Reproductive resting forms of Arthrobacter globiformis

Submerged cultures of Arthrobacter globiformis grown in media unbalanced wi th respect to carbon and nitrogen sources were found to contain cells exhib iting features typical of resting forms: long-term viability, specific ultr astructure, dormant metabolism, and thermoresistance. Such cells were produ ced not only in the collection strain VKM B-1112, but also in the A. globif ormis strains isolated from 2- to 3-million-year-old permafrost sediments.