Plakortis

Plakortis is a genus of marine sponges in the order Homosclerophorida,^[1] first described by Franz Eilhard Schulze in 1880.^[1][2]

Plakortis
An unidentified Plakortis species
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Class:	Homoscleromorpha
Order:	Homosclerophorida
Family:	Plakinidae
Genus:	Plakortis Schulze, 1880
Type species
Plakortis simplex Schulze, 1880
Synonyms[1]
Placortis (misspelling) Roosa de Laubenfels, 1934

Description

Plakortis sponges are characterised by having:^[3]

1. inorganic (spicular) skeletal complement
2. Skeleton composed mainly of diods, triods, and/or calthrops in one size class
3. Lophose diods, triods, or calthrops complement the main skeleton of non-lophose spicules
4. no lophose spicules
5. diactinal "microscleres" (microrhabs) in some species

Species

List of accepted species:^[1]

• Plakortis albicans Cruz-Barraza & Carballo, 2005
• Plakortis angulospiculatus (Carter, 1879)
• Plakortis badabaluensis Ubare & Mohan, 2016
• Plakortis bergquistae Muricy, 2011
• Plakortis clarionensis Cruz-Barraza, Vega & Carballo, 2014
• Plakortis communis Muricy, 2011
• Plakortis copiosa Pulitzer-Finali, 1993
• Plakortis dariae Ereskovsky, Lavrov & Willenz, 2014
• Plakortis deweerdtaephila Vicente, Zea & Hill, 2016
• Plakortis edwardsi Ereskovsky, Lavrov & Willenz, 2014
• Plakortis erythraena Lévi, 1958
• Plakortis fromontae Muricy, 2011
• Plakortis galapagensis Desqueyroux-Faúndez & van Soest, 1997
• Plakortis halichondrioides (Wilson, 1902)
• Plakortis hooperi Muricy, 2011
• Plakortis insularis Moraes & Muricy, 2003
• Plakortis japonica (Hoshino, 1977)
• Plakortis kenyensis Pulitzer-Finali, 1993
• Plakortis lita de Laubenfels, 1954
• Plakortis mesophotica Idan, Shefer, Feldstein & Ilan, 2021
• Plakortis microrhabdifera Moraes & Muricy, 2003
• Plakortis myrae Ereskovsky, Lavrov & Willenz, 2014
• Plakortis nigra Lévi, 1953
• Plakortis petrupaulensis Domingos, Moraes & Muricy, 2013
• Plakortis potiguarensis Domingos, Moraes & Muricy, 2013
• Plakortis pulvillus Samaai, Pillay & Janson, 2019
• Plakortis quasiamphiaster Díaz & van Soest, 1994
• Plakortis ruetzleri Lage, Muricy, Ruiz & Pérez, 2018
• Plakortis simplex Schulze, 1880
• Plakortis spinalis Domingos, Moraes & Muricy, 2013
• Plakortis symbiotica Vicente, Zea & Hill, 2016
• Plakortis zyggompha (de Laubenfels, 1934)

Literature

Chemical and medecinal properties

• Paul Ralifo; Laura Sanchez; Nadine C Gassner; Karen Tenney; R Scott Lokey; Theodore R Holman; Frederick A Valeriote; Phillip Crews (1 January 2007). "Pyrroloacridine alkaloids from Plakortis quasiamphiaster: structures and bioactivity". Journal of Natural Products. 70 (1): 95–99. doi:10.1021/NP060585W. ISSN 0163-3864. PMC 1839848. PMID 17253856. Wikidata Q42875300.
• Sridevi Ankisetty; Deborah J. Gochfeld; M. Cristina Diaz; Shabana I. Khan; Marc Slattery (25 August 2010). "Chemical constituents of the deep reef caribbean sponges Plakortis angulospiculatus and Plakortis halichondrioides and their anti-inflammatory activities". Journal of Natural Products. 73 (9): 1494–1498. doi:10.1021/NP100233D. ISSN 0163-3864. PMID 20738102. Wikidata Q84803121.
• Florecita S. De Guzman; Francis J. Schmitz (July 1990). "Peroxy Aliphatic Esters from the Sponge Plakortis lita". Journal of Natural Products. 53 (4): 926–931. doi:10.1021/NP50070A021. ISSN 0163-3864. Wikidata Q104397018.
• J. C. Braekman; D. Daloze; S. De Groote; J. B. Fernandes; R. W. Van Soest (3 July 1998). "New polyketides from the sponge Plakortis sp". Journal of Natural Products. 61 (8): 1038–1042. doi:10.1021/NP980096Z. ISSN 0163-3864. PMID 9722495. Wikidata Q77171802.
• A Rudi; Y Kashman (October 1993). "Three new cytotoxic metabolites from the marine sponge Plakortis halichondrioides". Journal of Natural Products. 56 (10): 1827–1830. doi:10.1021/NP50100A027. ISSN 0163-3864. PMID 8277322. Wikidata Q72696133.