Table 2.

Biochemical characteristics of M. zatmaniiisolated in this study and comparison to those ofMethylobacterium spp. and Roseomonas spp.

TestReaction type or resulta
Isolated strainMethylobacteriumspp.bRoseomonasspp.b
Oxidase+++
Oxidation of methanol++
Growth on MacConkey agar±+
Growth at 42°C(+)+
Urease+++
UV absorption of colonies++
Gram stainGram-negative vacuolated short rodsGram-negative vacuolated short rodsGram-negative plump coccoid rods
  • a +, positive reaction within 48 h; −, negative reaction; (+), late reaction (3 to 7 days).

  • b Data taken from references12 and 14.