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Pinto-Almeida A, Bauermeister A, Luppino L, Grilo IR, Oliveira J, Sousa JR, Petras D, Rodrigues CF, Prieto-Davó A, Tasdemir D, Sobral RG, Gaudêncio SP. The Diversity, Metabolomics Profiling, and the Pharmacological Potential of Actinomycetes Isolated from the Estremadura Spur Pockmarks (Portugal). Mar Drugs 2021; 20:21. [PMID: 35049876 PMCID: PMC8780274 DOI: 10.3390/md20010021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/05/2021] [Accepted: 12/14/2021] [Indexed: 01/24/2023] Open
Abstract
The Estremadura Spur pockmarks are a unique and unexplored ecosystem located in the North Atlantic, off the coast of Portugal. A total of 85 marine-derived actinomycetes were isolated and cultured from sediments collected from this ecosystem at a depth of 200 to 350 m. Nine genera, Streptomyces, Micromonospora, Saccharopolyspora, Actinomadura, Actinopolymorpha, Nocardiopsis, Saccharomonospora, Stackebrandtia, and Verrucosispora were identified by 16S rRNA gene sequencing analyses, from which the first two were the most predominant. Non-targeted LC-MS/MS, in combination with molecular networking, revealed high metabolite diversity, including several known metabolites, such as surugamide, antimycin, etamycin, physostigmine, desferrioxamine, ikarugamycin, piericidine, and rakicidin derivatives, as well as numerous unidentified metabolites. Taxonomy was the strongest parameter influencing the metabolite production, highlighting the different biosynthetic potentials of phylogenetically related actinomycetes; the majority of the chemical classes can be used as chemotaxonomic markers, as the metabolite distribution was mostly genera-specific. The EtOAc extracts of the actinomycete isolates demonstrated antimicrobial and antioxidant activity. Altogether, this study demonstrates that the Estremadura Spur is a source of actinomycetes with potential applications for biotechnology. It highlights the importance of investigating actinomycetes from unique ecosystems, such as pockmarks, as the metabolite production reflects their adaptation to this habitat.
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Affiliation(s)
- António Pinto-Almeida
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
- Instituto de Engenharias e Ciências do Mar, Universidade Técnica do Atlântico, 163 Ribeira de Julião, 163 Mindelo, Cape Verde
| | - Anelize Bauermeister
- Skaggs School of Pharmacy & Pharmaceutical Science, University of California San Diego, La Jolla, CA 92093-075, USA;
| | - Luca Luppino
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
- Dipartimento di Scienze Della Vita, Università Degli Studi di Modena e Reggio Emilia, 41125 Modena, Italy
| | - Inês R. Grilo
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Juliana Oliveira
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Joana R. Sousa
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Daniel Petras
- CMFI Cluster of Excellence, Interfaculty Institute of Microbiology and Medicine, University of Tuebingen, Auf der Morgenstelle 24, 72076 Tuebingen, Germany;
| | - Clara F. Rodrigues
- CESAM—Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Alejandra Prieto-Davó
- Unidad de Química-Sisal, Facultad de Química, Universidad Nacional Autónoma de México, Sisal 97356, Mexico;
| | - Deniz Tasdemir
- GEOMAR Centre for Marine Biotechnology, Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, 24106 Kiel, Germany;
- Faculty of Mathematics and Natural Sciences, Kiel University, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Rita G. Sobral
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Susana P. Gaudêncio
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, 2819-516 Caparica, Portugal; (A.P.-A.); (L.L.); (I.R.G.); (J.O.); (J.R.S.); (R.G.S.)
