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Sweeney D, Chase AB, Bogdanov A, Jensen PR. MAR4 Streptomyces: A Unique Resource for Natural Product Discovery. JOURNAL OF NATURAL PRODUCTS 2024; 87:439-452. [PMID: 38353658 PMCID: PMC10897937 DOI: 10.1021/acs.jnatprod.3c01007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 02/24/2024]
Abstract
Marine-derived Streptomyces have long been recognized as a source of novel, pharmaceutically relevant natural products. Among these bacteria, the MAR4 clade within the genus Streptomyces has been identified as metabolically rich, yielding over 93 different compounds to date. MAR4 strains are particularly noteworthy for the production of halogenated hybrid isoprenoid natural products, a relatively rare class of bacterial metabolites that possess a wide range of biological activities. MAR4 genomes are enriched in vanadium haloperoxidase and prenyltransferase genes, thus accounting for the production of these compounds. Functional characterization of the enzymes encoded in MAR4 genomes has advanced our understanding of halogenated, hybrid isoprenoid biosynthesis. Despite the exceptional biosynthetic capabilities of MAR4 bacteria, the large body of research they have stimulated has yet to be compiled. Here we review 35 years of natural product research on MAR4 strains and update the molecular diversity of this unique group of bacteria.
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Affiliation(s)
- Douglas Sweeney
- Scripps
Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Alexander B. Chase
- Department
of Earth Sciences, Southern Methodist University, Dallas, Texas 75275, United States
| | - Alexander Bogdanov
- Scripps
Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Paul R. Jensen
- Scripps
Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
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2
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Kaewkla O, Suriyachadkun C, Franco CMM. Streptomyces phytophilus sp. nov., an endophytic actinobacterium with biosynthesis potential as an antibiotic producer. Int J Syst Evol Microbiol 2023; 73. [PMID: 37093715 DOI: 10.1099/ijsem.0.005834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023] Open
Abstract
An endophytic actinobacterium, strain PIP175T, was isolated from the root sample of a native apricot tree (Pittosporum angustifolium) growing on the Bedford Park campus of Flinders University, Adelaide, South Australia. This strain is a Gram stain-positive, aerobic actinobacterium with well-developed substrate mycelia. Aerial mycelia rarely produce spores and the spore chain is spiral. Strain PIP175T showed the highest 16S rRNA gene sequence similarity to Streptomyces aculeolatus DSM 41644T (99.4 %). Other closely related phylogenetic representatives include Streptomyces synnematoformans DSM 41902T (98.3 %), Streptomyces albospinus NBRC 13846T (97.6 %), Streptomyces cacaoi subsp. cacaoi NRRL B-1220T (97.5 %) and Streptomyces ruber NBRC 14600T (97.4 %). The major cellular fatty acid of this strain was iso-C16 : 0 and the major menaquinone was MK-9(H6). The whole-cell sugar contained galactose, glucose and mannose. Chemotaxonomic data confirmed that strain PIP175T belonged to the genus Streptomyces. Digital DNA-DNA hybridization, average nucleotide identity based on blast and OrthoANIu results between strain PIP175T and S. aculeolatus DSM 41644T were 60.0, 94.1 and 94.9 %, respectively. Genotypic and phenotypic data and genome analysis results allowed the differentiation of strain PIP175T from its closest species with validly published names. Strain PIP175T showed good activity against methicillin-resistant Staphylococcus aureus 03120385. Genome mining of strain PIP175T revealed biosynthetic genes encoding proteins relating to antibiotic production, plant growth promotion and biodegradation enzymes. The name proposed for the new species is Streptomyces phytophilus sp. nov. The type strain is PIP175T (=DSM 103379T=TBRC 6026T).
