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Proposal for the new genus Allokutzneria gen. nov. within the suborder Pseudonocardineae and transfer of Kibdelosporangium albatum Tomita et al. 1993 as Allokutzneria albata comb. nov.

¹ Microbial Genomics and Bioprocessing Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, US Department of Agriculture, Peoria, IL 61604, USA
² DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany

Correspondence
D. P. Labeda
david.labeda{at}ars.usda.gov

During the course of phylogenetic analyses based on 16S rRNA gene sequences for all currently described taxa within the family Pseudonocardineae, it became evident that Kibdelosporangium albatum DSM 44149^T was misplaced within the genus Kibdelosporangium and is phylogenetically most closely related to the genus Kutzneria. Chemotaxonomic analyses revealed that Kibdelosporangium albatum differed from Kutzneria in containing arabinose as well as galactose and mannose as diagnostic whole-cell sugars. The polar lipid pattern was distinct from both Kibdelosporangium and Kutzneria species in containing phosphatidylethanolamine containing 2-hydroxy fatty acids, lyso-phosphatidylethanolamine and lyso-phosphatidylmethylethanolamine as well as phosphatidylethanolamine, phosphatidylmethylethanolamine, diphosphatidylglycerol and phosphatidylglycerol. These data preclude the inclusion of this strain within the genus Kutzneria or Kibdelosporangium and a new genus is proposed, to be named Allokutzneria gen. nov. The type species of this new genus is Allokutzneria albata gen. nov., comb. nov., the type strain of which is R761-7^T (=NRRL B-24461^T =DSM 44149^T =ATCC 55061^T).

Details of additional sequences used in construction of Fig. 1 and a 16S rRNA gene sequence similarity matrix are available as supplementary material with the online version of this paper.