Fate of Bacillus thuringiensis in soil: effect of soil pH and organic amendment
Abstract
Bacillus thuringiensis spores germinated, grew, and sporulated in soils of neutral pH amended with alfalfa or casein. Numbers of viable spores of B. thuringiensis increased 100-fold and more than one million spores/g soil were maintained throughout a 3-month incubation period. B. thuringiensis spores apparently germinated but the resulting vegetative cells did not survive in acid soils amended with alfalfa or casein. It appears that B. thuringiensis spores can remain viable for long periods of time in soil and that the organism can compete successfully under conditions favoring the bacillus component of soil microbial populations.
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Earthworms are highly sensitive to soil pH and ammonia concentration.
“Earthworms are highly sensitive to soil pH and ammonia concentration (Saleh et al. 1970).”
From Biochar and its importance on nutrient dynamics in soil and plant (2020) · cites this paper as Saleh et al. 1970
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“thuringiensis indicate that this bacterium was able to compete with the indigenous soil microflora and multiply 100-fold when soil was amended with nutrients such as alfalfa (21, 22), but no information was presented on population increases due to infected hosts.”
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- Authors
- Saleh, S. M., Harris, R. F., & Allen, O. N.
- Venue
- Canadian Journal of Microbiology
- Publisher
- Canadian Science Publishing
- Published
- 1970-08-01
- Volume
- 16
- Issue
- 8
- Pages
- 677-680
- ISSN
- 0008-4166 (ISSN-L)
- 1480-3275
- OpenAlex
- W2059575540
- Cited by
- 48
- References
- 0
- Citations by year
- 2024: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2016: 1 · 2014: 2 · 2013: 3 · 2012: 1
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Canadian Journal of Microbiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Insect Science › Entomopathogenic Microorganisms in Pest Control
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Insect Resistance and Genetics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bacillus and Francisella bacterial research
- Keywords
- Bacillus thuringiensis, soil persistence, spore viability, spore germination, soil pH, organic amendments, alfalfa, casein, acid soils, soil microbial population, biological control
- MeSH terms
- Agar, Medicago sativa, Bacillus, Bacteriological Techniques, Caseins, Hydrogen-Ion Concentration, Soil Microbiology, Spores
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