Continuous production of indole-3-acetic acid by immobilized cells of Arthrobacter agilis
Open accessAbstract
Indole acetic acid (IAA) is a plant growth-promoting hormone used in agriculture; therefore, its continuous production is of paramount importance. IAA-producing eight bacteria were isolated from the rhizosphere of Verbascum vulcanicum. Among them, Arthrobacter agilis A17 gave maximum IAA production (75 mg/L) and this strain was used to immobilization studies. The A. agilis A17 cells were immobilized in calcium alginate for the production of IAA. Optimization of process parameters for IAA production was carried out to enhance IAA production using immobilized cells. The maximal production of IAA was 520 mg/L under the following optimal conditions: 1% mannitol, 30 °C, pH 8.0, and 24 h incubation. It was determined that the immobilized cells could be reused (13 times) for the production of IAA.
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Previous studies have documented a relationship between pH and the production of growth-promoting hormones, such as auxins in plants.
“Previous studies have documented a relationship between pH and the production of growth-promoting hormones, such as auxins in plants.”
From Phosphate solubilization and indole acetic acid production by rhizosphere yeast Torulaspora globosa: improvement of culture conditions for better performance in vitro (2022) · cites this paper as Ozdal et al. 2017
The Results and discussion section, under “Effect of buffer pH on IAA production,” reports that pH affected production of indole-3-acetic acid (IAA), an auxin, by immobilized Arthrobacter cells. The Introduction identifies IAA as important for plant growth, but the pH experiment measured bacterial production, not auxin production in plants. Page numbers are not provided in our copy. (LLM, conf=0.84)
Experimental — accuracy not yet measuredThe production of growth-promoting hormones such as auxins in plants is usually favored under alkaline conditions.
“The production of these hormones is usually favored under alkaline conditions (Mohide 2013; Ozdal et al. 2017).”
From Phosphate solubilization and indole acetic acid production by rhizosphere yeast Torulaspora globosa: improvement of culture conditions for better performance in vitro (2022) · cites this paper as Ozdal et al. 2017
The Results and discussion section (“Effect of buffer pH on IAA production”) reports that immobilized Arthrobacter agilis produced the most IAA at an initial pH of 8.0. But this is bacterial production of one plant-growth hormone, not evidence that hormone production in plants is usually favored by alkaline conditions; the section also reports pH 7 optima for other microbes. (LLM, conf=0.85)
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Cites
Leveau, J. H. J., & Lindow, S. E. (2005) · Applied and Environmental Microbiology · doi:10.1128/aem.71.5.2365-2371.2005 · Cited by 286 · cited 1× · see citing works
“Leveau and Lindow (2005) reported degradation of IAA to catechol by Pseudomonas putida.”
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Research works printed but not linked: 26
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Cited by
Sorted by citations
Albertini, J., Rocha, R. K., Bastos, R. G., Ceccato-Antonini, S. R., & Rosa-Magri, M. M. (2022) · 3 Biotech · doi:10.1007/s13205-022-03322-z · Cited by 5 · see citing works
- Authors
- Ozdal, M., Ozdal, O. G., Sezen, A., Algur, O. F., & Kurbanoglu, E. B.
- Affiliations
- Atatürk University (TR)
- Venue
- 3 Biotech
- Published
- 2017-04-11
- Volume
- 7
- Issue
- 1
- Pages
- 23-23
- ISSN
- 2190-572X (ISSN-L)
- 2190-5738
- PMC
- PMC5388657
- OpenAlex
- W2607296526
- Cited by
- 39
- References
- 1
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 2 · 2023: 4 · 2022: 8 · 2021: 8 · 2020: 4 · 2019: 2 · 2018: 5 · 2017: 2
- FWCI
- 3.50
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- 3 Biotech (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant tissue culture and regeneration
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Keywords
- indole-3-acetic acid, Arthrobacter agilis, cell immobilization, calcium alginate, continuous production, plant growth-promoting hormones, rhizosphere bacteria, mannitol, cell reuse, fermentation optimization
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