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Affiliation(s)
- Onuma Kaewkla
- Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham Province, 44150, Thailand
- Department of Medical Biotechnology, College of Medicine and Public Health, Flinders University, Bedford Park, Adelaide, 5042, Australia
| | - Chanwit Suriyachadkun
- Thailand Bioresource Research Center (TBRC), National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Klong Luang, Pathumthani 12120, Thailand
| | - Christopher Milton Mathew Franco
- Department of Medical Biotechnology, College of Medicine and Public Health, Flinders University, Bedford Park, Adelaide, 5042, Australia
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Xie F, Pathom-aree W. Actinobacteria From Desert: Diversity and Biotechnological Applications. Front Microbiol 2021; 12:765531. [PMID: 34956128 PMCID: PMC8696123 DOI: 10.3389/fmicb.2021.765531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 11/08/2021] [Indexed: 12/25/2022] Open
Abstract
Deserts, as an unexplored extreme ecosystem, are known to harbor diverse actinobacteria with biotechnological potential. Both multidrug-resistant (MDR) pathogens and environmental issues have sharply raised the emerging demand for functional actinobacteria. From 2000 to 2021, 129 new species have been continuously reported from 35 deserts worldwide. The two largest numbers are of the members of the genera Streptomyces and Geodermatophilus, followed by other functional extremophilic strains such as alkaliphiles, halotolerant species, thermophiles, and psychrotolerant species. Improved isolation strategies for the recovery of culturable and unculturable desert actinobacteria are crucial for the exploration of their diversity and offer a better understanding of their survival mechanisms under extreme environmental stresses. The main bioprospecting processes involve isolation of target actinobacteria on selective media and incubation and selection of representatives from isolation plates for further investigations. Bioactive compounds obtained from desert actinobacteria are being continuously explored for their biotechnological potential, especially in medicine. To date, there are more than 50 novel compounds discovered from these gifted actinobacteria with potential antimicrobial activities, including anti-MDR pathogens and anti-inflammatory, antivirus, antifungal, antiallergic, antibacterial, antitumor, and cytotoxic activities. A range of plant growth-promoting abilities of the desert actinobacteria inspired great interest in their agricultural potential. In addition, several degradative, oxidative, and other functional enzymes from desert strains can be applied in the industry and the environment. This review aims to provide a comprehensive overview of desert environments as a remarkable source of diverse actinobacteria while such rich diversity offers an underexplored resource for biotechnological exploitations.
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Affiliation(s)
- Feiyang Xie
- Doctor of Philosophy Program in Applied Microbiology (International Program), Faculty of Science, Chiang Mai University, under the CMU Presidential Scholarship, Chiang Mai, Thailand
| | - Wasu Pathom-aree
- Research Center of Microbial Diversity and Sustainable Utilization, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
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Selim S, AbdElgawad H, Alsharari SS, Atif M, Warrad M, Hagagy N, Madany MMY, Abuelsoud W. Soil enrichment with actinomycete mitigates the toxicity of arsenic oxide nanoparticles on wheat and maize growth and metabolism. PHYSIOLOGIA PLANTARUM 2021; 173:978-992. [PMID: 34237152 DOI: 10.1111/ppl.13496] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/09/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
The use of plant growth-promoting bacteria (PGPB) to enhance plant growth and protection against heavy metal toxicity has been extensively studied. However, its potentiality to reduce arsenate toxicity, a threat to plant growth and metabolism, has been hardly investigated. Moreover, the toxic effect of arsenic oxide nanoparticles (As-NPs) on plants and possible mechanisms for its alleviation has not yet been explored. In this study, the impact of the bioactive actinomycete Streptomyces spp. on the growth, physiology and stress-related metabolites, such as sugars and proline, on As-NPs-stressed wheat and maize plants was investigated. Soil amendment with arsenic oxide nanoparticles (As-NPs) induced the uptake and accumulation of As in the plants of both species, resulting in reduced growth and photosynthesis, but less marked in maize than in wheat plants. Under As-NPs-free conditions, Streptomyces spp. treatment markedly improved growth and photosynthesis in wheat only. The application of Streptomyces spp. reduced As accumulation, recovered the As-NPs-induced growth, photosynthesis inhibition, and oxidative damage in plants of both species. Wheat plants specifically accumulated soluble sugars, while both species accumulated proline. Under As-NPs stress, the ornithine pathway of proline biosynthesis was more important in maize than in wheat plants, while the glutamine pathway was dominant in wheat ones. The addition of Streptomyces spp. further induced the accumulation of proline and starch in both plant species. Overall, despite a different response to Streptomyces spp. under nontoxic conditions, the amendment of as-contaminated soil with Streptomyces spp. induced similar metabolic responses in the two tested species, which trigger stress recovery.
