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Species Mesorhizobium opportunistum
Name: Mesorhizobium opportunistum Nandasena et al. 2009
Etymology: op.por.tu.nis’tum. N.L. neut. adj. opportunistum, opportunistic, after the opportunistic behaviour of the organism in obtaining symbiotic genes from other root-nodule bacteria and its ability to nodulate a broad range of legume hosts; from L. masc. adj. opportunus, opportune, advantageous, serviceable, useful
Pronunciation, gender: op-por-tu-NIS-tum, neuter
Type strain: DSM 28868; HAMBI 3007; LMG 24607; WSM2075
See detailed strain information at
Conduct genome-based taxonomy at
16S rRNA gene:
AY601515
Analyse
FASTA
Valid publication:
Nandasena KG, O'Hara GW, Tiwari RP, Willems A, Howieson JG. Mesorhizobium australicum sp. nov. and Mesorhizobium opportunistum sp. nov., isolated from Biserrula pelecinus L. in Australia. Int J Syst Evol Microbiol 2009; 59:2140-2147. 
IJSEM list:
Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 59, part 9 of the IJSEM. Int J Syst Evol Microbiol 2009; 59:2921-2922.
Nomenclatural status: validly published under the ICNP
Taxonomic status: correct name
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Notes:
- 🧬 The phylogenomic assignment score of this taxon is 0.10605 (N = 22).
- 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
- 🎓 Name mentioned 5 times in PubMed until 2025-06-04.
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🧍 The phylogenetic position of this species was determined in a genome-scale analysis by Hördt et al. (2020).
Publication:
Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468.
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🧍 The epithet opportunistum is a neo-Latin adjective, not a Latin adjective as cited in the paper by Nandasena et al. 2009.
Publication:
Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.
Parent taxon: Mesorhizobium Jarvis et al. 1997
Assigned by:
Nandasena KG, O'Hara GW, Tiwari RP, Willems A, Howieson JG. Mesorhizobium australicum sp. nov. and Mesorhizobium opportunistum sp. nov., isolated from Biserrula pelecinus L. in Australia. Int J Syst Evol Microbiol 2009; 59:2140-2147.
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Record number: 788075
This LPSN page was printed on 2025-11-10 17:40:19