A straightforward method is described for screening methanotrophic colonies for soluble methane monooxygenase (sMMO) activity on solid media. Such activity results in the development of a colored complex between 1- naphthol, which is formed when sMMO reacts with naphthalene, and o- dianisidine (tetrazotized). Methanotrophic colonies expressing sMMO turned deep purple when exposed successively to naphthalene and o-dianisidine. The method was evaluated within the contexts of two potential applications. The first was for the enumeration of Methylosinus trichosporium OB3b in a methane-amended, unsaturated soil column dedicated to vinyl chloride treatment. The second application was for the isolation and enumeration of sMMO-bearing methanotrophs from sanitary landfill soils. The technique was effective in both applications.
|Original language||English (US)|
|Number of pages||6|
|Journal||Applied and Environmental Microbiology|
|State||Published - 1992|
ASJC Scopus subject areas
- Environmental Science(all)