A temporary flagellate (mastigote) stage in the vahlkampfiid amoeba Willaertia magna and its possible evolutionary significance.

  title={A temporary flagellate (mastigote) stage in the vahlkampfiid amoeba Willaertia magna and its possible evolutionary significance.},
  author={B S Robinson and Peter Christy and Johan F. de Jonckheere},
  journal={Bio Systems},
  volume={23 1},
Low Genetic Diversity In Willaertia Magna From Wide Geographical Sources, and Characterisation of Willaertia Minor N. Sp. (Heterolobosea, Vahlkampfidae)
Cysts and trophozoites are more readily mistaken for Naegleria, but lack perinuclear granules, as do the mature cysts of W. magna, and an additional isolate assigned to Willaertia by features of its flagellate and cyst stages represents a new species.
Investigation of potential pathogenicity of Willaertia magna by investigating the transfer of bacteria pathogenicity genes into its genome
The genomic repertory for the first draft genome of genus Willaertia is explored and genomic data is provided for further comparative studies on virulence of related pathogenic amoeba, N. fowleri, to provide a better understanding of the W. magna genome.
Naegleria: A Research Partner For Cell and Developmental Biology 1
This essay reviews research opportunities for which Naegleria excels, as well as interesting aspects of its biology that provide challenges for future investigations.
Intracellular Behaviour of Three Legionella pneumophila Strains within Three Amoeba Strains, Including Willaertia magna C2c Maky
Results support the idea that W. magna C2c Maky possesses unique behaviour in regard to L. pneumophila strains, and none of the three legionella strains exhibit intracellular growth.


Studies on Amebo‐flagellates, I. The General Morphology and Mastigonts of Trimastigamoeba philippinensis Whitmore 1911
It is concluded that the organism is generically and specifically distinct; and while its name is erroneously descriptive of its flagellate phase, it is taxonomically valid.
Ultrastructure of the amoeboflagellate Tetramitus rostratus.
The life-cycle of the amoeboflagellate Tetramitus rostratus includes amoeboid, cyst, and flagellate stages. The ultrastructure of these three stages is illustrated, with particular emphasis on
Ultrastructure of Naegleria fowleri enflagellation
Electron microscopic examination of N. fowleri confirmed that it is a typical eucaryotic protist with a distinct nuclear envelope and prominent nucleolus, numerous vacuoles and cytoplasmic inclusions, pleomorphic mitochondria, and some rough endoplasmic reticulum.
The pathogenic amoeboflagellate Naegleria fowleri: environmental isolations, competitors, ecologic interactions, and the flagellate-empty habitat hypothesis.
  • J. L. Griffin
  • Environmental Science, Biology
    The Journal of protozoology
  • 1983
From several surveys of environmental sites, the virulent human pathogen, Naegleria fowleri, was isolated from a pond in Georgia, a sewage treatment plant in Missouri, and from the Potomac and
Programmed synthesis of tubulin for the flagella that develop during cell differentiation in Naegleria gruberi.
  • J. D. Kowit, C. Fulton
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1974
Experiments demonstrate that most if not all of the flagellar tubulin is synthesized de novo during differentiation, before any morphological change had occurred.
srRNA evolution and phylogenetic relationships of the genus Naegleria (Protista: Rhizopoda).
It was shown that the semiconserved regions of the srRNA molecule evolve in a clocklike fashion and that the clock is time dependent rather than generation dependent.
First evidence for diploidy and genetic recombination in free-living amoebae of the genus naegleria on the basis of electrophoretic variation.
Electrophoretic variation for 15 enzyme-coding genes was studied in various Naegleria species and the occurrence of complex banding patterns provided the first evidence of a diploid structure of the genome of these amoebae.
Ecology of Protozoa: The Biology of Free-living Phagotrophic Protists
This book is written for ecologists and protozoologists. Ecologists who study environments and biotic communities in which protozoa are im ponant should find this book especially useful. During the
Small-subunit ribosomal RNA sequence from Naegleria gruberi supports the polyphyletic origin of amoebas.
A phylogenetic tree is constructed that supports the suggested polyphyletic origin of amoebas and suggests a flagellate ancestry for Naegleria.
Two new monotypie genera (Kizakimonas bogoriensis and Hoehne mastix saopaulensis) and six other new species (four in Tetramitus and two in Balliamonas) of colourless flagellates are described based