Pirum gemmata

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Pirum gemmata
Pirum gemmata.jpg
Pirum gemmata (Ichthyosporea), nuclei stained in blue with DAPI
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
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 clade, which is the earliest branching holozoan lineage. [2] [3]

References

  1. 1 2 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:10.1016/j.protis.2010.06.002. PMID   20708961.
  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:10.1016/j.funeco.2013.03.005.
  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". Current Biology. 25 (18): 2404–2410. doi: 10.1016/j.cub.2015.07.053 . PMID   26365255.