Mayorella

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Mayorella is a genus of small amoeboid protists in the phylum Amoebozoa. The genus consists of amoebae that exhibit pseudopodia and feed on a variety of organisms through phagocytosis, making them an important group in microbial ecology across most environments worldwide. Mayorella species have been found in soil, freshwater and marine environments.[2]

Etymology

Mayorella was named in the honor of Alfred G. Mayor, curator of natural sciences of the Brooklyn Institute of Arts and Sciences, the founder and first director of the Tortugas Marine Laboratory where the author of the genus, Asa Arthur Schaeffer [de], was working at the time of the genus' description in 1926.[3]

Characteristics and ecology

Mayorella amoebae use protoplasmic streaming for their movement and feeding. Like many other amoebae, they feed on bacteria, fungi and algae through phagocytosis. Their feeding promotes nutrient regeneration for the habitats, and regulates the populations of algae and bacteria. For this reason they are an important functional group in the ecology of worldwide microbial communities, for which they gain increasing recognition.[2]

Most species of Mayorella have been isolated from soil or freshwater environments, while a few have been reported from marine habitats, two of them from deep-sea areas.[2]

Classification

Taxonomic history

In 1926 the zoologist Asa Arthur Schaeffer [de] established the order Mayorella in the monotypic family Mayorellidae.[1] The taxonomic history of the genus was complex. Many amoebae had similar morphology to Mayorella had either a thick, multi-layered cell coat (or cuticle), or scales on the surface of the cell membrane. The zoologist Frederick C. Page created the genus Hollandella to gather all Mayorella-like species with cuticle, but the type species of this genus had scales instead of a cuticle, so the genus was abandoned. The species with scales were instead placed under the genus Dactylamoeba, which was later formally replaced with the name Korotnevella.[3]

The diversity of Mayorella-like amoebae is high, but the distinction between species of the genus is difficult and requires electron microscopy of the cell surface. Many species that were described by light microscopy are hardly recognizable and do not have reliable available descriptions.[3]

In 2004 it was placed in the order Dermamoebida, whose members are naked amoebae with a thick glycocalyx.[4]

Species

The genus Mayorella includes:

  1. Mayorella augusta Template:Au
  2. Mayorella bigemma Template:Au[5]
    = Amoeba bigemma Template:Au
  3. Mayorella cantabrigiensis Template:Au
  4. Mayorella dactylifera Template:Au
  5. Mayorella gemmifera Template:Au[6]
  6. Mayorella kuwaitensis Template:Au
    = Hollandella kuwaitensis Template:Au
  7. Mayorella marianaensis Template:Au[2]
  8. Mayorella palestinensis Template:Au[7]
  9. Mayorella penardi Template:Au
  10. Mayorella vespertilioides Template:Au
  11. Mayorella viridis Template:Au

References

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  1. ^ a b c Page Module:Citation/CS1/styles.css has no content.Asa Arthur Schaeffer (1926). "Taxonomy of the amebas: with descriptions of thirty-nine new marine and freshwater species". Papers from the Department of Marine Biology of the Carnegie Institution of Washington. Carnegie Institution of Washington.
  2. ^ a b c d e Page Module:Citation/CS1/styles.css has no content.Xiaoli Lei; Xiaojuan Chen; Jianming Chen; Chen Liang (June 2023). "A New Mayorella Species Isolated from the Mariana Trench Area (Pacific Ocean)". Protist. 174 (3) 125958. doi:10.1016/j.protis.2023.125958. PMID 37119544.
  3. ^ a b c Page Module:Citation/CS1/styles.css has no content.Anna Glotova; Natalya Bondarenko; Alexey Smirnov (2018). "High Genetic Diversity of Amoebae Belonging to the Genus Mayorella (Amoebozoa, Discosea, Dermamoebida) in Natural Habitats". Acta Protozoologica. 57 (1).
  4. ^ Page Module:Citation/CS1/styles.css has no content.Thomas Cavalier-Smith; Ema E.-Y. Chao; Brian Oates (2004). "Molecular phylogeny of Amoebozoa and the evolutionary significance of the unikont Phalansterium". European Journal of Protistology. 40 (1): 21–48. doi:10.1016/j.ejop.2003.10.001.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Asa Arthur Schaeffer (November 1928). "Nomenclatorial status of the amebas Mayorella bigemma and M. (?) dofleini". Science. 68 (1767): 454. Bibcode:1928Sci....68..454S. doi:10.1126/science.68.1767.454-a. PMID 17782085.
  6. ^ Page Module:Citation/CS1/styles.css has no content.Iva Dyková; Hana Pecková; Martin Kostka (2008). "Introduction of Mayorella gemmifera Schaeffer, 1926 into phylogenetic studies of Amoebozoa". Acta Protozoologica. 47 (3): 205–210.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Edelstein S, Lichtenstein N, Lasman M (1968). "Proteolytic Activity of the Amoeba Mayorella Palestinensis". Israel Journal of Chemistry. 6 (5): 797–802. doi:10.1002/ijch.196800097.

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