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Affiliation(s)
- Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Hamada AbdElgawad
- Faculty of Science, Department of Botany and Microbiology, Beni-Suef University, Beni-Suef, Egypt
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Salam S Alsharari
- Department of Biology, Jouf University, College of Science, Sakaka, Saudi Arabia
| | - Muhammad Atif
- Department of Clinical Laboratory Sciences, Jouf University, College of Applied Medical Sciences, Sakaka, Saudi Arabia
| | - Mona Warrad
- Department of Clinical Laboratory Sciences, Jouf University, College of Applied Medical Sciences at Al-Quriat, Al-Quriat, Saudi Arabia
| | - Nashwa Hagagy
- Department of Biology, University of Jeddah, College of Science and Arts at Khulis, Jeddah, Saudi Arabia
- Faculty of Science, Department of Botany, Suez Canal University, Ismailia, Egypt
| | - Mahmoud M Y Madany
- Faculty of Science, Department of Botany and Microbiology, Cairo University, Giza, Egypt
- Department of Biology, Taibah University, College of Science, Al-Madinah Al-Munawarah, Saudi Arabia
| | - Walid Abuelsoud
- Faculty of Science, Department of Botany and Microbiology, Cairo University, Giza, Egypt
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AbdElgawad H, Abuelsoud W, Madany MMY, Selim S, Zinta G, Mousa ASM, Hozzein WN. Actinomycetes Enrich Soil Rhizosphere and Improve Seed Quality as well as Productivity of Legumes by Boosting Nitrogen Availability and Metabolism. Biomolecules 2020; 10:E1675. [PMID: 33333896 PMCID: PMC7765327 DOI: 10.3390/biom10121675] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/23/2020] [Accepted: 11/23/2020] [Indexed: 12/18/2022] Open
Abstract
The use of actinomycetes for improving soil fertility and plant production is an attractive strategy for developing sustainable agricultural systems due to their effectiveness, eco-friendliness, and low production cost. Out of 17 species isolated from the soil rhizosphere of legume crops, 4 bioactive isolates were selected and their impact on 5 legumes: soybean, kidney bean, chickpea, lentil, and pea were evaluated. According to the morphological and molecular identification, these isolates belong to the genus Streptomyces. Here, we showed that these isolates increased soil nutrients and organic matter content and improved soil microbial populations. At the plant level, soil enrichment with actinomycetes increased photosynthetic reactions and eventually increased legume yield. Actinomycetes also increased nitrogen availability in soil and legume tissue and seeds, which induced the activity of key nitrogen metabolizing enzymes, e.g., glutamine synthetase, glutamate synthase, and nitrate reductase. In addition to increased nitrogen-containing amino acids levels, we also report high sugar, organic acids, and fatty acids as well as antioxidant phenolics, mineral, and vitamins levels in actinomycete treated legume seeds, which in turn improved their seed quality. Overall, this study shed the light on the impact of actinomycetes on enhancing the quality and productivity of legume crops by boosting the bioactive primary and secondary metabolites. Moreover, our findings emphasize the positive role of actinomycetes in improving the soil by enriching its microbial population. Therefore, our data reinforce the usage of actinomycetes as biofertilizers to provide sustainable food production and achieve biosafety.
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Affiliation(s)
- Hamada AbdElgawad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt; (H.A.); (A.S.M.M.)
| | - Walid Abuelsoud
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt; (W.A.); (M.M.Y.M.)
| | - Mahmoud M. Y. Madany
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt; (W.A.); (M.M.Y.M.)
- Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawarah 41411, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka P.O. 2014, Saudi Arabia;
| | - Gaurav Zinta
- Shanghai Center for Plant Stress Biology, Center of Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China;
| | - Ahmed S. M. Mousa
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt; (H.A.); (A.S.M.M.)
| | - Wael N. Hozzein
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt; (H.A.); (A.S.M.M.)
