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A new species of aplanosporic Haptoglossa, H. beakesii, with vesiculate spore release

journal contribution
posted on 2023-06-08, 09:01 authored by S L Glockling, Louise SerpellLouise Serpell
A new species of Haptoglossa, Haptoglossa beakesii sp. nov., a nematode parasite found in a sample of compost and rabbit dung at the University of Sussex campus, is described. The species, which infects nematodes of the genus Rhabditis, is unusual because it releases non-motile spores into a retaining vesicle. Aspects of the development and reproduction of the species are illustrated with light microscopy and transmission electron microscopy (TEM). TEM revealed a typical multinucleate thallus which cleaved into un-walled aplanospore initials. Each aplanospore contained a central nucleus closely surrounded by mitochondria and with peripheral dense body vesicles (DBV) and distinctive, layered, encystment vesicles. Aplanospores were expelled into a fine vesicle which later broke down to release cysts. Cysts germinated to produce infective gun cells.

History

Publication status

  • Published

Journal

Botany

ISSN

1916-2790

Issue

1

Volume

88

Page range

93-101

Department affiliated with

  • Biochemistry Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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