1985 - Mycological Society of America
1985 - Mycological Society of America
1985 - Mycological Society of America
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20<br />
for the first time with hypogeous Basidiomycota in<br />
the genera Alpova, Cautieria, Leucogaster,<br />
Leucophleps, Mycolevis, Radiigera and Ascomycotina<br />
in the genus Ceopora. These combinations gave<br />
positive results: Alpova trappei Fogel with<br />
Douglas-f ir, lodgepole pine, and Sitka spruce ;<br />
Gautieria monticola Harkn. and g. crispa Stewart L<br />
Trappe with lodgepole pine and Douglas-fir or Sitka<br />
spruce, respectively; Cautieria otthii Trog. with<br />
lodgepole pine and Sitka spruce; Geopora cooperi<br />
Harkn. and Leucogaster rubescens Zeller h Dodge<br />
only with Douglas-fir; Leucophleps spinispora Fogel<br />
and Mycolevis Sicci~leba Smith with Douglas-fir,<br />
~p ~-<br />
lodgepole pine, ponderosa pine, and western<br />
hemlock; Radiigera fuscoaleba Zeller only with<br />
western hemlock. In addition, Boletus mirabilis<br />
Murr., a lignicolous agaric, and Lycoperdon<br />
pyriforme Pers., a <strong>of</strong>ten lignicolous true puffball,<br />
formed mycorrhizae with western hemlock. The<br />
relationship <strong>of</strong> these results to the ecology <strong>of</strong><br />
these taxa is discussed.<br />
Cavender, J. C., see Hammer C. A.<br />
T.E. CHASE and R.C. ULLRICH. Botany Dept., University<br />
-- <strong>of</strong> Vermont, Burlington, VT 05405. Genetics <strong>of</strong> intersterility<br />
in Heterobasidion annosum.<br />
Our mating studies using a world-wide collection <strong>of</strong><br />
strains <strong>of</strong> this root-rotting basidiomycete provide<br />
data on the genetic system determining intersterile<br />
groups (i.e., biological, species). We have identified<br />
five intersterility (IS) genes. The IS genes and alleles<br />
are designated: VI+/Vl-, Vz+/VZ-, V3+/V3-, St/<br />
S-, and P+/P-. To be interfertile, two homokaryons<br />
must each carry a + allele for the same IS gene (e.g.,<br />
in the case <strong>of</strong> V1+ VZ- V3- S+ P- x Vl- V2- L13+ S+ P-<br />
the two are interfertile by virtue <strong>of</strong> St. Homozygosity<br />
for the positive alleles <strong>of</strong> any IS gene suffices<br />
and negative alleles do not affect the positive interaction.<br />
These IS genes function to determine intersterility<br />
and interfertility independently <strong>of</strong> incompatibility<br />
(i.e., mating type) alleles. Therefore,<br />
within interfertile groups, compatible homokaryons<br />
must be heterozygous for incompatibility alleles<br />
(e.g., A1 x A?). Many <strong>of</strong> the first isolates studied<br />
from nature carry - alleles for all V genes and are<br />
either S+/P- or S-/P+. Consequently, the IS' and 'PI<br />
intersterile groups were recognized first. The V<br />
genes were implicated subsequently when samples were<br />
increased. Our conclusions are based on analyses <strong>of</strong><br />
crosses involving progeny from naturally-occurring<br />
isolates and interfertile crosses. These data provide<br />
the first model for the genetic basis <strong>of</strong> intersterility<br />
and speciation in higher fungi.<br />
Choi, H. T., see Ross, I. K., et. al.<br />
Chung, W. C., see Setliff, E. C.<br />
W. G. CIBULA and C. L. OVREBO. Earth Resources Laboratory,<br />
NASA, NSTL Station, MS 39529 and Matthaei<br />
Botanical Gardens, The University <strong>of</strong> Michigan, Ann<br />
Arbor, MI 48105. Diversity and distribution <strong>of</strong><br />
mycorrhizal basidiomycetes in two Pinus taeda plots<br />
in Mississippi.<br />
Mycorrhizal basidiomycetes were inventoried in 2<br />
plots <strong>of</strong> Pinus taeda on a weekly basis in 1974-1975,<br />
1975-76 and 1983-84. The 120 x 120 foot plots have<br />
25 year old trees at 10 foot spacings, resulting in<br />