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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6
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Hussain A, Hassan QP, Shouche YS. New approaches for antituberculosis leads from Actinobacteria. Drug Discov Today 2020; 25:2335-2342. [PMID: 33069935 DOI: 10.1016/j.drudis.2020.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 09/11/2020] [Accepted: 10/09/2020] [Indexed: 12/31/2022]
Abstract
Bioactive metabolites derived from the phylum Actinobacteria represent many of the existing antimicrobial drugs. Compared with other bacterial pathogens, direct preliminary screening by diffusion assays is a limiting factor against Mycobacterium tuberculosis (Mtb) and different methodologies have been used to improve the search for new molecules. However, the concern remains that most of the previously discovered molecules replicate by conventional procedures. The combination of multidisciplinary approaches with new technologies could advance the discovery of new leads against Mtb like considering the unexplored Actinobacteria jointly with selective and integrative procedures.
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Affiliation(s)
- Aehtesham Hussain
- National Centre for Microbial Resource (NCMR) - National Centre for Cell Science (NCCS), Pune, Maharashtra 411021, India.
| | - Qazi Parvaiz Hassan
- Microbial Biotechnology Division, CSIR - Indian Institute of Integrative Medicine, Jammu & Kashmir 190005, India
| | - Yogesh S Shouche
- National Centre for Microbial Resource (NCMR) - National Centre for Cell Science (NCCS), Pune, Maharashtra 411021, India
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7
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Sebak M, Saafan AE, AbdelGhani S, Bakeer W, El-Gendy AO, Espriu LC, Duncan K, Edrada-Ebel R. Bioassay- and metabolomics-guided screening of bioactive soil actinomycetes from the ancient city of Ihnasia, Egypt. PLoS One 2019; 14:e0226959. [PMID: 31887193 PMCID: PMC6936774 DOI: 10.1371/journal.pone.0226959] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 12/10/2019] [Indexed: 11/18/2022] Open
Abstract
Literature surveys, taxonomical differences, and bioassay results have been utilized in the discovery of new natural products to aid in Actinomycetes isolate-selection. However, no or less investigation have been done on establishing the differences in metabolomic profiles of the isolated microorganisms. The study aims to utilise bioassay- and metabolomics-guided tools that included dereplication study and multivariate analysis of the NMR and mass spectral data of microbial extracts to assist the selection of isolates for scaling-up the production of antimicrobial natural products. A total of 58 actinomycetes were isolated from different soil samples collected from Ihnasia City, Egypt and screened for their antimicrobial activities against indicator strains that included Bacillus subtilis, Escherichia coli, methicillin-resistant Staphylococcus aureus and Candida albicans. A number of 25 isolates were found to be active against B. subtilis and/or to at least one of the tested indicator strains. Principal component analyses showed chemical uniqueness for four outlying bioactive actinomycetes extracts. In addition, Orthogonal Projections to Latent Structures Discriminant Analysis (OPLS-DA) and dereplication study led us to further select two outlying anti-MRSA active isolates MS.REE.13 and 22 for scale-up work. MS.REE.13 and 22 exhibited zones of inhibition at 19 and 13 mm against MRSA, respectively. A metabolomics-guided approach provided the steer to target the bioactive metabolites (P<0.01) present in a crude extract or fraction even at nanogram levels but it was a challenge that such low-yielding bioactive natural products would be feasible to isolate. Validated to occur only on the active side of OPLS-DA loadings plot, the isolated compounds exhibited medium to weak antibiotic activity with MIC values between 250 and 800 μM. Two new compounds, P_24306 (C10H13N2) and N_12799 (C18H32O3) with MICs of 795 and 432 μM, were afforded from the scale-up of MS.REE. 13 and 22, respectively.
