Experiment Station Record, Volume 93, July-December, 1945 Page: 18
xiii, 941 p. ; 24 cm.View a full description of this book.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
18 EXPERIIVENT STATION RECORD [Vol. 93
Investigation into the production of bacteriostatic substances by fungi.--V,
Preliminary examination of the third 100 fungi, with special reference to strain
variation among species of Aspergillus, W. H. WILKINS and G. C. M. HARRIS
(Brit. Mycol. Soc. Trans., 27 (1945), pt. 3-4, pp. 113-118).--During these studies
(E. S. R., 88, p. 601.; 90, pp. 596, 737; 92, p. 626) the authors were increasingly impressed
with the importance of regarding every isolation as an individual fungus
whose physiological potentialities were probably quite distinct from other isolations/strains
of the same species. This was found true not only for Aspergillus
Vpp., since the concentration of crude "claviformin" also varied greatly in. relation
to the different strains of Penicillium claviforme used; definite strain variation
was also found from strongly positive to, strongly negative in the larger basidiomycetes
investigated. As the medium on which the fungus is grown in the
laboratory is responsible for so much variation in results, it may well be that the
substrate of the natural environment is also a factor in determining the subsequent
reactions of the strain when isolated and grown in culture. Though direct evidence
is lacking, the authors incline strongly to this view.
Investigation into the production of bacteriostatic substances by fungi.-VI,
Examination of the larger Basidiomycetes, W. H. WILKINS and G. C. M.
HARRIS (Ann. Aplp. Biol., 31 (1944), No. 4. pp. 261-270).-The results of testing
some 700 species are presented. Initially, the juice extracted from the sporophore
was tested, followed in certain cases by a test of the metabolism solution produced
by the fungus in culture. The findings indicate the larger Basidiomycetes to be
among the more promising fungus groups which produce antibiotics, comparing
favorably in this respect with species of Aspergillus and Penicillium. Of the 700,
about 70 were strongly and about 100 weakly positive against Staphylococcus
aureus and/or Bacterium coli.
The production of an antibiotic substance similar to penicillin by pathogenic
fungi (dermatophytes), S. M. PECK and W. L. HEWITT (Pub. Health Rpts. [U.
S.], 60 (1945), No. 6, pp. 148-153, ills. 1).-This factor appeared to be similar to
penicillin in its enhanced production in.corn-steep liquor media, spectrum of activity
and behavior toward penicillin-resistant organisms, sensitivity to pH and
temperature, and destruction by clarase.
Sterility test for penicillin employing cysteine for inactivation, R. J. HICKEY
(Science, 101' (1945), No. 2618, pp. 232-234).
Notes on Florida fungi, III, E. WEST. (Fla. Expt. Sta.). (Mycologia, 37
(1945), No. 1, pp. 65-79, illus. 2).-Notes are included on 35 species, including many
rust, smut, and other plant-parasitic fungi, with 3 species described as new
(E. S. R., 85, p. 171).
Developmental studies in the fungi.-I, The foot-cell in Aspergillus clavatus
Desm., R. KLEIN (Brit. Mycol. Soc. Trans., 27 (1945), pt. 3-4, pp. 121-130, illus.
19).-As part of an investigation into the formation of the conidiophore in the
genus Aspergillus, a careful study was made of A. clavatus. Sufficient stages were
found to allow a reconstruction of the process in this species, though the results
of course may not apply to the whole genus; the detailed findings are presented
and illustrated.
Notes on the Geoglossaceae of Bermuda, J. M. WATERSTON, J. W. SINDEN, and
H. H. WHETZEL. (Cornell Univ. et al.). (Mycologia, 37 (1945), No. 1, pp. 32-36,
illus. 1).-Notes on species of the fungus genera Trichoglossum, Geoglossum, and
Mitrula, with a description of M. bermudiana n. sp.
Mold preventive for book bindings, D. C. HETHERINGTON (Science, 101 (1945),
No. 2618, p. 223).-Success is reported with a solution made up of thymol crystals
10 gm., HgC12 4 gm., ether 200 cc., and benzene 400 cc. Since it is both poisonous
and flammable, care must be used in applying it.
Upcoming Pages
Here’s what’s next.
Search Inside
This book can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Book.
U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations. Experiment Station Record, Volume 93, July-December, 1945, book, 1947; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5063/m1/31/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.