins play an important role in the ability of B. thuringiensis RZ2MS9 to promote MT growth and provide a better understanding of the auxin production mechanism by a Bt strain.
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