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Affiliation(s)
- Mohamed Sebak
- Strathclyde Institute of Pharmacy and Biomedical Sciences, Faculty of Science, University of Strathclyde, Glasgow, Scotland, United Kingdom
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Menoufia University, Shebin Elkom, Menoufia, Egypt
- * E-mail: (MS); (RE)
| | - Amal E. Saafan
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Menoufia University, Shebin Elkom, Menoufia, Egypt
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Sameh AbdelGhani
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Walid Bakeer
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed O. El-Gendy
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Laia Castaño Espriu
- Strathclyde Institute of Pharmacy and Biomedical Sciences, Faculty of Science, University of Strathclyde, Glasgow, Scotland, United Kingdom
| | - Katherine Duncan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, Faculty of Science, University of Strathclyde, Glasgow, Scotland, United Kingdom
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Sciences, Faculty of Science, University of Strathclyde, Glasgow, Scotland, United Kingdom
- * E-mail: (MS); (RE)
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Ahmad MS, El-Gendy AO, Ahmed RR, Hassan HM, El-Kabbany HM, Merdash AG. Exploring the Antimicrobial and Antitumor Potentials of Streptomyces sp. AGM12-1 Isolated from Egyptian Soil. Front Microbiol 2017; 8:438. [PMID: 28348553 PMCID: PMC5346535 DOI: 10.3389/fmicb.2017.00438] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/03/2017] [Indexed: 12/31/2022] Open
Abstract
The occurrence of extensive antibiotics resistant bacteria increased the demands for mining out new sources of antimicrobial agents. Actinomycetes, especially Streptomyces sp. have grasped considerable attention worldwide due to production of many useful bioactive metabolites. In the present study, a total of 52 actinomycetes were isolated from agricultural soil samples in Beni-Suef, Egypt. All isolates were characterized based on colony morphology, mycelium coloration, and pigment diffusion. They were screened for their capabilities to show antimicrobial activities against different indicator microorganisms, and only 20 isolates have shown significant antimicrobial activities against at least one of the tested indicator microorganisms. The isolate AGM12-1 was active against all tested microorganisms and showed a marked antitumor activity with IC50 3.3 and 1.1 μg/ml against HCT-116 and HepG-2 cell lines respectively. It was genotypically characterized as Streptomyces sp. with the presence of PKS Π biosynthetic gene cluster. Mannitol, ammonium sulfate, pH 7, 2% inoculum size and incubation for 11 days at 30°C were the optimum conditions that used to maximize the production and hence allowed purification of one active antimicrobial compound to homogeneity using high performance liquid chromatography with a molecular mass of m/z 488.05. Nuclear magnetic resonance structural elucidation showed that this compound was a diketopiperazine derivative.
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Affiliation(s)
- Maged S Ahmad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University Beni-Suef, Egypt
| | - Ahmed O El-Gendy
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University Beni-Suef, Egypt
| | - Rasha R Ahmed
- Zoology Department, Faculty of Science, Beni-Suef University Beni-Suef, Egypt
| | - Hossam M Hassan
- Pharmacognosy Department, Faculty of Pharmacy, Beni-Suef University Beni-Suef, Egypt
| | - Hussein M El-Kabbany
- Health Research Department, The National Center for Radiation Research and Technology, Atomic Energy Authority Beni-Suef, Egypt
| | - Ahmed G Merdash
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University Beni-Suef, Egypt
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9
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Huang MJ, Rao MPN, Salam N, Xiao M, Huang HQ, Li WJ. Allostreptomyces psammosilenae gen. nov., sp. nov., an endophytic actinobacterium isolated from the roots of Psammosilene tunicoides and emended description of the family Streptomycetaceae [Waksman and Henrici (1943)AL] emend. Rainey et al. 1997, emend. Kim et al. 2003, emend. Zhi et al. 2009. Int J Syst Evol Microbiol 2017; 67:288-293. [DOI: 10.1099/ijsem.0.001617] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Mei-Juan Huang
- Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
- College of Landscape Architecture, Southwest Forestry University, Kunming 650224, PR China
| | - Manik Prabhu Narsing Rao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Nimaichand Salam
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Min Xiao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Hai-Quan Huang
- College of Landscape Architecture, Southwest Forestry University, Kunming 650224, PR China
| | - Wen-Jun Li
- Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
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10
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Pazhanimurugan R, Radhakrishnan M, Shanmugasundaram T, Gopikrishnan V, Balagurunathan R. Terpenoid bioactive compound from Streptomyces rochei (M32): taxonomy, fermentation and biological activities. World J Microbiol Biotechnol 2016; 32:161. [PMID: 27562595 DOI: 10.1007/s11274-016-2121-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 08/07/2016] [Indexed: 11/29/2022]
Abstract
The present study emphasized the production of biologically active terpenoid compound from Streptomyces rochei M32, which was isolated from Western Ghats ecosystem, South India. The presence of resistant genes like mecA, vanA of Staphylococcus aureus and bla SHV, bla TEM of Pseudomonas aeruginosa was confirmed by molecular studies. The isolated compound from Streptomyces rochei M32 inhibited wide range of standard and clinical drug resistant pathogens and enteric pathogens. The rice bran supplemented basal medium influenced the active compound production on 8th day of fermentation and yielded 1875 mg of crude extract from 10 g of rice bran substrate. Purification and characterization of crude ethyl acetate extract was achieved by preparative thin layer chromatography. The active fraction was identified as terpenoid class compound by chemical screening. Based on the results of spectral studies (NMR, LC-MS, FTIR, etc.), the active compound was tentatively identified as 1, 19-bis (3-hydroxyazetidin-1-yl) nonadeca-5, 14-diene-1, 8, 12, 19-tetraone with molecular weight 462.41 g/mol. Minimum inhibitory concentration value ranges between 7.6 and 31.2 µg/mL against test organisms was observed. The cytotoxicity results on cervical cancer (HeLa) cell line showed IC50 value of 2.034 µg/mL. The corresponding compound is not previously reported from any microbial resources.