144 subplots. The two plots differ with seedlings<br />
<strong>of</strong> one having received a single dose <strong>of</strong> N-P-K<br />
fertilizer at the age <strong>of</strong> one year. The total wood<br />
volume today in the fertilized plot is twice that<br />
<strong>of</strong> the unfertilized plot. A greater diversity <strong>of</strong><br />
fungi and a greater number <strong>of</strong> sporophores occurred in<br />
the fertilized plot during each sampling period.<br />
Collection data from each subplot have been entered<br />
into a computer in such a manner that the spatial<br />
distribution <strong>of</strong> sporophore production for each<br />
species on each collectiondate, along with seasonal<br />
or yearly sums, has been preserved. These sum files<br />
were subjected to various statistical tests, such as<br />
the Pearson r correlation coefficient, for further<br />
analysis. Species showing good spatial correlations<br />
between seasons include Cortinarius semisanguineus,<br />
Suillus decipiens and Tricholoma flavovirens.<br />
Also,.an algorithm has been developed to calculate<br />
the relationship between the species in a specific<br />
subplot with all other species within the subplot.<br />
Differences in aircraft radiometric remote sensor<br />
values between 0.4 & 2.5 pm correlate well with the<br />
differences in mycorrhizal involvement demonstrated<br />
by the observed field data.<br />
W. G. CIBULA, D. P. LEWIS and N. S. WEBER.<br />
m~r/~RL,at'l. Space Tech. Lab., NSTL, MS<br />
39529; Temple-Eastex, Evadale TX 77615;<br />
Herbarium, Univ. <strong>of</strong> Mich., Ann Arbor, MI<br />
48109. Observations on the boletes <strong>of</strong> the<br />
Gulf Coast region.<br />
The diversity <strong>of</strong> boletes in southeastern<br />
North <strong>America</strong> is perhaps the greatest on the<br />
continent. These mycorrhizal fungi include a<br />
number <strong>of</strong> species which are seldom<br />
encountered in other regions <strong>of</strong> North<br />
<strong>America</strong>. Some elements <strong>of</strong> the bolete flora<br />
such as Boletellus ananus occur elsewhere in<br />
tropical regions, particularly the Asian<br />
tropics. Other species such as Boletus<br />
catervatus, described from the Asian tropics,<br />
have been found on the Gulf Coast. Species<br />
diversity in Suillus and Leccinum appears to<br />
be lower in the Coastal Plain than elswhere<br />
in North <strong>America</strong> while that <strong>of</strong> Tylopilus,<br />
Strobilomyces, and Boletus seems to be<br />
greater.<br />
Clark, J., see Hu, F.-S, et. al. -<br />
Clark, J., see Hu, F.-S.<br />
- K.W. OOCHRAN. Departments <strong>of</strong> Epidemiology and <strong>of</strong><br />
~rmacology, University <strong>of</strong> Michigan, Ann Arbor, M I<br />
48109, and NAMA Committee. Cases reported to the<br />
NAMA Mushroan Poisoning Case Registry in 1984.<br />
In 1984 the Registry received 61 reports involving<br />
87 cases, sane involving earlier events. Most cases<br />
(87%) involved mushrcuns ingested for fccd; 8% for<br />
non-nutritional recreation; 5% accidently by<br />
children Eight cases involved unknown s~ecies: 6<br />
cases, mixed species - all Amanita. ~hlo~o~hyllun<br />
mol Mites was the most frequently reported species<br />
&followed<br />
by Annillaria mellea, 6; mnita<br />
pantherina and Collybia acervata, 4; Amanita<br />
muscaria and Leucoagaricus naucinus, 3. TWO fatal<br />
cases involved Amanita bisporigera and Psi locybe<br />
cubensis, the latter anaphylactically. With the<br />
newly reported cases, 2 or more incidents have now<br />
been reported to the Registry for the following<br />
species (syrnptams for all were gastrointestinal and<br />
as noted): Amanita muscaria, 5 -2 with very viscous<br />
mucus, 1 each ha1 lucination and unconscious; A.<br />
virosa 4; millaria mellea, 6; Collybia acervatya<br />
-I