- UCIBIO—Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
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Comprehensive Review of Endophytic Flora from African Medicinal Plants. Curr Microbiol 2021; 78:2860-2898. [PMID: 34184112 DOI: 10.1007/s00284-021-02566-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 06/04/2021] [Indexed: 12/15/2022]
Abstract
Many people in different African countries are suffering from different diseases many of which result in serious life threat and public health problems with high risk of infection and mortality. Due to less accessibility and high cost of modern drugs, people of this continent often depend on traditional medicine using medicinal plants to manage the diseases. Africa has large tropical rain forests, which are very rich in medicinal plants. Many of them have been scientifically proven for their medicinal values. These medicinal plants which constitute a large repertoire of endophytes have not been significantly explored for the isolation of these microorganisms and their bioactive secondary metabolites. This review summarizes the research on endophytes isolated from medicinal plants of Africa, their pharmacological potential and some of their biotechnological aspects. Novel compounds reported from endophytes from Africa with their biological activities have also been reviewed. Information documented in this review might serve as starting point for future researches on endophytes in different African countries.
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Endophytic microbes: biodiversity, plant growth-promoting mechanisms and potential applications for agricultural sustainability. Antonie van Leeuwenhoek 2020; 113:1075-1107. [PMID: 32488494 DOI: 10.1007/s10482-020-01429-y] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/22/2020] [Indexed: 10/24/2022]
Abstract
Endophytic microbes are known to live asymptomatically inside their host throughout different stages of their life cycle and play crucial roles in the growth, development, fitness, and diversification of plants. The plant-endophyte association ranges from mutualism to pathogenicity. These microbes help the host to combat a diverse array of biotic and abiotic stressful conditions. Endophytic microbes play a major role in the growth promotion of their host by solubilizing of macronutrients such as phosphorous, potassium, and zinc; fixing of atmospheric nitrogen, synthesizing of phytohormones, siderophores, hydrogen cyanide, ammonia, and act as a biocontrol agent against wide array of phytopathogens. Endophytic microbes are beneficial to plants by directly promoting their growth or indirectly by inhibiting the growth of phytopathogens. Over a long period of co-evolution, endophytic microbes have attained the mechanism of synthesis of various hydrolytic enzymes such as pectinase, xylanases, cellulase, and proteinase which help in the penetration of endophytic microbes into tissues of plants. The effective usage of endophytic microbes in the form of bioinoculants reduce the usage of chemical fertilizers. Endophytic microbes belong to different phyla such as Actinobacteria, Acidobacteria, Bacteroidetes, Deinococcus-thermus, Firmicutes, Proteobacteria, and Verrucomicrobia. The most predominant and studied endophytic bacteria belonged to Proteobacteria followed by Firmicutes and then by Actinobacteria. The most dominant among reported genera in most of the leguminous and non-leguminous plants are Bacillus, Pseudomonas, Fusarium, Burkholderia, Rhizobium, and Klebsiella. In future, endophytic microbes have a wide range of potential for maintaining health of plant as well as environmental conditions for agricultural sustainability. The present review is focused on endophytic microbes, their diversity in leguminous as well as non-leguminous crops, biotechnological applications, and ability to promote the growth of plant for agro-environmental sustainability.
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Carro L, Razmilic V, Nouioui I, Richardson L, Pan C, Golinska P, Asenjo JA, Bull AT, Klenk HP, Goodfellow M. Hunting for cultivable Micromonospora strains in soils of the Atacama Desert. Antonie van Leeuwenhoek 2018; 111:1375-1387. [PMID: 29480426 DOI: 10.1007/s10482-018-1049-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/16/2018] [Indexed: 02/01/2023]
Abstract
Innovative procedures were used to selectively isolate small numbers of Micromonospora strains from extreme hyper-arid and high altitude Atacama Desert soils. Micromonosporae were recognised on isolation plates by their ability to produce filamentous microcolonies that were strongly attached to the agar. Most of the isolates formed characteristic orange colonies that lacked aerial hyphae and turned black on spore formation, whereas those from the high altitude soil were dry, blue-green and covered by white aerial hyphae. The isolates were assigned to seven multi- and eleven single-membered groups based on BOX-PCR profiles. Representatives of the groups were assigned to either multi-membered clades that also contained marker strains or formed distinct phyletic lines in the Micromonospora 16S rRNA gene tree; many of the isolates were considered to be putatively novel species of Micromonospora. Most of the isolates from the high altitude soils showed activity against wild type strains of Bacillus subtilis and Pseudomonas fluorescens while those from the rhizosphere of Parastrephia quadrangulares and from the Lomas Bayas hyper-arid soil showed resistance to UV radiation.