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Affiliation(s)
- Raasaiyah Pazhanimurugan
- Actinobacterial Research Laboratory, Department of Microbiology, Periyar University, Periyar Palkalai Nagar, Salem, Tamil Nadu, 636 011, India
| | - Manikkam Radhakrishnan
- Centre for Drug Discovery and Development, Sathyabama University, Jeppiar Nagar, Chennai, Tamil Nadu, 600 119, India
| | - Thangavel Shanmugasundaram
- Actinobacterial Research Laboratory, Department of Microbiology, Periyar University, Periyar Palkalai Nagar, Salem, Tamil Nadu, 636 011, India
| | - Venugopal Gopikrishnan
- Centre for Drug Discovery and Development, Sathyabama University, Jeppiar Nagar, Chennai, Tamil Nadu, 600 119, India
| | - Ramasamy Balagurunathan
- Actinobacterial Research Laboratory, Department of Microbiology, Periyar University, Periyar Palkalai Nagar, Salem, Tamil Nadu, 636 011, India.
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Madhaiyan M, Poonguzhali S, Saravanan VS, Duraipandiyan V, Al-Dhabi NA, Pragatheswari D, Santhanakrishnan P, Kim SJ, Weon HY, Kwon SW. Streptomyces pini sp. nov., an actinomycete isolated from phylloplane of pine (Pinus sylvestris L.) needle-like leaves. Int J Syst Evol Microbiol 2016; 66:4204-4210. [PMID: 27469580 DOI: 10.1099/ijsem.0.001336] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel siderophore-producing actinomycete, designated PL19T, was isolated from the Scots-pine needle-like leaves collected from TNAU campus, Coimbatore, India. The isolate was chemoorganotrophic in nutrition and able to grow at 30 °C, and the optimum pH and NaCl facilitated the growth pH 6-11 and 0-8 % (w/v), respectively. The cells are filamentous and the mycelia formed are basically of wide and intricately branched substrate mycelium from which aerial mycelia arises, later gets differentiated into spores that are warty and arranged spirally. The 16S rRNA gene of strain PL19T was sequenced and was highly similar to the type strains of species of the genus Streptomyces, including Streptomyces barkulensis RC1831T (98.8 % pairwise similarity), Streptomyces fenghuangensis GIMN4.003T (98.2 %), Streptomyces nanhaiensis SCSIO 01248T (98.0 %), Streptomyces radiopugnans R97T (97.9 %), Streptomyces atacamensis C60T (97.8 %) and Streptomyces macrosporus NBRC 14749T (97.2 %), all of which were subjected to taxonomical characterization using a polyphasic approach. The strains showed unique carbon utilization patterns, and it possesses iso-C16 : 0 anteiso-C15 : 0 and anteiso-C17 : 0 as a major cellular fatty acids. The cell-wall was dominated with ll-type diaminopimelic acid, and the menaquinone type was MK-9(H6, H8). These chemotaxonomic evidences placed strain PL19T within the genus Streptomyces. The determination of G+C ratio (69.5 mol%) and DNA-DNA hybridization values (13.4-31.8 % with the phylogenetically related species) helped in further hierarchical classification of strain PL19T. Based on morphological, physiological and chemotaxonomic data as well as DNA-DNA hybridization values, strain PL19T could be distinguished from the evolutionarily closest species currently available. All these collective data show that strain PL19T represents a novel species of the genus Streptomyces, for which the name Streptomyces pini sp. nov. is proposed. The type strain is PL19T (=NRRL B-24728T=ICMP 17783T).
