This document is Validation List No. 82 from the International Journal of Systematic and Evolutionary Microbiology, published in 2001. It announces the valid publication of 18 new bacterial and archaeal names and combinations that were previously published elsewhere. These include one new subspecies (Alcaligenes faecalis subsp. parafaecalis) and 17 new species across various genera including Desulfurococcus, Enterobacter, Methylovorus, Nocardia, Paracoccus, Psychrobacter, Streptomyces, Thermococcus, and Thermoproteus. The validation process ensures that nomenclatural requirements are met, though inclusion on the list does not constitute taxonomic acceptance. Each validated name is accompanied by reference information, type strain designations, and culture collection accession numbers. The organisms span diverse environments and metabolic types, from thermophilic archaebacteria isolated from hot springs to psychrophilic bacteria from Antarctic krill and plant-associated methylotrophs.

Key findings

• 18 new microbial names (1 subspecies and 17 species) were validly published through this validation list
• Organisms include thermophilic and psychrophilic bacteria and archaea from diverse environments such as hot springs, Antarctic waters, and plant roots
• Type strains are deposited in international culture collections (DSM, JCM, CIP, NCIMB, VKM) with multiple accession numbers for each species
• Validation establishes nomenclatural availability without implying taxonomic acceptance of these taxa
• Metabolic diversity among validated species includes methylotrophy, proteolysis, amylolysis, and various other specialized metabolic capabilities