# Pirum gemmata

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Unicellular species

Pirum gemmata Pirum gemmata (Ichthyosporea), nuclei stained in blue with DAPI Scientific classification Domain: Eukaryota Clade: Obazoa Clade: Opisthokonta Class: Ichthyosporea Order: Eccrinida Family: Piridae Genus: Pirum Marshall & Berbee 2010 Species: P. gemmata Binomial name Pirum gemmata Marshall & Berbee 2010

***Pirum gemmata*** is a unicellular eukaryote that belongs to the Ichthyosporea clade, a group of protists closely related to animals. *P. gemmata* was isolated from the gut contents of a marine invertebrate, specifically the detritivorous peanut worm *Phascolosoma agassizii*.[1]

*Pirum gemmata*’s growth under culture conditions, is through the development of a mature syncytial stage that undergoes sporogenesis and eventually releases endospores through one or more openings in the parent cell wall. Mature cells are multinucleated, with a cell wall, and can measure up to 200 μm.[1] Endospores are amoeboid and some have pseudopod-like cell extensions.

## Taxonomy

*Pirum gemmata* is a member of the [Ichthyosporea](/source/Ichthyosporea) clade, which is the earliest branching [holozoan](/source/Holozoa) lineage.[2][3]

## References

1. ^ [***a***](#cite_ref-:0_1-0) [***b***](#cite_ref-:0_1-1) Marshall, Wyth L.; Berbee, Mary L. (13 August 2010). "Facing Unknowns: Living Cultures (*Pirum gemmata* gen. nov., sp. nov., and *Abeoforma whisleri*, gen. nov., sp. nov.) from Invertebrate Digestive Tracts Represent an Undescribed Clade within the Unicellular Opisthokont Lineage Ichthyosporea (Mesomycetozoea)". *Protist*. **162** (1): 33–57. [doi](/source/Doi_(identifier)):[10.1016/j.protis.2010.06.002](https://doi.org/10.1016%2Fj.protis.2010.06.002). [PMID](/source/PMID_(identifier)) [20708961](https://pubmed.ncbi.nlm.nih.gov/20708961).

1. **[^](#cite_ref-2)** Glockling, Sally L.; Marshall, Wyth L.; Gleason, Frank H. (2013-08-01). "Phylogenetic interpretations and ecological potentials of the Mesomycetozoea (Ichthyosporea)". *Fungal Ecology*. **6** (4): 237–247. [doi](/source/Doi_(identifier)):[10.1016/j.funeco.2013.03.005](https://doi.org/10.1016%2Fj.funeco.2013.03.005).

1. **[^](#cite_ref-3)** Torruella, Guifré; Mendoza, Alex de; Grau-Bové, Xavier; Antó, Meritxell; Chaplin, Mark A.; Campo, Javier del; Eme, Laura; Pérez-Cordón, Gregorio; Whipps, Christopher M. (2015). ["Phylogenomics Reveals Convergent Evolution of Lifestyles in Close Relatives of Animals and Fungi"](https://doi.org/10.1016%2Fj.cub.2015.07.053). *Current Biology*. **25** (18): 2404–2410. [doi](/source/Doi_(identifier)):[10.1016/j.cub.2015.07.053](https://doi.org/10.1016%2Fj.cub.2015.07.053). [PMID](/source/PMID_(identifier)) [26365255](https://pubmed.ncbi.nlm.nih.gov/26365255).

v t e Opisthokont: Mesomycetozoea Domain Archaea Bacteria Eukaryota (major groups Metamonada Discoba Diaphoretickes Hacrobia Cryptista Rhizaria Alveolata Stramenopiles Plants Amorphea Amoebozoa Opisthokonta Animalia Fungi Mesomycetozoea) Dermocystida Rhinosporidiaceae Amphibiocystidium Chromosphaera Dermocystidium Dermosporidium Dermotheca Rhinosporidium Sphaerothecum Valentines Ichthyophonida Sphaeroformina Creolimacidae Anurofeca Creolimax Sphaeroforma Piridae Abeoforma Caullerya Pirum Psorospermidae Psorospermis Trichomycina Amoebidiidae Amoebidium Eccrinaceae Alacrinella Arundinula Astreptonema Eccrinidus Eccrinoides Enterobryus Enteromyces Enteropogon Leidyomyces Palavascia Paramacrinella Passalomyces Ramacrinella Taeniella Taeniellopsis Ichthyophonidae Ichthyophonus Paramoebidiidae Paramoebidium Parataeniellaceae Lajassiella Nodocrinella Parataeniella

Taxon identifiers Pirum gemmata Wikidata: Q30715601 NCBI: 749231

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