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Affiliation(s)
- Munusamy Madhaiyan
- Temasek Lifesciences Laboratory, National University of Singapore, 1 Research Link, Singapore 117604, Republic of Singapore.,Department of Agricultural Microbiology, Tamilnadu Agricultural University, Coimbatore 641 003, Tamilnadu, India
| | - Selvaraj Poonguzhali
- Department of Agricultural Microbiology, Tamilnadu Agricultural University, Coimbatore 641 003, Tamilnadu, India.,Temasek Lifesciences Laboratory, National University of Singapore, 1 Research Link, Singapore 117604, Republic of Singapore
| | | | - Veeramuthu Duraipandiyan
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box. 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box. 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Dhandapani Pragatheswari
- Department of Agricultural Microbiology, Tamilnadu Agricultural University, Coimbatore 641 003, Tamilnadu, India.,School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - Palani Santhanakrishnan
- Department of Agricultural Microbiology, Tamilnadu Agricultural University, Coimbatore 641 003, Tamilnadu, India
| | - Soo-Jin Kim
- Agricultural Microbiology Division, National Institute of Agricultural Science, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Hang-Yeon Weon
- Agricultural Microbiology Division, National Institute of Agricultural Science, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
| | - Soon-Wo Kwon
- Agricultural Microbiology Division, National Institute of Agricultural Science, Rural Development Administration, Wanju-gun, Jeollabuk-do 55365, Republic of Korea
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Bioactive Potential of Actinomycetes from Less Explored Ecosystems against Mycobacterium tuberculosis and Other Nonmycobacterial Pathogens. INTERNATIONAL SCHOLARLY RESEARCH NOTICES 2014; 2014:812974. [PMID: 27437460 PMCID: PMC4897172 DOI: 10.1155/2014/812974] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 10/20/2014] [Indexed: 11/17/2022]
Abstract
Bioactive potential of actinomycetes isolated from certain less explored Indian ecosystems against Mycobacterium tuberculosis and other nonmycobacterial pathogens was investigated. Actinomycetes were isolated from the soil samples collected from desert, coffee plantation, rubber forest, and hill area and their cultural and micromorphological characteristics were studied. Crude extracts were prepared by agar surface fermentation and tested against M. tuberculosis isolates by luciferase reporter phage (LRP) assay at 100 µg/mL. Activity against nonmycobacterial pathogens was studied by agar plug method. Totally 54 purified cultures of actinomycetes including 43 Streptomyces and 11 non-Streptomyces were isolated. While screening for antitubercular activity, extracts of 39 actinomycetes showed activity against one or more M. tuberculosis isolates whereas 27 isolates exhibited antagonistic activity against nonmycobacterial pathogens. In particular crude extracts from sixteen actinomycete isolates inhibited all the three M. tuberculosis isolates tested. Findings of the present study concluded that less explored ecosystems investigated in this study are the potential resource for bioactive actinomycetes. Further purification and characterization of active molecule from the potential extracts will pave the way for determination of MIC, toxicity, and specificity studies.
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Becerril-Espinosa A, Freel KC, Jensen PR, Soria-Mercado IE. Marine Actinobacteria from the Gulf of California: diversity, abundance and secondary metabolite biosynthetic potential. Antonie van Leeuwenhoek 2012; 103:809-19. [PMID: 23229438 DOI: 10.1007/s10482-012-9863-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 12/01/2012] [Indexed: 12/30/2022]
Abstract
The Gulf of California is a coastal marine ecosystem characterized as having abundant biological resources and a high level of endemism. In this work we report the isolation and characterization of Actinobacteria from different sites in the western Gulf of California. We collected 126 sediment samples and isolated on average 3.1-38.3 Actinobacterial strains from each sample. Phylogenetic analysis of 136 strains identified them as members of the genera Actinomadura, Micromonospora, Nocardiopsis, Nonomuraea, Saccharomonospora, Salinispora, Streptomyces and Verrucosispora. These strains were grouped into 26-56 operational taxonomic units (OTUs) based on 16S rRNA gene sequence identities of 98-100 %. At 98 % sequence identity, three OTUs appear to represent new taxa while nine (35 %) have only been reported from marine environments. Sixty-three strains required seawater for growth. These fell into two OTUs at the 98 % identity level and include one that failed to produce aerial hyphae and was only distantly related (≤95.5 % 16S identity) to any previously cultured Streptomyces sp. Phylogenetic analyses of ketosynthase domains associated with polyketide synthase genes revealed sequences that ranged from 55 to 99 % nucleotide identity to experimentally characterized biosynthetic pathways suggesting that some may be associated with the production of new secondary metabolites. These results indicate that marine sediments from the Gulf of California harbor diverse Actinobacterial taxa with the potential to produce new secondary metabolites.
