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Isolation and characterization of endophytic Streptomyces strains from surface-sterilized tomato (Lycopersicon esculentum) roots
Abstract
AIMS: To isolate endophytic Streptomyces strains from tomato and examine their antimicrobial activity. METHODS: Endophytic Streptomyces strains were isolated using surface-sterilization methods and identified by morphological characteristics. Antimicrobial activities were measured by the agar plate sensitivity method. Antifungal activity in vivo was measured by seedling mortality in infested soils. RESULTS: Twenty-one per cent of endophytic streptomycete isolates produced antibacterial metabolites and 41% produced antifungal metabolites in S medium. Sixty-five per cent of the most frequently isolated strains inhibited the growth of Rhizoctonia solani by the antibiosis assay but only 32% produced metabolites active against R. solani in S medium. Growth promotion and enhanced disease resistance of seedlings inoculated with Streptomyces sp. strain S30 were observed in tomato but not in cucumber seedlings. CONCLUSIONS: Endophytic Streptomyces spp. strains were successfully isolated using stringent methods and strain S30 promoted growth and enhanced resistance to R. solani in tomato seedlings. SIGNIFICANCE AND IMPACT OF THE STUDY: Endophytic streptomycetes showing antifungal activity in vitro and in vivo may indicate the potential for their use as biocontrol agents particularly of R. solani disease of tomato seedlings.
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Cited by
Qin, S., Xing, K., Jiang, J.-H., Xu, L.-H., & Li, W.-J. (2011) · Applied Microbiology and Biotechnology · doi:10.1007/s00253-010-2923-6 · Cited by 398
Cao, L., Qiu, Z., You, J., Tan, H., & Zhou, S. (2005) · FEMS Microbiology Letters · doi:10.1016/j.femsle.2005.05.006 · Cited by 277
Self-citationKunova, A., Bonaldi, M., Saracchi, M., Pizzatti, C., Chen, X., & Cortesi, P. (2016) · BMC Microbiology · doi:10.1186/s12866-016-0886-1 · Cited by 118
Metadata
- Authors
- Cao, L., Qiu, Z., You, J., Tan, H., & Zhou, S.
- Venue
- Letters in Applied Microbiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2004-11
- Volume
- 39
- Issue
- 5
- Pages
- 425-430
- ISSN
- 0266-8254 (ISSN-L)
- 1365-2673
- OpenAlex
- W2079020194
- Cited by
- 177
- References
- 0
- FWCI
- 3.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Isolation and characterization of endophytic Streptomyces strains from surface-sterilized tomato (Lycopersicon esculentum) roots. https://app.cochat.ai/papers/10.1111/j.1472-765x.2004.01606.x
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- Cao, L., Qiu, Z., You, J., Tan, H., & Zhou, S. (2004). Isolation and characterization of endophytic Streptomyces strains from surface-sterilized tomato (Lycopersicon esculentum) roots. Letters in Applied Microbiology. https://doi.org/10.1111/j.1472-765x.2004.01606.x
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