Life Sciences Commons^™

Evaluation Of Ecto-Mycorrhizae As A Determinant Of Chestnut Growth And Stress Response, Pabitra Aryal

Masters Theses

Although agriculture focuses on row crops throughout much of the Midwest, chestnut (Castanea spp.) appears to be an agroforestry crop well suited as a sustainable alternative to row crops in areas prone to erosion. As ectomycorrhizal (ECM) colonization is often crucial for tree establishment and production, I addressed the importance of ECM colonization on chestnut performance by assessing 1) natural ECM colonization in an established chestnut orchard and 2) the effect of experimental ECM inoculation on seedling establishment and drought response in a greenhouse. In the established orchard, I selected 50 Chinese-American hybrid chestnuts (C. mollisima x C. dentata …

Biological Species Concepts In Eastern North American Populations Of Lentinellus Ursinus, Andrew N. Miller

Masters Theses

As part of a biosystematic study of the Lentinellus ursinus species complex, field and herbarium specimens from North America, Central America, and Europe were examined. Single basidiospore isolates from basidiomata collected in Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Tennessee, North Carolina, Wisconsin, Costa Rica, and Austria were crossed in all possible combinations to determine the mating system operating in each population. All populations exhibited bifactorial or tetrapolar mating systems. Tester strains were then crossed to identify intercompatible populations and to determine if morphological species in the L. ursinus species complex are congruent with biological species. Three biological species were recognized …

A Biosystematic Study Of Three Plant Pathogenic Fungi, Richard James Langham

Masters Theses

Isolates of Chalara australis, Eucalypt Ceratocystis, and Ceratocystis virescens were grown on Potato Dextrose Agar, Malt Extract Agar, and Czapek Agar and examined as part of a biosystematic study on these fungi. Basic micromorphological and macromorphological data on the cultures were recorded and the taxa were found to be morphologically similar. Tissue isolates and single spore isolates were crossed within these taxa and an interspecific cross performed. Chalara australis was found to be either asexual or have only one mating type present in the cultures studied. Eucalypt Ceratocystis was found to have a mating system characteristic of bipolar …

A Biosystematic Study Of Panus Conchatus (Basidiomycetes; Agaricales), James Edward Johnson

Masters Theses

As part of a biosystematic study of Panus conchatus (Bull.: Fr.) Fr., North American and European herbarium specimens from the Field Museum and the University of Michigan were examined and a description of the taxon prepared. Tissue and single spore isolates were obtained from basidiocarps collected in Illinois. Single and polyspore isolates were obtained from a collection made in Switzerland by R. H. Petersen. Culture mat analyses were completed on several media and the taxonomic value of cultural characters assessed. Based on this study, the identification of somatic cultures by cultural characteristics is unlikely. Single spore isolates from the Illinois …

Filamentous Fungi Present In The External Mucus Of Gizzard Shad (Dorosoma Cepedianum), Kenneth C. Stetina

Masters Theses

The mucus layers of 30 gizzard shad (Dorosoma cepedianum) from the Lake Charleston side channel reservoir were sampled to identify what fungi or fungal spores were present. The fish sampled had a mean length of 171 mm, a mean weight of 41 g, and a mean age of 2.1 years. Hemp seed, fish scale, and polycell-gel substrates were examined, and four genera of fungi were identified. Fusarium was most frequently encountered, followed by Pythium, Allomyces, and Saprolegnia, respectively. Older fish (2.5 and 3.5 yrs) had a greater diversity of associated fungi than did younger fish (1.5 yrs), probably due to …

A Cytomorphological Study Of Podospora Curvicolla (Winter) Niessl, Stephen F. Tomasino

Masters Theses

A cytomorphological study was performed on Podospora curvicolla, a saprophytic Pyrenomycete. Major emphasis was placed on three important features: (I) ascocarp formation and development, (II) centrum structure and (III) ascus development and structure. A comparison with other studies of Podospora and with a genus generally considered closely related, Sordaria, was made to this present study of P. curvicolla.

Initial perithecial formation in P. curvicolla is indicated by a spherical mass of hyphae which may include filaments from many vegetative hyphae, but no apparent ascogonia or antheridia were observed. As the young perithecium matures in P. curvicolla, …

Cytology Of Chaetomidium Fimeti, David D. Kimmel

Masters Theses

No abstract provided.

The Morphology And Cytology Of Preussia Vulgare (Corda) Cain, Marcial Antonio Pastor-Corrales

Masters Theses

No abstract provided.

An Illustrated Guide For The Identification Of Genera And Species Of Filamentous Aquatic Phycomycetous Fungi From Illinois, Sharon Kay Reed

Masters Theses

No abstract provided.

A Taxonomic Study Of The Coprophilous Ascomycetes Of Southeastern Illinois, Alan Douglas Parker

Masters Theses

No abstract provided.

A Preliminary Survey Of The Filamentous Phycomycetes Found In The Embarras River, Coles County, Illinois, Lynne Overman

Masters Theses

No abstract provided.

Cytomorphology Of The Ascocarp Of Chaetomium Crispatum Fuckel, Sharon Lynne Brookman

Masters Theses

No abstract provided.

Cytomorphological Studies Of The Ascogenous Hyphae Of Four Species In The Genus Chaetomium, Burton M. Berkson

Masters Theses

No abstract provided.