SeqCode Registry
Register List https://seqco.de/r:47616awc [2026]

Ekhidna algicida sp. nov.

Submitted by Graff van Creveld, Shiri

Abstract

Ekhidna algicida sp. nov. strain To15, isolated from the oligotrophic Pacific Ocean (16°N, 140°W) based on its algicidal effect on the pelagic diatom Thalassiosira oceanica

Species Ekhidna algicida

Etymology
[al.gi.ci'da] L. fem. n. alga, alga; L. masc. n. suff. -cida, killer; N.L. masc. n. algicida, alga-killer referring to this organism killing microalgae
Nomenclatural type
NCBI Assembly: GCA_051379705.1 Ts
Reference Strain
Strain sc|0039740: To15 = ATCC TSD-518
Description
Cells are yellow motile rods length up to 5.2 µm (average 3.6±0.7 µm), width of 0.43±0.10 µm. Cells can grow on ½MB, seawater-peptone, or in co-culture with diatoms as the sole carbon and amino-acids source. The reference strain, To15T, was isolated from seawater of the tropical Pacific Ocean 16 °N, 140 °W at 15 m water depth. The DNA G+C content of the nomenclatural type is 40.38 mol% (determined from the genome sequence), and the genome is 3.97 Mb in length. 
Classification
Bacteria » Bacteroidota » Cytophagia » Cytophagales » Reichenbachiellaceae » Ekhidna » Ekhidna algicida
References
Effective publication: Graff van Creveld et al., 2025 [1]
Assigned taxonomically: Alain et al., 2010 [2]

References

  1. Graff van Creveld et al. (2025). Induced pathogenicity toward open-ocean diatoms by a filterable bacterium Ekhidna algicida sp. nov. The ISME Journal. DOI:10.1093/ismejo/wrag038
  2. Alain et al. (2010). Ekhidna lutea gen. nov., sp. nov., a member of the phylum Bacteroidetes isolated from the South East Pacific Ocean. International Journal of Systematic and Evolutionary Microbiology. DOI:10.1099/ijs.0.018804-0

Register List Certificate of Validation

On behalf of the Committee on the Systematics of Prokaryotes Described from Sequence Data (SeqCode Committee), we hereby certify that the Register List seqco.de/r:47616awc submitted by Graff van Creveld, Shiri and including 1 new name has been successfully validated.


Date of Priority: 2026-03-16 05:45 UTC
DOI: 10.57973/seqcode.r:47616awc