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Affiliation(s)
- Lorena Carro
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK.
| | - Valeria Razmilic
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK.,Department of Chemical Engineering and Biotechnology, Centre for Biotechnology and Bioengineering (CeBiB), Universidad de Chile, Beauchef 850, Santiago, Chile
| | - Imen Nouioui
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Lee Richardson
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Che Pan
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Patrycja Golinska
- Department of Microbiology, Nicolaus Copernicus University, Torun, Poland
| | - Juan A Asenjo
- Department of Chemical Engineering and Biotechnology, Centre for Biotechnology and Bioengineering (CeBiB), Universidad de Chile, Beauchef 850, Santiago, Chile
| | - Alan T Bull
- School of Biosciences, University of Kent, Canterbury, Kent, CT2 7NJ, UK
| | - Hans-Peter Klenk
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Michael Goodfellow
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, UK
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Abstract
A novel actinobacterium, designated strain UDF-1T, was isolated from forest soil in Chungnam, South Korea, and its taxonomic position was investigated using a polyphasic approach. Strain UDF-1T formed a branched brownish-orange substrate mycelium with spherical or oval spores. No aerial mycelium was formed. Comparative 16S rRNA gene sequence analysis indicated that strain UDF-1T belongs to the genus Micromonospora, showing the highest sequence similarity to Micromonospora palomenae NEAU-CX1T (99.2 % 16S rRNA gene sequence similarity), 'Micromonospora maoerensis' NEAU-MES19 (99.0 %), Micromonospora endolithica DSM 44398T (98.8 %) and Micromonospora matsumotoense IMSNU 22003T (98.8 %). The predominant menaquinones of strain UDF-1T were MK-10 (H4) and MK-10 (H6). The cell wall contained meso-diaminopimelic acid and the whole-cell sugars were arabinose and xylose. The major polar lipids were phosphatidylinositol, diphosphatidylglycerol and phosphatidylethanolamine. The major cellular fatty acids were iso-C16 : 0, anteiso-C15 : 0 and iso-C15 : 0. The genomic DNA G+C content was 73.1 mol%. DNA-DNA relatedness between strain UDF-1T and closely related type strains in the genus Micromonospora was below 30 %. On the basis of the polyphasic analysis conducted in this study, strain UDF-1T represents a novel species of the genus Micromonospora, for which the name Micromonospora fulva sp. nov. is proposed. The type strain is UDF-1T (=KACC 18696T=NBRC 111826T).
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Affiliation(s)
- Hyo-Jin Lee
- Institute of Microbial Ecology & Resources, Mokwon University, Daejeon 302-729, Republic of Korea
| | - Kyung-Sook Whang
- Department of Microbial & Nano Materials, Mokwon University, Daejeon 302-729, Republic of Korea
- Institute of Microbial Ecology & Resources, Mokwon University, Daejeon 302-729, Republic of Korea
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Dinesh R, Srinivasan V, T E S, Anandaraj M, Srambikkal H. Endophytic actinobacteria: Diversity, secondary metabolism and mechanisms to unsilence biosynthetic gene clusters. Crit Rev Microbiol 2017; 43:546-566. [PMID: 28358596 DOI: 10.1080/1040841x.2016.1270895] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Endophytic actinobacteria, which reside in the inner tissues of host plants, are gaining serious attention due to their capacity to produce a plethora of secondary metabolites (e.g. antibiotics) possessing a wide variety of biological activity with diverse functions. This review encompasses the recent reports on endophytic actinobacterial species diversity, in planta habitats and mechanisms underlying their mode of entry into plants. Besides, their metabolic potential, novel bioactive compounds they produce and mechanisms to unravel their hidden metabolic repertoire by activation of cryptic or silent biosynthetic gene clusters (BGCs) for eliciting novel secondary metabolite production are discussed. The study also reviews the classical conservative techniques (chemical/biological/physical elicitation, co-culturing) as well as modern microbiology tools (e.g. next generation sequencing) that are being gainfully employed to uncover the vast hidden scaffolds for novel secondary metabolites produced by these endophytes, which would subsequently herald a revolution in drug engineering. The potential role of these endophytes in the agro-environment as promising biological candidates for inhibition of phytopathogens and the way forward to thoroughly exploit this unique microbial community by inducing expression of cryptic BGCs for encoding unseen products with novel therapeutic properties are also discussed.
