| Mycetohabitans rhizoxinica |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Betaproteobacteria, Order Burkholderiales, Family Burkholderiaceae, Genus
Mycetohabitans, Mycetohabitans rhizoxinica (Partida-Martinez et al. 2007) Estrada-de Los Santos et al. 2018.
Old synonyms: Burkholderia rhizoxina Scherlach et al. 2006, Burkholderia rhizoxinica Partida-Martinez et al. 2007, Paraburkholderia
rhizoxinica (Partida-Martinez et al. 2007) Sawana et al. 2015.
Mycetohabitans, Mycetohabitans rhizoxinica (Partida-Martinez et al. 2007) Estrada-de Los Santos et al. 2018.
Old synonyms: Burkholderia rhizoxina Scherlach et al. 2006, Burkholderia rhizoxinica Partida-Martinez et al. 2007, Paraburkholderia
rhizoxinica (Partida-Martinez et al. 2007) Sawana et al. 2015.
Gram-negative, short or coccoid rods, 0.6-1.2 x 1.2-2.0 μm, occuring singly, in pairs or
irregular clusters. Motile. Non-sporeforming.
irregular clusters. Motile. Non-sporeforming.
Colonies are cream, circular, flat, glistening, about 1 mm in diameter. Growth is
poor on agar plates and typically occurs as a very thin lawn. Diffusible pigments are
not observed. Grows in up to 2% (w/v) NaCl. Poor growth in 3% (w/v) NaCl and is
inhibited completely at 5% (w/v) NaCl. The type strain is able to grow at 16-45 ºC
and at a pH range of 5.0-7.4 (optimally at 6.0-6.5). In cultures without pH control,
growth stops at pH 7. Able to grow under aerobic and microaerophilic conditions, but
not in an anaerobic atmosphere.
poor on agar plates and typically occurs as a very thin lawn. Diffusible pigments are
not observed. Grows in up to 2% (w/v) NaCl. Poor growth in 3% (w/v) NaCl and is
inhibited completely at 5% (w/v) NaCl. The type strain is able to grow at 16-45 ºC
and at a pH range of 5.0-7.4 (optimally at 6.0-6.5). In cultures without pH control,
growth stops at pH 7. Able to grow under aerobic and microaerophilic conditions, but
not in an anaerobic atmosphere.
Isolated from the fungus Rhizopus microsporus Tieghem.
Susceptible to chloramphenicol, ciprofloxacin, imipepem, kanamycin, nalidixic acid, norfloxacin, oxytetracycline, rifampicin,
streptomycin and tetracycline. Resistant to ampicillin, lincomycin, meticillin, novobiocin, penicillin G, sulfonamide and vancomycin.
Susceptible to chloramphenicol, ciprofloxacin, imipepem, kanamycin, nalidixic acid, norfloxacin, oxytetracycline, rifampicin,
streptomycin and tetracycline. Resistant to ampicillin, lincomycin, meticillin, novobiocin, penicillin G, sulfonamide and vancomycin.
Undetermined.
- Partida-Martinez L.P., Groth I., Schmidtt I., Richter W., Roth M. and Hertweck C.: Burkholderia rhizoxinica sp. nov. and Burkholderia
endofungorum sp. nov., bacterial endosymbionts of the plant-pathogenic fungus Rhizopus microsporus. Int. J. Syst. Evol.
Microbiol., 2007, 57, 2583-2590. - Sawana, A., Adeolu, M. and Gupta, R. S. 2014. Molecular signatures and phylogenomic analysis of the genus Burkholderia:
proposal for division of this genus into the emended genus Burkholderia containing pathogenic organisms and a new genus
Paraburkholderia gen. nov. harboring environmental species. Frontiers in genetics, 5, 429. - Estrada-de Los Santos P, Palmer M, Chavez-Ramirez B, Beukes C, Steenkamp ET, Briscoe L, Khan N, Maluk M, Lafos M, Humm
E, et al. Whole Genome Analyses Suggests that Burkholderia sensu lato Contains Two Additional Novel Genera (Mycetohabitans
gen. nov., and Trinickia gen. nov.): Implications for the Evolution of Diazotrophy and Nodulation in the Burkholderiaceae. Genes
(Basel) 2018; 9:389.
Positive results for catalase, esterase (C4), esterase lipase (C8), leucine arylamidase, alpha-mannosidase,
naphthol-AS-BI-phosphohydrolase and oxidase. Can utilize glycerol.
Negative results for acid and alkaline phosphatase, cystine arylamidase, alpha-fucosidase, N-acetyl-beta-glucosamidase, alpha-
and beta-galactosidase, beta-glucuronidase, alpha- and beta-glucosidase, trypsin, alpha-chymotrypsin and valine arylamidase.
No assimilation of glucose.
naphthol-AS-BI-phosphohydrolase and oxidase. Can utilize glycerol.
Negative results for acid and alkaline phosphatase, cystine arylamidase, alpha-fucosidase, N-acetyl-beta-glucosamidase, alpha-
and beta-galactosidase, beta-glucuronidase, alpha- and beta-glucosidase, trypsin, alpha-chymotrypsin and valine arylamidase.
No assimilation of glucose.
(c) Costin Stoica
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