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Affiliation(s)
- Amayaly Becerril-Espinosa
- Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, km 103 Carretera Tijuana- Ensenada, 22830, Ensenada, Baja California, Mexico
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Carro L, Zúñiga P, de la Calle F, Trujillo ME. Streptomyces pharmamarensis sp. nov. isolated from a marine sediment. Int J Syst Evol Microbiol 2011; 62:1165-1170. [PMID: 21724951 DOI: 10.1099/ijs.0.034066-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive actinobacterium, strain PM267(T), was isolated from a marine sediment sample in the Mediterranean Sea. The novel strain produced extensively branched substrate and aerial hyphae that carried spiral spore chains. Substrate and aerial mycelia were cream-white and white, respectively. Diffusible pigments were not observed. 16S rRNA gene sequence analysis revealed that strain PM267(T) belonged to the genus Streptomyces and shared a gene sequence similarity of 97.1 % with Streptomyces artemisiae YIM 63135(T) and Streptomyces armeniacus JCM 3070(T). Values <97 % were obtained with other sequences representing members of the genus Streptomyces. The cell wall peptidoglycan contained ll-diaminopimelic acid. MK-9(H(8)) was the major menaquinone. The phospholipid pattern included phosphatidylethanolamine as diagnostic lipid (type II). Major fatty acids found were iso- and anteiso- fatty acids. The G+C content of the DNA was 71.2 mol%. The strain was halotolerant and was able to grow in the presence of 9 % (w/v) NaCl (with an optimum of 2 %). On the basis of these results and additional physiological data obtained in the present study, strain PM267(T) represents a novel species within the genus Streptomyces for which the name Streptomyces pharmamarensis sp. nov. is proposed (type strain PM267(T) = CECT 7841(T) = DSM 42032(T)).
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Affiliation(s)
- Lorena Carro
- Departamento de Microbiología y Genética, Edificio Departamental, Lab. 205, Campus Miguel de Unamuno, Universidad de Salamanca, Salamanca, Spain
| | - Paz Zúñiga
- PharmaMar, Avenida de los Reyes 1, 28770 Colmenar, Madrid, Spain
| | | | - Martha E Trujillo
- Departamento de Microbiología y Genética, Edificio Departamental, Lab. 205, Campus Miguel de Unamuno, Universidad de Salamanca, Salamanca, Spain
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Gallagher KA, Fenical W, Jensen PR. Hybrid isoprenoid secondary metabolite production in terrestrial and marine actinomycetes. Curr Opin Biotechnol 2010; 21:794-800. [PMID: 20951024 DOI: 10.1016/j.copbio.2010.09.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2010] [Accepted: 09/16/2010] [Indexed: 01/06/2023]
Abstract
Terpenoids are among the most ubiquitous and diverse secondary metabolites observed in nature. Although actinomycete bacteria are one of the primary sources of microbially derived secondary metabolites, they rarely produce compounds in this biosynthetic class. The terpenoid secondary metabolites that have been discovered from actinomycetes are often in the form of biosynthetic hybrids called hybrid isoprenoids (HIs). HIs include significant structural diversity and biological activity and thus are important targets for natural product discovery. Recent screening of marine actinomycetes has led to the discovery of a new lineage that is enriched in the production of biologically active HI secondary metabolites. These strains represent a promising resource for natural product discovery and provide unique opportunities to study the evolutionary history and ecological functions of an unusual group of secondary metabolites.
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Affiliation(s)
- Kelley A Gallagher
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0204, USA
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