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Affiliation(s)
- Raghavan Dinesh
- a ICAR-Indian Institute of Spices Research , Kozhikode, Kerala , India
| | | | - Sheeja T E
- a ICAR-Indian Institute of Spices Research , Kozhikode, Kerala , India
| | | | - Hamza Srambikkal
- a ICAR-Indian Institute of Spices Research , Kozhikode, Kerala , India
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Kaewkla O, Thamchaipinet A, Franco CMM. Micromonospora terminaliae sp. nov., an endophytic actinobacterium isolated from the surface-sterilized stem of the medicinal plant Terminalia mucronata. Int J Syst Evol Microbiol 2017; 67:225-230. [PMID: 28230521 DOI: 10.1099/ijsem.0.001600] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An endophytic actinobacterium, strain TMS7T, was isolated from the stem of a Thai medicinal plant collected from the grounds of the Phujong-Nayoa National park, Ubon Ratchathani province, Thailand. As a result of a polyphasic taxonomy study, this strain was identified as a member of the genus Micromonospora. This strain was a Gram-stain-positive, aerobic actinobacterium with well-developed substrate mycelium with hyphae forming a single microspore was non-motile. Stran TMS7T was identified according to its 16S rRNA gene sequence as a new member of the genus Micromonospora. The closest phylogenetic members sharing a similarity were Micromonospora chersina DSM 44151T at 99.4 % and Micromonospora rosaria DSM 803T, Micromonospora tulbaghiae TVU1T, Micromonospora inositola DSM 43819T and Micromonospora endolithica DSM 44398T all at 99.2 %. Chemotaxonomic data including cell wall components, major menaquinones and major fatty acids confirmed the affiliation of strain TMS7T to the genus Micromonospora. The results of the phylogenetic analysis, addition to physiological and biochemical studies in combination with DNA-DNA hybridization, allowed the genotypic and phenotypic differentiation of strain TMS7T and the most closely related species with validly published names. The name proposed for the novel species is Micromonospora terminaliae sp. nov. The type strain is TMS7T (=DSM 101760T=NRRL B-65345T).
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Affiliation(s)
- Onuma Kaewkla
- Department of Medical Biotechnology, School of Medicine, Flinders University, Bedford Park, SA 5042, Australia.,Department of Biology, Faculty of Science, Mahasarakham University, Maha Sarakham Province 44150, Thailand
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Zhao S, Liu C, Zheng W, Ma Z, Cao T, Zhao J, Yan K, Xiang W, Wang X. Micromonospora parathelypteridis sp. nov., an endophytic actinomycete with antifungal activity isolated from the root of Parathelypteris beddomei (Bak.) Ching. Int J Syst Evol Microbiol 2017; 67:268-274. [PMID: 27902235 DOI: 10.1099/ijsem.0.001614] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel endophytic actinomycete with antifungal activity, designated strain NEAU-JXY5T, was isolated from the root of Parathelypteris beddomei (Bak.) Ching. Strain NEAU-JXY5T showed closest 16S rRNA gene sequence similarity to Micromonospora luteifusca GUI2T (99.31 %), and phylogenetically clustered with Micromonospora noduli GUI43T (99.24 %), 'Micromonospora lycii' NEAU-gq11 (99.19 %), 'Micromonospora zeae' NEAU-gq9 (99.12 %), Micromonospora saelicesensis Lupac 09T (98.97 %), Micromonospora vinacea GUI63T (98.96 %), 'Micromonospora jinlongensis' NEAU-GRX11 (98.91 %), Micromonospora profundi DS3010T (98.77 %), Micromonospora zamorensis CR38T (98.76 %), Micromonospora chokoriensis 2-19(6)T (98.71 %), Micromonospora lupini Lupac 14NT (98.69 %), Micromonospora ureilytica GUI23T (98.69 %), Micromonospora violae NEAU-zh8T (98.57 %) and Micromonospora taraxaci NEAU-P5T (98.37 %). Phylogenetic analysis based on gyrB gene sequences also indicated that the isolate clustered with the above strains except M. violae NEAU-zh8T. A combination of DNA-DNA hybridization results and some phenotypic characteristics indicated that the strain could be readily distinguished from these closest phylogenetic relatives. Therefore, it is concluded that strain NEAU-JXY5T represents a novel species of the genus Micromonospora, for which the name Micromonospora parathelypteridis sp. nov. is proposed. The type strain is NEAU-JXY5T (=CGMCC 4.7347T=DSM 103125T).
