| Mixta intestinalis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Enterobacterales, Family Erwiniaceae, Genus Mixta,
Mixta intestinalis (Prakash et al. 2015) Palmer et al. 2018.
Basonym: Pantoea intestinalis Prakash et al. 2015.
Mixta intestinalis (Prakash et al. 2015) Palmer et al. 2018.
Basonym: Pantoea intestinalis Prakash et al. 2015.
Gram-negative rods, 1.2 x 0.6 μm. Motile. Non-spore-forming.
Colonies are smooth cream, 2 mm in diameter after 24 h of incubation on TSA. Grows
at 15-45 ºC with optimal growth at 35 ºC. Range of pH for growth is 4-9 with optimum
growth at pH 7. Tolerates up to 10% NaCl but grows optimally with 0.5% NaCl. Good
growth occurs on Luria agar, nutrient agar, R2A agar and TSA. Facultatively anaerobic.
at 15-45 ºC with optimal growth at 35 ºC. Range of pH for growth is 4-9 with optimum
growth at pH 7. Tolerates up to 10% NaCl but grows optimally with 0.5% NaCl. Good
growth occurs on Luria agar, nutrient agar, R2A agar and TSA. Facultatively anaerobic.
Isolated from a stool sample of a healthy human subject residing in Pune, Maharastra, India.
Undetermined.
- Palmer M, Steenkamp ET, Coetzee MPA, Avontuur JR, Chan WY, van Zyl E, Blom J, Venter SN. Mixta gen. nov., a new genus in the
Erwiniaceae. Int J Syst Evol Microbiol 2018; 68:1396-1407. - Prakash O, Nimonkar Y, Vaishampayan A, Mishra M, Kumbhare S, Josef N, Shouche YS. Pantoea intestinalis sp. nov., isolated
from the human gut. Int J Syst Evol Microbiol 2015; 65:3352-3358. - Xia M, Wang J, Huo YX, Yang Y. Mixta tenebrionis sp. nov., isolated from the gut of the plastic-eating mealworm Tenebrio molitor L.
Int J Syst Evol Microbiol 2020; 70:790-796.
Positive results for acid phosphatase, catalase, cellulase, aesculin hydrolysis, beta-glucosidase, beta-galactosidase, leucine
arylamidase, nitrate reductase, 4-nitrophenyl-beta-D-galactopyranoside (PNPG), naphthol-AS-BI-phosphohydrolase, trypsin Voges–
Proskauer test, valine arylamidase, acid production from D-fucose, D-glucose and lactose.
Assimilates D-glucose, gluconate, L-arabinose, D-mannose, D-mannitol, N-acetylglucosamine and maltose.
Negative results for alkaline phosphatase, arginine dihydrolase, amylase, DNase, esterase, esterase lipase, cystine arylamidase,
alpha-chymotrypsin, alpha-fucosidase, alpha-galactosidase, beta-glucuronidase, alpha-glucosidase, gelatinase, H2S production, N-
acetyl beta-glucosaminidase, lipase, alpha-mannosidase, oxidase, urease, acid production from amygdalin, salicin, ᴅ-sorbitol, and
sucrose.
No utilization of trisodium citrate, gelatin, capric acid, adipic acid and phenylacetic acid.
arylamidase, nitrate reductase, 4-nitrophenyl-beta-D-galactopyranoside (PNPG), naphthol-AS-BI-phosphohydrolase, trypsin Voges–
Proskauer test, valine arylamidase, acid production from D-fucose, D-glucose and lactose.
Assimilates D-glucose, gluconate, L-arabinose, D-mannose, D-mannitol, N-acetylglucosamine and maltose.
Negative results for alkaline phosphatase, arginine dihydrolase, amylase, DNase, esterase, esterase lipase, cystine arylamidase,
alpha-chymotrypsin, alpha-fucosidase, alpha-galactosidase, beta-glucuronidase, alpha-glucosidase, gelatinase, H2S production, N-
acetyl beta-glucosaminidase, lipase, alpha-mannosidase, oxidase, urease, acid production from amygdalin, salicin, ᴅ-sorbitol, and
sucrose.
No utilization of trisodium citrate, gelatin, capric acid, adipic acid and phenylacetic acid.
(c) Costin Stoica
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