Eight primary ambrosia fungi, Raffaelea canadensis, R.
sulcati, Ambrosiella brunnea, A. ferruginea, A. gnathotrichi, A.
hartigii, A. sulcati, and A. sulphurea (Fungi Imperfecti), were found
in association with 11 ambrosia beetle species (Scolytidae and Platypodidae).
The fungi are reported from new beetle symbionts, new
tree hosts, and/or increased geographical distribution....
Endophytes, foliage inhabiting fungi, are an unexplored source of fungal biodiversity and a potential resource for the production of bioactive natural products. In this research, leaf tissues from the species Arbutus menziesii, Rhododendron macrophyllum and the genus, Ilex and Salix were collected for the isolation of endophytic fungi. Fungal extracts...
"Moulds are minute vegetable organisms, without
chlorophyll, threadlike in structure, and reproduced
by spores.
The general appearance is a dense felt-like mass
of white threads, at first soft and fluffy, and when
fruiting are covered with blue, green, yellow, black or
brown spores. The threads are very small, some just...
The species composition of soil microfungal populations in-adjacent
stands of red alder, conifers, and mixed alder conifer correlated
strongly with the dominant vascular vegetation. A total of 92
species were isolated: 55 from the alder stand; 45 from the conifers;
and 46 from the mixed alder-conifer, with few species (16,...
The free amino acid content of the intracellular pools in higher
marine fungi was determined by thin-layer and gas-liquid chromatography.
The organisms investigated include:
Ascomycetes; Nais inornata, Leptosphaeria oraemaris, Corollospora
maritima, Haligena elaterophora, Halosphaeria mediosetigera, Halosphaeria
appendiculata, Halosphaeria quadriremis, Lignincola Laervis
and Remispora hamata, and Fungi Imperfecti; Zalerion maritimum and...
The thermophilic fungus Chaetomium thermophile was shown to contain three major β-glucosidases, a cell-bound cellobiase, a cellbound aryl-β-glucosidase and an extracellular aryl-β-glucosidase. The enzymes were partially purified and studied with respect to thermal stability and certain kinetic parameters. Two of the β-glucosidases are fairly stable at the maximum growth temperature...
Phyllopane microorganisms on the leaf surfaces of bean
(Phaseolus vulgaris L. ), hop (Humulus lupulus L. 'Fuggle-H'),
mint (Mentha piperita L. 'Mitcham') and tomato (Lycopersicon
esculentum Mill. ) has been observed by cultural methods. A leaf
impression method was used to examine both actively growing and
inactive propagules present on...
The mycosporins, formerly called P310's are secondary metabolites
of fungi closely associated with fungal reproductive processes that
require light. The structurally related iminomycosporins are found in
marine plants and animals and may also have functions related to
light. In this study, approaches toward the asymmetric synthesis of
the mycosporins are...
Tests were conducted to evaluate efficacy of dry heat (82.2°C for 10, 20, and 60 minutes) to reduce colonization by selected fungi within styroblock containers and residual seedling roots left in containers after seedling extraction. Dry heat alone was generally ineffective in significantly reducing fungal colonization. However, simply wetting container...
The chlamydospore is a survival spore produced by 35 of the 75 described species of Phytophthora. Phytophthora ramorum Werres, de Cock & Man in't Veld, the causal agent of Sudden Oak Death (SOD), produces abundant chlamydospores in artificial culture and plant tissue. The chlamydospore is likely the most important survival...
Natural products from plants, bacteria, and fungi play an important role in society. Over the last 35 years, natural products and their derivatives have inspired over 60% of all FDA approved small-molecule drugs, and are among the top prescribed therapeutics.1-2 Fleming’s discovery of the fungal antibiotic penicillin started the “Golden...
The mold resistance of fiberboard has been studied to provide a basis for recommendations on the relative merits of various types of commercial and of experimental fiberboards. The experimental fiberboards were prepared. by the Division of Pulp and, Paper of the Forest Products Laboratory.