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Affiliation(s)
- Shanshan Zhao
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Chongxi Liu
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Weiwei Zheng
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Zhaoxu Ma
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Tingting Cao
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Junwei Zhao
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Kai Yan
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Wensheng Xiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, PR China.,Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
| | - Xiangjing Wang
- Key Laboratory of Agriculture Biological Functional Gene of Heilongjiang Provincial Education Committee, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin 150030, PR China
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Carro L, Riesco R, Spröer C, Trujillo ME. Micromonospora ureilytica sp. nov., Micromonospora noduli sp. nov. and Micromonospora vinacea sp. nov., isolated from Pisum sativum nodules. Int J Syst Evol Microbiol 2016; 66:3509-3514. [PMID: 27282917 DOI: 10.1099/ijsem.0.001231] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
A diversity study on the presence of strains representing the genus Micromonospora in Pisum sativum nodules collected from Cañizal (Spain) has provided evidence of the high number of isolates that might represent novel species. In the present work, we have characterized three of these isolates: GUI23T, GUI43T and GUI63T. Phenotypic and genotypic analyses confirmed that all strains represent novel species of the genus Micromonospora with the following proposed names: Micromonospora ureilytica sp. nov., type strain GUI23T (=CECT 9022T=DSM 101692T), Micromonospora noduli sp. nov., type strain GUI43T (=CECT 9020T=DSM 101694T), and Micromonospora vinacea sp. nov., type strain GUI63T (=CECT 9019T=DSM 101695T).
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Affiliation(s)
- Lorena Carro
- Departamento de Microbiología y Genética, Edificio Departamental, Lab. 214, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
- School of Biology, Devonshire building, Newcastle University, NE1 7RU Newcastle upon Tyne, UK
| | - Raúl Riesco
- Departamento de Microbiología y Genética, Edificio Departamental, Lab. 214, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
| | - Cathrin Spröer
- Leibniz-Institute, DSMZ - Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7B, 38124 Braunschweig, Germany
| | - Martha E Trujillo
- Departamento de Microbiología y Genética, Edificio Departamental, Lab. 214, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
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10
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Veyisoglu A, Carro L, Cetin D, Guven K, Spröer C, Pötter G, Klenk HP, Sahin N, Goodfellow M. Micromonospora profundi sp. nov., isolated from deep marine sediment. Int J Syst Evol Microbiol 2016; 66:4735-4743. [PMID: 27515497 DOI: 10.1099/ijsem.0.001419] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel actinobacterial strain, designated DS3010T, was isolated from a Black Sea marine sediment and characterized using a polyphasic approach. The strain was shown to have chemotaxonomic, morphological and phylogenetic properties consistent with classification as representing a member of the genus Micromonospora. Comparative 16S rRNA gene sequence studies showed that the strain was most closely related to the type strains of Micromonospora saelicesensis (99.5 %), Micromonospora chokoriensis (99.4 %) and Micromonospora violae (99.3 %). Similarly, a corresponding analysis based on partial gyrB gene sequences showed that it formed a distinct phyletic branch in a subclade that included the type strains of Micromonosporazamorensis, 'Micromonospora zeae', 'Micromonospora jinlongensis', M. saelicesensis and Micromonospora lupini. DS3010T was distinguished from its closest phylogenetic neighbours by low levels of DNA-DNA relatedness and by a combination of chemotaxonomic and phenotypic properties. On the basis of these data, it is proposed that the isolate should be assigned to the genus Micromonospora as Micromonospora profundi sp. nov. with isolate DS3010T (=DSM 45981T=KCTC 29243T) as the type strain.
