| 词条 | Pirum gemmata |
| 释义 |
| image = Pirum gemmata.jpg | image_caption = Pirum gemmata (Ichthyosporea), nuclei stained in blue with DAPI | classis = Ichthyosporea | ordo = Ichthyophonida | familia = | genus = Pirum | species = P. gemmata | binomial = Pirum gemmata | binomial_authority = Marshall, 2008 | domain = Eukaryota | unranked_regnum = Holozoa | unranked_superregnum = Opisthokonta }}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] P. 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. TaxonomyP. gemmata is a member of the Ichthyosporea clade, which is the earliest branching holozoan lineage.[2][3]ApplicationsP. gemmata can easily be cultured axenically in marine broth medium. Given its phylogenetic position as a close unicellular relative of animals, P. gemmata could potentially provide important insights into the origin of multicellular animals. References1. ^1 {{Cite journal|last=Marshall|first=Wyth L.|last2=Berbee|first2=Mary L.|date=2011-01-01|title=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)|journal=Protist|volume=162|issue=1|pages=33–57|doi=10.1016/j.protis.2010.06.002|pmid=20708961}} {{Taxonbar|from=Q30715601}}2. ^{{Cite journal|last=Glockling|first=Sally L.|last2=Marshall|first2=Wyth L.|last3=Gleason|first3=Frank H.|date=2013-08-01|title=Phylogenetic interpretations and ecological potentials of the Mesomycetozoea (Ichthyosporea)|journal=Fungal Ecology|volume=6|issue=4|pages=237–247|doi=10.1016/j.funeco.2013.03.005}} 3. ^{{Cite journal|last=Torruella|first=Guifré|last2=Mendoza|first2=Alex de|last3=Grau-Bové|first3=Xavier|last4=Antó|first4=Meritxell|last5=Chaplin|first5=Mark A.|last6=Campo|first6=Javier del|last7=Eme|first7=Laura|last8=Pérez-Cordón|first8=Gregorio|last9=Whipps|first9=Christopher M.|title=Phylogenomics Reveals Convergent Evolution of Lifestyles in Close Relatives of Animals and Fungi|journal=Current Biology|volume=25|issue=18|pages=2404–2410|doi=10.1016/j.cub.2015.07.053|pmid=26365255|year=2015}} 1 : Mesomycetozoea |
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