Pseudorivibacter rhizosphaerae SY

Hwang, Chi Young, Cho, Eui-Sang, Jung, Dong-Hyun, Lee, Ki-Eun, Cha, In-Tae & Seo, Won-Jae Chi and Myung-Ji, 2023, A report on five unrecorded bacterial species belonging to the phyla Actinomycetota, Bacillota and Pseudomonadota in Korea isolated in 2020, Journal of Species Research 12, pp. 1-6 : 5

Description of Pseudorivibacter rhizosphaerae SY 1 (iii-1)

Cells are Gram-staining-negative, non-flagellated, and rod-shaped with 0.8-1.0 × 1.5-1.8 μm in size. Colonies are circular, smooth, entire and cream white colored after three days of incubation at 30℃ on R2A. The strain is positive for reduction of nitrates to nitrite, urease, D- glu- cose, and D- mannose; but negative for indole production, glucose acidification, arginine dihydrolase, β -glucosidase (esculin hydrolysis), protease (gelatin hydrolysis), and β -galactosidase (PNPG). The strain assimilates D- glucose, D- mannose, L- arabinose, D- mannitol, D- maltose, gluconate, N -acetyl-D- glucosamine, caprate, adipate, malate, citrate, and phenyl-acetate; but does not utilize D- mannitol, salicin, D- melibiose, L- arabinose, propionate, caprate, valerate, citrate, L- histidine, 2-ketogluconate, 3-hydroxy-bu- tyrate, 4-hydroxy-benzoate, L- proline, N -acetyl-D- glucos- amine, D- ribose, inositol, D- sucrose, D- maltose, itaconate, suberate, malonate. lactate, L- alanine, 5-ketogluconate, glycogen, 3-hydroxy-benzoate, and L- serine. The strain produces esterase (C4), esterase lipase (C8), leucine arylamidase, acid phosphatase, and naphtol-AS-BI-phosphohydrolase; but does not produce lipase (C14), valine arylamidase, cystine arylamidase, trypsin (weak), α -chy- motrypsin, α -galactosidase, β -galactosidase, β -glucuro- nidase, α -glucosidase, β -glucosidase, N -acetyl- β -glucos- aminidase, α -mannosidase, and α -fucosidase. Strain SY1 (iii-1) (= NIBRBAC000506103) was isolated from a paddy soil sample, Jeju Island, Korea.