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Affiliation(s)
- Aysel Veyisoglu
- Department of Bioengineering, Faculty of Engineering and Architecture, Sinop University, Nasuhbasoglu-Sinop 57000, Turkey
| | - Lorena Carro
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne, NE1 7RU, UK
| | - Demet Cetin
- Science Teaching Programme, Gazi Faculty of Education, Gazi University, Ankara, Turkey
| | - Kiymet Guven
- Anadolu University, Faculty of Science, Biology Department, Eskisehir 26470, Turkey
| | - Cathrin Spröer
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, Braunschweig 38124, Germany
| | - Gabriele Pötter
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, Braunschweig 38124, Germany
| | - Hans-Peter Klenk
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne, NE1 7RU, UK
| | - Nevzat Sahin
- Department of Biology, Faculty of Art and Science, Ondokuz Mayis University, Kurupelit-Samsun 55139, Turkey
| | - Michael Goodfellow
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne, NE1 7RU, UK
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11
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Carro L, Riesco R, Spröer C, Trujillo ME. Micromonospora luteifusca sp. nov. isolated from cultivated Pisum sativum. Syst Appl Microbiol 2016; 39:237-242. [PMID: 27220477 DOI: 10.1016/j.syapm.2016.04.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 04/22/2016] [Accepted: 04/25/2016] [Indexed: 10/21/2022]
Abstract
Three novel actinobacterial strains, GUI2(T), GUI42 and CR21 isolated from nodular tissues and the rhizosphere of a sweet pea plant collected in Cañizal, Spain were identified according to their 16S rRNA gene sequences as new members of the genus Micromonospora. The closest phylogenetic members were found to be Micromonospora saelicesensis (99.2%) "Micromonospora zeae" (99.1%), "Micromonospora jinlongensis" (99%), Micromonospora lupini (98.9%) and Micromonospora zamorensis (98.8%). To resolve their full taxonomic position, four additional genes (atpD, gyrB, recA, rpoB) were partially sequenced and compared to available Micromonospora type strain sequences. DNA-DNA hybridization, BOX-PCR and ARDRA profiles confirmed that these strains represent a novel genomic species. All strains contained meso-diaminopimelic and hydroxy-diaminopimelic acids in their cell wall. Their fatty acid profiles comprised iso-C15:0, iso-C16:0 and anteiso-C15:0 as major components. The polar lipids diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol were found in the type strain GUI2(T) which also contained MK-10(H4) as the major menaquinone. Physiological and biochemical characteristics also differentiated the new isolates. Based on the integration of the above studies, strains GUI2(T), GUI42 and CR21 represent a novel Micromonospora species and we propose the name Micromonospora luteifusca sp. nov. The type strain is GUI2(T) (=CECT 8846(T); =DSM 100204(T)).
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Affiliation(s)
- Lorena Carro
- Departamento de Microbiología y Genética, Edificio Departamental, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
| | - Raúl Riesco
- Departamento de Microbiología y Genética, Edificio Departamental, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain
| | - Cathrin Spröer
- Leibniz-Insitut DSMZ - Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Martha E Trujillo
- Departamento de Microbiología y Genética, Edificio Departamental, Campus Miguel de Unamuno, Universidad de Salamanca, 37007 Salamanca, Spain.
