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Mesorhizobium maamorense

Citation

Formal styling
Mesorhizobium maamorense Alami et al., 2026
Effective publication
Alami et al., 2026
SeqCode status
Valid (SeqCode)
Register List
seqco.de/r:-bmttyad (validated)
Canonical URL
https://seqco.de/i:51228

Nomenclature

Rank
Species
Syllabication
ma.a.mo.ren'se
Etymology
N.L. neut. adj. maamorense, pertaining to the Maamora forest, the region of isolation
Nomenclatural type
NCBI Assembly: GCA_044998965.1
Reference strain
Strain sc|0040742: ORM16 = DSM 120599 = CCMM B1359 (Cat. ) Lookup StrainInfo
Nomenclatural status
Validly published under the SeqCode

Taxonomy

Description
The species is an aerobic, non-spore-forming, Gram-negative rhizobium that appears as an elongated rod, approximately 1 µm wide and 2.5 µm long. On YEM medium, it grows relatively quickly, with a population doubling time of 5 to 6 hours, forming 1 mm colonies within five days. Ideal growth conditions are a temperature of 28°C and a neutral pH of 7, though it remains viable at temperatures as high as 37°C. The bacteria is also resilient to environmental challenges, tolerating saline stress equivalent to 515 mM NaCl and osmotic stress from up to 20% PEG.
Classification
Bacteria » Pseudomonadota » Alphaproteobacteria » Hyphomicrobiales » Phyllobacteriaceae » Mesorhizobium » Mesorhizobium maamorense
Parent
Mesorhizobium ncbi assigned in Laadraoui et al., 2023

Genomics

Accession
NCBI Assembly:GCA_044998965.1
Cultures
Strain sc|0040742
Type
Isolate Genome
Estimated Quality Metrics
  • Completeness: 93.51%
  • Contamination: 1.39%
  • Quality: 86.56
Ribosomal and transfer RNA genes
  • 2 16S rRNAs (up to 100.0%)
  • 2 23S rRNAs (up to 100.0%)
  • tRNAs for 20 amino acids
Sequencing depth
50.0 ×
Source
Other features
  • G+C Content: 63.0%
  • Coding Density: 86.17%
  • Codon Table: 11
  • N50: 6,633,211 bp
  • Contigs: 2
  • Largest Contig: 6,633,211 bp
  • Assembly Length: 6,752,650 bp
  • Ambiguous Assembly Fraction: 0.0%
Submitter comments
A total of 62,904 reads were generated through sequencing, with an N50 length of 9,919 bp. Adapter sequences from the Nanopore library were removed using Porechop (v0.2.4). Subsequent filtering with NanoFilt (v2.8.0) and further adapter trimming resulted in a refined dataset of 58,611 reads. These long reads were then assembled de novo using Flye assembler (v2.9.3-b1797), producing two contigs. The assembly was polished through four rounds of Racon (v1.5.0), followed by a final polishing step with Medaka (v2.0.1).
Automated checks
Complete
See additional details
Last modified about 1 month ago

Metadata

Outside links and data sources
Search sequences
Local history
Registered
8 months ago by Alami, Soufiane
Submitted
8 months ago by Alami, Soufiane
Curators
Endorsed
6 months ago by Palmer, Marike
Validated
19 days ago by St. John, Emily
Date of priority
2026-01-15 07:09 PM (UTC)

Publications
2

Citation Title
Alami et al., 2026, Antonie van Leeuwenhoek Mesorhizobium maamorense sp. nov., a novel symbiotic nitrogen-fixing bacterium isolated from nodules of Ononis repens in the Moroccan Maâmora forest
Effective publication
Laadraoui et al., 2023, Symbiosis Identification of the symbiovar maamori in Mesorhizobium isolated from nodules of Ononis repens in the Maamora forest (Morocco)
Assigned this taxon


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