ArticleBMC plant biology2025
Phosphate solubilizing bacteria isolated from greenhouse ornamentals improve health and promote growth in French marigold 'Durango Yellow' grown in soilless substrate under phosphate limiting conditions.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Calcium phosphate-solubilizing bacteria promote growth and alleviate phosphorus deficiency in French marigold with minimal impact on the rhizosphere microbiome.Environmental microbiome · 2026Article
- Fertilization influences the substrate, rhizosphere, and endosphere bacteriome ofFrontiers in microbiology · 2025Article
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Authors and funding
6 authors.
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Abstract
backgroundPhosphate solubilizing bacteria (PSB) can break down insoluble forms of phosphorus such as Ca
resultsA bromophenol blue (pH indicator) based colorimetric assay was used to identify bacterial isolates that acidified the culture media. From the collection of 1044 bacteria, 35 isolates that reduced media pH were identified, and their phosphate solubilization capacity was quantified. The top 14 PSB were selected for whole-genome sequencing. The isolates belonged to genera Enterobacter (8), Pantoea (5), and Raoultella (1). In planta effects of strains C2B11 and C8D10 were evaluated in French marigolds (Tagetes patula) grown in a peat-based substrate (pH = 7). Phosphorus was supplemented weekly as insoluble Ca
conclusionsBromophenol blue proved useful to identify bacteria that reduced culture media pH, but not all identified isolates showed high phosphate solubilization. Pantoea formicae C8D10 and Pantoea trifolii C2B11 strains improved growth or health of marigolds grown in soilless substrate under phosphate limiting conditions. We showed the applicability of bromophenol blue for high-throughput PSB identification. C8D10 and C2B11 are phosphate solubilizing bacteria native to soilless substrate systems, and both strains have potential for use as biostimulants to support phosphorus management in ornamental greenhouse production.
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