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Zhao J, Guo L, Liu C, Zhang Y, Guan X, Li J, Xu S, Xiang W, Wang X. Micromonospora lycii sp. nov., a novel endophytic actinomycete isolated from wolfberry root (Lycium chinense Mill). J Antibiot (Tokyo) 2015; 69:153-8. [DOI: 10.1038/ja.2015.109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/21/2015] [Accepted: 09/29/2015] [Indexed: 01/02/2023]
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Masand M, Jose PA, Menghani E, Jebakumar SRD. Continuing hunt for endophytic actinomycetes as a source of novel biologically active metabolites. World J Microbiol Biotechnol 2015; 31:1863-75. [PMID: 26410426 DOI: 10.1007/s11274-015-1950-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 09/15/2015] [Indexed: 10/23/2022]
Abstract
Drug-resistant pathogens and persistent agrochemicals mount the detrimental threats against human health and welfare. Exploitation of beneficial microorganisms and their metabolic inventions is most promising way to tackle these two problems. Since the successive discoveries of penicillin and streptomycin in 1940s, numerous biologically active metabolites have been discovered from different microorganisms, especially actinomycetes. In recent years, actinomycetes that inhabit unexplored environments have received significant attention due to their broad diversity and distinctive metabolic potential with medical, agricultural and industrial importance. In this scenario, endophytic actinomycetes that inhabit living tissues of plants are emerging as a potential source of novel bioactive compounds for the discovery of drug leads. Also, endophytic actinomycetes are considered as bio-inoculants to improve crop performance through organic farming practices. Further efforts on exploring the endophytic actinomycetes associated with the plants warrant the likelihood of discovering new taxa and their metabolites with novel chemical structures and biotechnological importance. This mini-review highlights the recent achievements in isolation of endophytic actinomycetes and an assortment of bioactive compounds.
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Affiliation(s)
- Meeta Masand
- School of Life sciences, Suresh Gyan Vihar University, Jaipur, India
| | - Polpass Arul Jose
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, India. .,Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, India.
| | - Ekta Menghani
- Department of Biotechnology, School of Science, JECRC University, Jaipur, India
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Thawai C. Micromonospora costi sp. nov., isolated from a leaf of Costus speciosus. Int J Syst Evol Microbiol 2015; 65:1456-1461. [DOI: 10.1099/ijs.0.000120] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An endophytic actinobacterial strain, CS1-12T, was isolated from a leaf of Costus speciosus. Single spores were observed directly on the substrate mycelia. The cell-wall peptidoglycan of this strain exhibited meso-diaminopimelic acid and 3-OH-meso-diaminopimelic acid. Arabinose, glucose, ribose, xylose and rhamnose were detected as whole-cell sugars. The diagnostic phospholipids of this strain were phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and phosphatidylinositol mannosides. The predominant menaquinones were MK-10(H6), MK-10(H8), MK-9(H4) and MK-10(H4). The main components of the cellular fatty acids (>10 %) were iso-C15 : 0, anteiso-C17 : 0, iso-C16 : 0 and anteiso-C15 : 0. The G+C content of the genomic DNA was 72.8 mol%. 16S rRNA gene sequence analysis data showed that strain CS1-12T should be classified in the genus
Micromonospora
and that it is closely related to
Micromonospora fulviviridis
DSM 43906T (99.3 %). The physiological, biochemical and chemotaxonomic properties, including the DNA–DNA hybridization results, indicated that strain CS1-12T could be judged a novel species of the genus
Micromonospora
, for which the name Micromonospora costi sp. nov. is proposed. The type strain is CS1-12T ( = BCC 58124T = NBRC 109518T).
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Affiliation(s)
- Chitti Thawai
- Actinobacterial Research Unit, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
- Department of Biology, Faculty of Science, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
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Zhao J, Guo L, He H, Liu C, Zhang Y, Li C, Wang X, Xiang W. Micromonospora taraxaci sp. nov., a novel endophytic actinomycete isolated from dandelion root (Taraxacum mongolicum Hand.-Mazz.). Antonie van Leeuwenhoek 2014; 106:667-74. [DOI: 10.1007/s10482-014-0237-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 07/14/2014] [Indexed: 11/29/2022]
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