Korshikoviella

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Korshikoviella
Scientific classification OOjs UI icon edit-ltr.svg
(unranked): Viridiplantae
Division: Chlorophyta
Class: Chlorophyceae
Order: Sphaeropleales
Family: Characiaceae
Genus: Korshikoviella
P.C. Silva, 1959
Species [1]

Korshikoviella is a genus of green algae in the family Characiaceae. [1]

Contents

The genus name of Korshikoviella is in honour of Aleksandr Arkadievich Korshikov (1889–1942), who was a Ukrainian botanist from the National University of Kharkiv. [2] It is sometimes spelled as Korschikoviella. [3]

The genus was circumscribed by Paul Claude Silva in Taxon vol.8 on page 63 in 1959.

Description

Korshikoviella consists of single cells that are epiphytic or epizoic on freshwater algae or crustaceans, or sometimes planktonic. Cells are narrow and spindle-shaped, 25-480 μm long; [1] one end of the cell tapers into a sharp point (or is rounded), while the other end is usually bifurcated (with the exception of K. limnetica) and may be attached to a substrate. Young cells contain a single parietal, laminar chloroplast; as the cell matures, the chloroplast divides, with adult cells having several chloroplasts along the length of the cell. Each chloroplast contains one pyrenoid. [3]

Korshikoviella reproduces asexually via zoospores. Zoospores have two flagella, a contractile vacuole, one band-shaped pyrenoid-bearing chloroplast, and an stigma. [1] They are released from the mother cell via a tear in the cell wall. [4] Sexual reproduction has been observed in Korshikoviella gracilipes . The male and female gametangia are well-differentiated from the rest of the cell. The species is oogamous, with immobile female gametes and mobile male gametes. [5]

A similar genus of algae is Ankyra . Unlike Korshikoviella, it is not epibiontic, and the cell wall of Ankyra is in two separate pieces, while that of Korshikoviella is in one piece. [6]

Habitat and distribution

Korshikoviella is found in the coastal areas of lentic ecosystems, and is generally associated with other algae. It is rare, and seldom collected. [3] It is probably cosmopolitan. [4]

Ecology

One species, Korshikoviella gracilipes is an epibiont on Daphnia pulicaria . K. gracilipes appears to have evolutionary adaptations to an epizoic lifestyles, such as timing zoospore and cyst formation with the molting process of Daphnia. [7]

Related Research Articles

<span class="mw-page-title-main">Chlorophyceae</span> Class of green algae

The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. They are usually green due to the dominance of pigments chlorophyll a and chlorophyll b. The chloroplast may be discoid, plate-like, reticulate, cup-shaped, spiral- or ribbon-shaped in different species. Most of the members have one or more storage bodies called pyrenoids located in the chloroplast. Pyrenoids contain protein besides starch. Some green algae may store food in the form of oil droplets. They usually have a cell wall made up of an inner layer of cellulose and outer layer of pectose.

<span class="mw-page-title-main">Selenastraceae</span> Family of algae

Selenastraceae is a family of green algae in the order Sphaeropleales. Members of this family are common components of the phytoplankton in freshwater habitats worldwide. A few species have been found in brackish and marine habitats, such as in the Baltic Sea.

<i>Ankistrodesmus</i> Genus of algae

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<i>Bracteacoccus</i> Genus of algae

Bracteacoccus is a genus of green algae, the sole genus of the family Bracteacoccaceae. It is a terrestrial alga commonly found in soils, from the tropics to the poles.

<i>Characium</i> Genus of algae

Characium is a genus of green algae in the family Characiaceae. It is very commonly found in freshwater habitats, where it is attached to phytoplankton or zooplankton.

Dictyochloris is a genus of green algae in the class Chlorophyceae. It is the sole genus of the family Dictyochloridaceae. It is commonly found in terrestrial and subaerial habitats.

<i>Kirchneriella</i> Genus of algae

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<i>Lagerheimia</i> Genus of algae

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<i>Schroederia</i> (alga) Genus of algae

Schroederia is a genus of green algae in the family Schroederiaceae. Schroederiaceae is a monotypic taxon; Schroederia is its only genus.

<i>Selenastrum</i> Genus of algae

Selenastrum is a genus of green algae in the family Selenastraceae. It is common in freshwater habitats around the world. Most species prefer temperate or warm-temperate waters.

<i>Tetraedron</i> Genus of algae

Tetraedron is a genus of green algae in the family Hydrodictyaceae. It may also be spelled as Tetraëdron.

<i>Trebouxia</i> Genus of algae

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<i>Actidesmium</i> Genus of algae

Actidesmium is a small genus of green algae in the family Characiaceae. It was described by the German phycologist Paul Friedrich Reinsch in 1875.

Deuterocharacium is a genus of green algae in the family Characiaceae. It is found in freshwater habitats, attached to algae or detritus. It is rare and has only been recorded from Europe.

<i>Marthea</i> Genus of algae

Marthea is a genus of green algae in the family Characiaceae, containing the single species Marthea tetras. It is an extremely rare genus; it has only been recorded once, as freshwater phytoplankton from its original locality in the Bohemian Forest region of the Czech Republic.

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Poloidion is a genus of green algae in the family Neochloridaceae, containing the single species Poloidion didymos. It is an extremely rare genus, which has only been recorded once on moist soil and rocks in Austria.

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References

  1. 1 2 3 4 Guiry, M.D.; Guiry, G.M. "Korshikoviella". AlgaeBase . World-wide electronic publication, National University of Ireland, Galway. Retrieved 2023-10-14.
  2. ↑ Burkhardt, Lotte (2022). Eine Enzyklopädie zu eponymischen Pflanzennamen [Encyclopedia of eponymic plant names](pdf) (in German). Berlin: Botanic Garden and Botanical Museum, Freie Universität Berlin. doi:10.3372/epolist2022. ISBN   978-3-946292-41-8. S2CID   246307410 . Retrieved January 27, 2022.
  3. 1 2 3 Bicudo, Carlos E. M.; Menezes, Mariângela (2006). Gêneros de Algas de Águas Continentais do Brasil: chave para identificação e descrições (2 ed.). RiMa Editora. p. 508. ISBN   857656064X.
  4. 1 2 D. M. John; Brian A. Whitton; Alan J. Brook, eds. (2002). The freshwater algal flora of the British Isles: an identification guide to freshwater and terrestrial algae. Cambridge University Press. ISBN   978-0-521-77051-4.
  5. ↑ Sánchez-Castillo, Pedro M. (1987). "Estudio del ciclo biológico de Korshikoviella gracilipes (Lambert) Silva (Chlorococcales, Chlorophyta)". Phycologia. 26 (4): 496–500. doi:10.2216/i0031-8884-26-4-496.1.
  6. ↑ Komárek, J.; Fott, B. (1983). Chlorophyceae (Grünalgen), Ordnung Chlorococcales. Das Phytoplankton des Süßwassers (in German). E. Schweizerbart'sche Verlagsbuchhandlung. p. 1044.
  7. ↑ Perez-Martinez, C.; Barea-Arco, J.; Sanchez-Castillo, P. (2001). "Dispersal and Colonization of the Epibiont Alga Korshikoviella gracilipes (Chlorophyceae) on Daphnia pulicaria (Cladocera)". Journal of Phycology. 37 (5): 724–730. doi:10.1046/j.1529-8817.2001.00180.x.
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