A taxonomic study of the genus Gautieria Vitt. is presented.
Existing type collections were re-examined, fully described and
figures. Twenty-six species are recognized. Two provisional subgenera
are proposed: Gautieria and Clelandia. Within the subgenus
Gautieria, two provisional sections are proposed: Gautieria and
Trappea. G. morchellaeformis var. globospora, and
G. morchellaeformis...
Three provisional species are described as new: Leucogaster
couchii, L. gelatinosus, and L. microsporus. Leucophlebs candida
is transferred to Leucogastef, completing the transfer of all
Leucophlebs species to Leucogaster. L. columellatus is transferred
to Sclerogaster. L. longisterigmatus is synonymized with
L. rubescens, L. foveolatus with L. odoratus, and L. fulvimaculatus...
Kinetics of cell division in the intestinal epithelial proliferative cells (cell nests) of the rough-skinned newt, Taricha granulosa, were studied using tritiated thymidine autoradiography and the mitotic arresting properties of colcemid. Percent labeled mitoses (PLM) curves were drawn from the autoradiographic data from two separate experiments in which the newts...
Four isolates of Glomus mosseae, collected from diverse
geographic locations, were pot cultured on varied host plants or
stored in the same soil as collected. Spores of three isolates failed
to germinate on any of five agar media while the fourth germinated
well on all media. Lack of germination on...
Results from approximately 400 fungus-host pure culture
inoculations indicate that specificity of ectomycorrhizal associations
is a complex phenomenon and cannot be based solely on field observations
of sporocarp-host associations. Of the numerous sporocarp-host
specific fungi tested, most formed ectomycorrhizae with one or more
unexpected, non-associated hosts. These results conclusively demonstrate...
Two objectives of this research were to identify fungi which are
mycorrhizal with western hemlock and to examine the ecology of hemlock
mycorrhizal fungi indigenous to outplanting sites. Another objective
was to evaluate the effectiveness of mycorrhizal inoculation in
improving the performance of outplanted hemlock seedlings.
A list of over...
Mycorrhizal fungi are important in food production of arid lands.
The desert truffles not only form a symbiotic association with range
plants but also form fruiting bodies which are both prized as food and
nutritious. The taxonomy and ecology of two genera of desert truffles
are treated in this thesis....
Inoculations of white fir, Shasta red fir, Douglas fir and
ponderosa pine with Pisolithus tinctorius spores when outplanted
failed to produce P. tinctorius mycorrhizae at the end of the first
growing season. In the third year a few P. tinctorius mycorrhizae
were formed on white fir. Inoculations reduced seedling survival...
In vitro growth of twelve isolates of Tither spp., the true truffles, was quantified by an agar-melt procedure. All isolates grew
poorly on media commonly used for the culture of mycorrhizal fungi, but responded markedly to the addition of nitrate, as well as other
inorganic ions, to malt and potato-dextrose...