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Uesugi JHE, Dos Santos Caldas D, Coelho BBF, Prazes MCC, Omura LYE, Pismel JAR, Bezerra NV. Morphological diversity of actinobacteria isolated from oil palm compost (Elaeis guineensis). Braz J Microbiol 2024; 55:455-469. [PMID: 38010583 PMCID: PMC10920546 DOI: 10.1007/s42770-023-01178-w] [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: 05/28/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023] Open
Abstract
Composting is a natural process of decomposition of organic matter that occurs by the action of microorganisms such as fungi, bacteria, and actinobacteria. The actinobacteria are present throughout the process due to their resistance to different environmental conditions. They are Gram-positive, filamentous bacteria with a high capacity for producing secondary metabolites of biotechnological importance. Thus, the objective of this work was to isolate and characterize actinobacteria from industrial composting soil of oil palm (Elaeis guineensis) in the municipality of Igarapé-Açu, Pará. Ten samples of the material were collected and seeded on soy tryptone agar, Reasoner's 2A agar, and Columbia agar, using the serial dilution technique. For morphological characterization of the strains, Gram staining and microculture were performed, and for biochemical characterization, the motility, triple sugar iron, Simmons citrate, maltose, phenylalanine, catalase, and DNAse tests were performed. It was observed that compost actinobacteria have a great diversity in morphological and metabolic production, which may be associated with the substrate and cultivation conditions. Therefore, palm oil compost material represents a rich source of bacterial biodiversity, bringing new perspectives for the bioprospecting of actinobacteria of biotechnological importance in little explored environments.
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Affiliation(s)
- Juliana Hiromi Emin Uesugi
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil
| | - Daniel Dos Santos Caldas
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil.
| | - Brunna Beatrys Farias Coelho
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil
| | - Maria Clara Coelho Prazes
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil
| | - Lucas Yukio Emin Omura
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil
| | - José Alyson Rocha Pismel
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil
| | - Nilson Veloso Bezerra
- Laboratory of Applied Microbiology and Genetics of Microorganisms, Pará State University, Tv. Perebebuí, 2623, Marco, Belém, PA, Brazil
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Characteristics changes on Applications of Antibiotics and Current Approaches to Enhance Productivity with Soil Microbiome. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2022. [DOI: 10.22207/jpam.16.1.61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The contamination of environmental sully with antibiotics is regarded as a major problem today and predictable to attain more recognition in near future. However, human intervention resulting in antibiotic consumption is being enhancing all around the world. Our review of literature revealed the role of microbiome in sully and how antibiotic resistant genes raised. The structure of antibiotics basically influenced by natural components such as biotic and abiotic push which shifts based on different soils. Therefore, management of microbiome in soil and their expression studies were distinctively revealed. The assessment of antibiotic resistance genes with help of next generation sequencing provided a clear comprehension on genome and transcriptome of the bacterial genes. Thus, interaction of microbiome with soil can also be well understood. The current findings in our study will guide every researcher to follow logical protocol in analyzing microbiota composition is covered as well and also to understand its metagenomic and sequenced with next-generation sequencer which helps to comprehend the diverse micro-flora present in soil and its operation. Finally, later progresses in bioinformatics computer program, flow of work, and applications for analyzing metagenomic information are put in a nutshell.
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Grigoryan LN, Bataeva YV, Andreeva ED, Zakar’yaeva DK, Turaeva ZO, Antonova SV. Study of the Component Structure of the Metabolites of Bacteria
Nocardiopsis umidischolae in the Search for
Eco-Friendly Plant Protection Agents. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220130010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Marine Actinobacteria Bioflocculant: A Storehouse of Unique Biotechnological Resources for Wastewater Treatment and Other Applications. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10217671] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The bioactive compounds produced by actinobacteria have played a major role in antimicrobials, bioremediation, biofuels, enzymes, and anti-cancer activities. Biodegradable microbial flocculants have been produced by bacteria, algae, and fungi. Microbial bioflocculants have also attracted biotechnology importance over chemical flocculants as a result of degradability and environmentally friendly attributes they possess. Though, freshwater actinobacteria flocculants have been explored in bioflocculation. Yet, there is a paucity of information on the application of actinobacteria flocculants isolated from the marine environment. Similarly, marine habitats that supported the biodiversity of actinobacteria strains in the field of biotechnology have been underexplored in bioflocculation. Hence, this review reiterates the need to optimize culture conditions and other parameters that affect bioflocculant production by using a response surface model or artificial neural network.
