Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential
ABSTRACT Micromonospora strains proved to be a model organism for drug discovery and plant growth promotion (PGP). Strain DSM 115977 T was subjected to polyphasic taxonomic analysis and genome mining for biosynthetic gene clusters and PGP-associated genes in order to determine its taxonomic rank and...
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American Society for Microbiology
2025-04-01
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| Series: | Microbiology Spectrum |
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| Online Access: | https://journals.asm.org/doi/10.1128/spectrum.02129-24 |
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| author | Imen Nouioui Alina Zimmermann Juan Pablo Gomez Escribano Marlen Jando Gabriele Pötter Meina Neumann-Schaal Yvonne Mast |
| author_facet | Imen Nouioui Alina Zimmermann Juan Pablo Gomez Escribano Marlen Jando Gabriele Pötter Meina Neumann-Schaal Yvonne Mast |
| author_sort | Imen Nouioui |
| collection | DOAJ |
| description | ABSTRACT Micromonospora strains proved to be a model organism for drug discovery and plant growth promotion (PGP). Strain DSM 115977 T was subjected to polyphasic taxonomic analysis and genome mining for biosynthetic gene clusters and PGP-associated genes in order to determine its taxonomic rank and assess its biosynthetic potential. The strain was found to form a novel species within the evolutionary radiation of the genus Micromonospora. The strain contained glucose, mannose, xylose, and ribose as whole-cell sugars and the isomer DL-diaminopimelic acid in its peptidoglycan. Strain DSM 115977T had iso-C15:0, iso-C16:0, C17:1cis 9, C17:0, iso-C17:0, and 10-methyl-C17:0 as fatty acid profile (>5%) and MK10-H4 and MK10-H6 as the predominant menaquinones (>10%). The polar lipid profile consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, glycophosphatidylinositol, glycophospholipids, phosphoaminolipid, unidentified lipids, and phospholipids. The genome of the strain had a size of 7.0 Mbp with a DNA G + C content of 73.4%. It formed a well-supported sub-clade with its close phylogenomic neighbor, Micromonospora echinofusca DSM 43913T (98.7%). Digital DNA–DNA hybridization and average nucleotide identity derived from sequence comparisons between the strain and its close phylogenomic neighbors were below the thresholds of 70 and 95–96% for prokaryotic species demarcation, respectively. Based on these findings, strain DSM 115977T (Asg4T = KCTC 59188T) merits to be considered as the type strain of a new species for which the name Micromonospora reichwaldensis sp. nov. is proposed. Genome mining for biosynthetic gene clusters encoding specialized secondary metabolites highlighted its ability to produce potentially novel therapeutic compounds. The strain is rich in plant growth-promoting genes whose predicted products directly and indirectly affect the development and immune system of the plant.IMPORTANCEIn view of the significant pharmaceutical, biotechnological, and ecological potentials of micromonosporae, it is particularly interesting to enhance the genetic diversity of this genus by focusing on the isolation of novel strain from underexplored habitats, with the promise that novel bacteria will lead to new chemical entities. In this report, modern polyphasic taxonomic study confirmed the assignment of strain DSM 115977T to a novel species for which the name Micromonospora reichwaldensis sp. nov. is proposed. The strain harbors in its genomic sequence several biosynthetic gene clusters for secondary metabolites and genes associated with plant growth-promoting features. The results of this study provide a very useful basis for launching more in-depth research into agriculture and/or drug discovery. |
| format | Article |
| id | doaj-art-515978d1d61a4d61abc89d976b7c6e37 |
| institution | DOAJ |
| issn | 2165-0497 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | American Society for Microbiology |
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| series | Microbiology Spectrum |
| spelling | doaj-art-515978d1d61a4d61abc89d976b7c6e372025-08-20T03:06:51ZengAmerican Society for MicrobiologyMicrobiology Spectrum2165-04972025-04-0113410.1128/spectrum.02129-24Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potentialImen Nouioui0Alina Zimmermann1Juan Pablo Gomez Escribano2Marlen Jando3Gabriele Pötter4Meina Neumann-Schaal5Yvonne Mast6Leibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyLeibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyLeibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyLeibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyLeibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyLeibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyLeibniz-Institute DSMZ–German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyABSTRACT Micromonospora strains proved to be a model organism for drug discovery and plant growth promotion (PGP). Strain DSM 115977 T was subjected to polyphasic taxonomic analysis and genome mining for biosynthetic gene clusters and PGP-associated genes in order to determine its taxonomic rank and assess its biosynthetic potential. The strain was found to form a novel species within the evolutionary radiation of the genus Micromonospora. The strain contained glucose, mannose, xylose, and ribose as whole-cell sugars and the isomer DL-diaminopimelic acid in its peptidoglycan. Strain DSM 115977T had iso-C15:0, iso-C16:0, C17:1cis 9, C17:0, iso-C17:0, and 10-methyl-C17:0 as fatty acid profile (>5%) and MK10-H4 and MK10-H6 as the predominant menaquinones (>10%). The polar lipid profile consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, glycophosphatidylinositol, glycophospholipids, phosphoaminolipid, unidentified lipids, and phospholipids. The genome of the strain had a size of 7.0 Mbp with a DNA G + C content of 73.4%. It formed a well-supported sub-clade with its close phylogenomic neighbor, Micromonospora echinofusca DSM 43913T (98.7%). Digital DNA–DNA hybridization and average nucleotide identity derived from sequence comparisons between the strain and its close phylogenomic neighbors were below the thresholds of 70 and 95–96% for prokaryotic species demarcation, respectively. Based on these findings, strain DSM 115977T (Asg4T = KCTC 59188T) merits to be considered as the type strain of a new species for which the name Micromonospora reichwaldensis sp. nov. is proposed. Genome mining for biosynthetic gene clusters encoding specialized secondary metabolites highlighted its ability to produce potentially novel therapeutic compounds. The strain is rich in plant growth-promoting genes whose predicted products directly and indirectly affect the development and immune system of the plant.IMPORTANCEIn view of the significant pharmaceutical, biotechnological, and ecological potentials of micromonosporae, it is particularly interesting to enhance the genetic diversity of this genus by focusing on the isolation of novel strain from underexplored habitats, with the promise that novel bacteria will lead to new chemical entities. In this report, modern polyphasic taxonomic study confirmed the assignment of strain DSM 115977T to a novel species for which the name Micromonospora reichwaldensis sp. nov. is proposed. The strain harbors in its genomic sequence several biosynthetic gene clusters for secondary metabolites and genes associated with plant growth-promoting features. The results of this study provide a very useful basis for launching more in-depth research into agriculture and/or drug discovery.https://journals.asm.org/doi/10.1128/spectrum.02129-24polyphasic taxonomybioactive compoundsplant growth-promoting |
| spellingShingle | Imen Nouioui Alina Zimmermann Juan Pablo Gomez Escribano Marlen Jando Gabriele Pötter Meina Neumann-Schaal Yvonne Mast Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential Microbiology Spectrum polyphasic taxonomy bioactive compounds plant growth-promoting |
| title | Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential |
| title_full | Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential |
| title_fullStr | Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential |
| title_full_unstemmed | Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential |
| title_short | Taxonomic description of Micromonospora reichwaldensis sp. nov. and its biosynthetic and plant growth-promoting potential |
| title_sort | taxonomic description of micromonospora reichwaldensis sp nov and its biosynthetic and plant growth promoting potential |
| topic | polyphasic taxonomy bioactive compounds plant growth-promoting |
| url | https://journals.asm.org/doi/10.1128/spectrum.02129-24 |
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