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FINE STRUCTURE OF PARAMOEBIDIUM (TRICHOMYCETES) AND A NEW SPECIES WITH VIRUSLIKE PARTICLES
Author(s) -
Dang SiNan,
Lichtwardt Robert W.
Publication year - 1979
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1979.tb06327.x
Subject(s) - biology , holdfast , sporangium , amoeba (genus) , botany , spore
The amoeba‐cyst cycle of Paramoebidium (Amoebidiales) is described as it develops in the rectum of its larval insect hosts and in the external aquatic environment. Numerous wall channels with associated vesicles aggregated at the apical end of the cystopores may allow rapid extrusion of holdfast material through the wall, in a manner resembling holdfast formation by sporangiospores of Amoebidium parasiticum . It is suggested that the cysts, in addition to their possible resistance to adverse environmental conditions, may function as timing devices to insure establishment of thalli in the proper location in the rectum. A new species is described, P. curvum Lichtwardt, which was found to contain polyhedral viruslike particles scattered in the cytoplasm.