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Sapkota A, Thapa A, Budhathoki A, Sainju M, Shrestha P, Aryal S. Isolation, Characterization, and Screening of Antimicrobial-Producing Actinomycetes from Soil Samples. Int J Microbiol 2020; 2020:2716584. [PMID: 32300363 PMCID: PMC7139855 DOI: 10.1155/2020/2716584] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/10/2020] [Indexed: 01/18/2023] Open
Abstract
Actinomycetes are Gram-positive, facultative anaerobic fungus-like filamentous bacteria which remain on the top of the natural antibiotic producers. Due to the climatic and geographical diversity of Nepal, a wide range of microorganisms with potent source of antimicrobials are available. The objective of this study was to isolate, identify, and screen the potential antimicrobial-producing actinomycetes from soils covering different altitude range of Nepal. Forty-one isolates of actinomycetes were isolated from 11 soil samples collected from different locations in Nepal with altitude ranging from 1500 to 4380 meters. The isolates were identified on the basis of morphological study, different sugar utilization, protein utilization, and hydrolysis tests. They were also characterized on the basis of temperature and pH. Primary screening for antimicrobial activity was carried out against several test organisms: Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Klebsiella pneumoniae (ATCC 700603), and Pseudomonas aeruginosa (ATCC 27853) by the perpendicular streaking method, and secondary screening was carried out by the agar well diffusion method using ethyl acetate for solvent extraction. 70.7% of the isolates were identified as Streptomyces spp., 19.5% as Nocardia spp., and 9.5% as Micromonospora spp. 43.34% of actinomycete isolates was found to be potent antimicrobial producers from the primary screening among which 46.34% were effective against Gram-positive and 12.19% against Gram-negative test organisms. Isolate C7 (Micromonospora spp.) showed the best broad-spectrum antimicrobial activity during secondary screening. A total of 11 different types of pigments were observed to be produced by different isolates, of which, the yellow pigment was the most prominent. The association between elevation, pH, and pigment with the antimicrobial production was found to be insignificant. This finding can be of importance for further investigation towards obtaining broad-spectrum antibiotics for therapeutic purpose.
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Affiliation(s)
- Anupama Sapkota
- Department of Microbiology, St. Xavier's College, Maitighar, Kathmandu, Nepal
| | - Aishwarya Thapa
- Department of Microbiology, St. Xavier's College, Maitighar, Kathmandu, Nepal
| | - Anupa Budhathoki
- Department of Microbiology, St. Xavier's College, Maitighar, Kathmandu, Nepal
| | - Muskan Sainju
- Department of Microbiology, St. Xavier's College, Maitighar, Kathmandu, Nepal
| | - Prativa Shrestha
- Department of Microbiology, St. Xavier's College, Maitighar, Kathmandu, Nepal
| | - Sagar Aryal
- Department of Microbiology, St. Xavier's College, Maitighar, Kathmandu, Nepal
- Department of Natural Products, Kathmandu Research Institute for Biological Sciences, Lalitpur, Nepal
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Ouchari L, Boukeskasse A, Bouizgarne B, Ouhdouch Y. Antimicrobial potential of actinomycetes isolated from the unexplored hot Merzouga desert and their taxonomic diversity. Biol Open 2019; 8:bio.035410. [PMID: 30127092 PMCID: PMC6398458 DOI: 10.1242/bio.035410] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The absence of new antibiotics is guiding more and more researchers to specific ecosystems. One hundred and sixty-three Actinobacteria isolates were isolated from Merzouga sand and screened for their antibacterial and antifungal activities. To test the antimicrobial effect of isolates, four microorganisms known as human potential pathogens were used. The electrophoretic profiles of isolates obtained by repetitive element PCR fingerprinting (rep-PCR) were compared by clustering. Results showed that among the tested isolates, 59% were active against one or more in testing Gram-positive, Gram-negative and the yeast Candida albicans The importance of culture media for the activity expression was revealed. Comparative analysis of antimicrobial activity divided isolates into 15 groups. The comparison of the average diameters of inhibition zones using Minitab V.17 allowed subdivision of the 15 groups into 20 subgroups. Dendrograms derived from the BOXA1R-PCR fingerprints showed that 36 isolates were grouped in 16 clusters, containing from two to four isolates while 127 isolates were not grouped. The tested antimicrobial activities showed a high biological diversity with important inhibition of pathogens tested. The rep-PCR revealed a high taxonomic diversity of isolates. The combination of antimicrobial activity and rep-PCR results revealed the diverse pattern of Merzouga sand dune Actinobacteria.
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Affiliation(s)
- Lahcen Ouchari
- Moroccan-Coordinated Collections of Microorganisms (CCMM), National Center for Scientific and Technical Research (CNRST), Rabat 10170, Morocco .,Laboratory of Biology and Biotechnology of Microorganisms, Semlalia Faculty of Sciences, Cadi Ayyad University, Marrakech 10170, Morocco
| | - Amal Boukeskasse
- Laboratory of Biology and Biotechnology of Microorganisms, Semlalia Faculty of Sciences, Cadi Ayyad University, Marrakech 10170, Morocco
| | - Brahim Bouizgarne
- Laboratory, Plant Biotechnology, Plant Phytochemistry and Microbiology Soil Plants, Faculty of Sciences, Ibn Zohr University, Agadir 10170, Morocco
| | - Yedir Ouhdouch
- Laboratory of Biology and Biotechnology of Microorganisms, Semlalia Faculty of Sciences, Cadi Ayyad University, Marrakech 10170, Morocco
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