SeqCode Registry
cognitis nomina
  • About
  • Search
  • •
  • Login
  • Register
Authors Zheng

JSON
See as cards

Zheng, Hao


Publications
2

CitationNamesAbstract
Comparative genomics of Elusimicrobiaceae (phylum Elusimicrobiota) and description of the isolates Elusimicrobium simillimum sp. nov., Elusimicrobium posterum sp. nov., and Parelusimicrobium proximum gen. nov. sp. nov Mies et al. (2025). Systematic and Applied Microbiology 48 (3) Avelusimicrobium pullorum Proelusimicrobium tauri Avelusimicrobium fimicola Proelusimicrobium bovinum Avelusimicrobium vaccinum Avelusimicrobium stercoris Avelusimicrobium pullicaecorum Proelusimicrobium excrementi Ts Avelusimicrobium bubulum Avelusimicrobium pecoris Avelusimicrobium faecicola Avelusimicrobium aviculae Avelusimicrobium faecis Avelusimicrobium intestinipullorum Proelusimicrobium volucris Avelusimicrobium caledoniense Avelusimicrobium cornigerorum Avelusimicrobium gallicola Avelusimicrobium gallinaceum Avelusimicrobium ruminicola Elusimicrobium euhamitermitis Avelusimicrobium Avelusimicrobium luingense Avelusimicrobium intestinale Avelusimicrobium alvi Proelusimicrobium Avelusimicrobium excrementipullorum Ts
Endomicrobium proavitum, the first isolate of Endomicrobia class. nov. (phylum Elusimicrobia) – an ultramicrobacterium with an unusual cell cycle that fixes nitrogen with a Group IV nitrogenase Zheng et al. (2016). Environmental Microbiology 18 (1) “Liberimonadaceae” Endomicrobiia

Endomicrobium proavitum, the first isolate of Endomicrobia class. nov. (phylum Elusimicrobia) – an ultramicrobacterium with an unusual cell cycle that fixes nitrogen with a Group IV nitrogenase
SummaryThe bacterial tree contains many deep‐rooting clades without any cultured representatives. One such clade is ‘Endomicrobia’, a class‐level lineage in the phylum Elusimicrobia represented so far only by intracellular symbionts of termite gut flagellates. Here, we report the isolation and characterization of the first free‐living member of this clade from sterile‐filtered gut homogenate of defaunated (starch‐fed) Reticulitermes santonensis. Strain Rsa215 is a strictly anaerobic ultramicrobacterium that grows exclusively on glucose, which is fermented to lactate, acetate, hydrogen and CO2. Ultrastructural analysis revealed a Gram‐negative cell envelope and a peculiar cell cycle. The genome contains a single set of nif genes that encode homologues of Group IV nitrogenases, which were so far considered to have functions other than nitrogen fixation. We documented nitrogenase activity and diazotrophic growth by measuring acetylene reduction activity and 15N2 incorporation into cell mass, and demonstrated that transcription of nifH and nitrogenase activity occur only in the absence of ammonium. Based on the ancestral relationship to ‘Candidatus Endomicrobium trichonymphae’ and other obligate endosymbionts, we propose the name ‘Endomicrobium proavitum’ gen. nov., sp. nov. for the first isolate of this lineage and the name ‘Endomicrobia’ class. nov. for the entire clade.
Search