Emended description of the genus Henriciella: morphological and phylogenetic analysis identifies two subgenera with different reproductive strategies
- 1University of Scranton
Abstract
Henriciella is the only genus with reported non-prosthecate members in the family Hyphomonadaceae, a large group of dimorphic prosthecate bacteria. Using type strains, we reinvestigated growth in media shown to support prosthecate morphotypes in marine caulobacters. We report that Marine Broth (MB) and Peptone Yeast Extract (PYE)-derived media supported prosthecate populations for all Henriciella species. Surprisingly, we observed that H. aquimarina, H. mobilis, and H. pelagia reproduce by tip budding whereas H. marina and H. liltoralis reproduce by asymmetric binary fission. These two observed reproductive strategies resemble those characterized for the model prosthecate bacteria Hyphomonas neptunium and Caulobacter crescentus. Phylogenomic analysis indicates that H. marina, H. litoralis, H. algicola, and H. barbarensis form a monophyletic subgenus that reproduces by asymmetric binary fission. We propose genus and species emendations that correct the record on this fascinating genus.
Related
- Type-Based Morphological Reassessment of Nola yoshinensis and N. kanshireiensis (Lepidoptera, Nolidae), with Description of a Previously Misidentified New Species in Asia †
- Morphological and Phylogenetic Characterization of Five Unrecorded Endophytic Fungal Species from Woody Plants in Korea
- MacronariaMatrix: a curated cross-matrix database of morphological phylogenetic characters in macronarian sauropods
- Genomic and phylogenetic re-assessment of the genus Stenotrophomonas: Description of Stenotrophomonas thermophila sp. nov., and the proposal of Parastenotrophomonas gen. Nov., Pseudostenotrophomonas gen. Nov., Pedostenotrophomonas gen. Nov., and Allostenotrophomonas gen. Nov.
- Morphological and multilocus phylogenetic analysis of Sirococcus (Diaporthales, Gnomoniaceae) on woody hosts from Fujian, Shandong, and Yunnan, China: Two new species and two new records
BibTeX
@misc{colby2026emended,
title = {{Emended description of the genus Henriciella: morphological and phylogenetic analysis identifies two subgenera with different reproductive strategies}},
author = {S. Colby and A. Cosklo and E. Diazgranados and N. Fuller and A. Garippa and H. Muhammed and L. Wall and G. Washney and M. L. Watson and D. T. Kysela and A. M. Randich},
howpublished = {bioRxiv},
year = {2026},
month = sep,
doi = {10.64898/2026.09.02.748869},
url = {https://www.biorxiv.org/content/10.64898/2026.09.02.748869v1},
note = {CC BY},
}
RIS
TY - UNPB
TI - Emended description of the genus Henriciella: morphological and phylogenetic analysis identifies two subgenera with different reproductive strategies
AU - S. Colby
AU - A. Cosklo
AU - E. Diazgranados
AU - N. Fuller
AU - A. Garippa
AU - H. Muhammed
AU - L. Wall
AU - G. Washney
AU - M. L. Watson
AU - D. T. Kysela
AU - A. M. Randich
PY - 2026
DA - 2026/09/02
PB - bioRxiv
DO - 10.64898/2026.09.02.748869
UR - https://www.biorxiv.org/content/10.64898/2026.09.02.748869v1
AB - Henriciella is the only genus with reported non-prosthecate members in the family Hyphomonadaceae, a large group of dimorphic prosthecate bacteria. Using type strains, we reinvestigated growth in media shown to support prosthecate morphotypes in marine caulobacters. We report that Marine Broth (MB) and Peptone Yeast Extract (PYE)-derived media supported prosthecate populations for all Henriciella species. Surprisingly, we observed that H. aquimarina, H. mobilis, and H. pelagia reproduce by tip budding whereas H. marina and H. liltoralis reproduce by asymmetric binary fission. These two observed reproductive strategies resemble those characterized for the model prosthecate bacteria Hyphomonas neptunium and Caulobacter crescentus. Phylogenomic analysis indicates that H. marina, H. litoralis, H. algicola, and H. barbarensis form a monophyletic subgenus that reproduces by asymmetric binary fission. We propose genus and species emendations that correct the record on this fascinating genus.
ER -