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Shodmonova MK, Muhammadova DA, Aytenov IS, Isokulov MZ, Bozorov TA, Zhang D, Abduraimov OS, Murodova SM, Melikuziev FA, Ochilov BO, Meliev SK. Diversity of Antifungal Properties in Bacterial Isolates from Different Plant Species Growing Across Uzbekistan. Microorganisms 2025; 13:1161. [PMID: 40431332 PMCID: PMC12114544 DOI: 10.3390/microorganisms13051161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2025] [Revised: 05/16/2025] [Accepted: 05/16/2025] [Indexed: 05/29/2025] Open
Abstract
Plant-associated bacteria play a crucial role in protecting plants from pathogens, yet the diversity and antagonistic potential of these bacteria across different plant species remain underexplored, especially in central Asia. To investigate the competitive dynamics between phytopathogenic fungi and plant-associated bacteria, we collected stem and root samples from 50 plant species across nine regions of Uzbekistan. A total of 3355 bacterial isolates were obtained (1896 from roots and 1459 from shoots) and screened for antifungal activity against six fungal pathogens, resulting in 432 antagonistic isolates. These were identified through 16S rDNA sequencing, revealing 65 bacterial species across three phyla: Firmicutes, Proteobacteria, and Actinobacteria, predominantly in the respective families Bacillaceae, Pseudomonadaceae, and Caryophanaceae. The plant Salsola vvedenskii hosted the highest diversity of antagonists (26 species), while other species harbored fewer. Plant species showed strong associations with specific bacterial communities, with 14 plant species each hosting unique antagonists. Enzymatic profiling revealed functional diversity, with Bacillus species producing protease, cellulase, and lipase activities, while Pseudomonas species excelled in xylanase, glucanase, and cellobiase production. B. mojavensis 9r-29 stood out by producing all six enzymes. These findings underscore the ecological diversity and biocontrol potential of plant-associated bacteria in natural ecosystems, offering promising candidates for sustainable plant protection strategies.
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Affiliation(s)
- Mukhlisa K. Shodmonova
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Dono A. Muhammadova
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Ilkham S. Aytenov
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Marufbek Z. Isokulov
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Tohir A. Bozorov
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Daoyuan Zhang
- Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Ozodbek S. Abduraimov
- Laboratory of the Cadastre of Natural Plant Resources and Population Biology, Institute of Botany, Uzbek Academy of Sciences, Tashkent 100125, Uzbekistan;
| | - Sojida M. Murodova
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Fazliddin A. Melikuziev
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Bekhruz O. Ochilov
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
| | - Sodir K. Meliev
- Laboratory of Molecular and Biochemical Genetics, Institute of Genetics and Plants Experimental Biology, Uzbek Academy of Sciences, Tashkent Region, Yukori-Yuz, Kibray 111226, Uzbekistan; (M.K.S.); (D.A.M.); (I.S.A.); (M.Z.I.); (S.M.M.); (F.A.M.); (B.O.O.); (S.K.M.)
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Abdelaziz R, Abd El-Hamid MI, El-Wafaei N, Ghaly MF, Askora A, El-Didamony G, AboElmaaty SA, Ismail TA, Ibrahim D, Eissa SA. Phage-resistant Streptomyces abietis and its telomycin bioactive metabolite as a possible alternative to antibiotics. Microb Pathog 2024; 194:106822. [PMID: 39047802 DOI: 10.1016/j.micpath.2024.106822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
Multidrug-resistant pathogens are now thought to be the primary global causes of disease and death. Therefore, it is imperative to develop new effective bioactive compounds from microbial sources, such as Streptomyces species. Nevertheless, the pharmaceutical industry suffered financial losses and low-quality end products as a result of Streptomyces bacteriophage contamination. To reduce the likelihood of phage-induced issues in the medical industry, it is crucial to develop a method for finding phage-resistant strains. Hence, we aimed to isolate and characterize Streptomyces spp. and Streptomyces phages from various rhizospheric soil samples in Egypt and to investigate their antibacterial activities. Moreover, we targeted development of a Streptomyces phage-resistant strain to extract its active metabolites and further testing its antibacterial activity. Herein, the antibacterial activities of the isolated 58 Streptomyces isolates showed that 10 (17.2 %) Streptomyces isolates had antibacterial activities against the tested bacteria including Listeria monocytogenes, E. coli O157, Acinetobacter baumannii, methicillin resistant-vancomycin-intermediate Staphylococcus aureus (MRSA-VISA) and Micrococcus luteus. Three lytic bacteriophages (ϕPRSC1, ϕPRSC2, and ϕPRSC4) belonging to the families Siphoviridae and Podoviridae were obtained from the rhizospheric soil samples using the most potent S. abietis isolate as the host strain. The three isolated Streptomyces phages were thermostable, ultraviolet stable, infectious, and had a wide range of hosts against the 10 tested Streptomyces isolates with antibacterial activities. The DNA of the ϕPRSC1 and ϕPRSC4 phages were resistant to digestion by EcoRI and HindIII, but the DNA of ϕPRSC2 was resistant to digestion by EcoRI and sensitive to digestion by HindIII. Of note, we developed a S. abietis strain resistant to the three isolated phages and its antibacterial activities were twice that of the wild strain. Finally, telomycin was recognized as an antibacterial metabolite extracted from phage-resistant S. abietis strain, which was potent against the tested Gram-positive bacteria including L. monocytogenes, MRSA-VISA, and M. luteus. Thus, our findings open new horizons for researching substitute antimicrobial medications for both existing and reemerging illnesses.
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Affiliation(s)
- Rewan Abdelaziz
- Department of Microbiology, Ain Shams University, Faculty of Science, 11566, Egypt.
| | - Marwa I Abd El-Hamid
- Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, 44511, Egypt.
| | - Nahed El-Wafaei
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, 44511, Egypt.
| | - Mohamed F Ghaly
- Department of Botany and Microbiology, Zagazig University, Faculty of Science, Zagazig, 44519, Egypt.
| | - Ahmed Askora
- Department of Botany and Microbiology, Zagazig University, Faculty of Science, Zagazig, 44519, Egypt.
| | - Gamal El-Didamony
- Department of Botany and Microbiology, Zagazig University, Faculty of Science, Zagazig, 44519, Egypt.
| | - Sabah A AboElmaaty
- Department of Botany and Microbiology, Banha University, Faculty of Science, Banha, 44519, Egypt.
| | - Tamer A Ismail
- Department of Clinical Laboratory Sciences, Turabah University College, Taif University, Taif, 21944, Saudi Arabia.
| | - Doaa Ibrahim
- Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Egypt.
| | - Samar A Eissa
- Department of Medical Microbiology and Immunology, Faculty of Medicine-Kafrelsheikh University, 31511, Egypt.
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