{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/54867"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/54867","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"Fungi associated with the pistillate flowers of white oak (Quercus alba L.) and their effect on pollen germination","abstract":"Three genera of the Fungi Imperfecti (Alternaria, Cladosporium and Epicoccum) were isolated in high frequency from the pistillate flowers of white oak. These genera occur worldwide and although several species of each genera are parasitic on crop plants, they are primarily saprophytic in the forest ecosystem. Of the three genera, only Cladosporium is parasitic on Q. alba, causing a leaf mold. Several other genera of fungi were isolated in low frequency from the oak flowers. Included in this group were Penicillium, Pestalotia, Curvularia, Pyrenochaeta, Nigrospora and Fusarium. The effect of fungal spores on pollen germination was investigated. Suspensions of pollen grains and fungi spores were cultured in Van Tieghem cells. Pollen germination in vitro was significantly enhanced by Cladosporium and Epicoccum, but unaffected by Alternaria.","abstract_html":"Three genera of the Fungi Imperfecti (<u>Alternaria</u>, <u>Cladosporium</u> and <u>Epicoccum</u>) were isolated in high frequency from the pistillate flowers of white oak. These genera occur worldwide and although several species of each genera are parasitic on crop plants, they are primarily saprophytic in the forest ecosystem. Of the three genera, only <u>Cladosporium</u> is parasitic on <u>Q. alba</u>, causing a leaf mold. Several other genera of fungi were isolated in low frequency from the oak flowers. Included in this group were <u>Penicillium</u>, <u>Pestalotia</u>, <u>Curvularia</u>, <u>Pyrenochaeta</u>, <u>Nigrospora</u> and <u>Fusarium</u>. The effect of fungal spores on pollen germination was investigated. Suspensions of pollen grains and fungi spores were cultured in Van Tieghem cells. Pollen germination <u>in vitro</u> was significantly enhanced by <u>Cladosporium</u> and <u>Epicoccum</u>, but unaffected by <u>Alternaria</u>.","abstract_has_math":false,"creators":["Kolpak, Michael Xavier"],"institution":"Virginia Polytechnic Institute and State University","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Forestry and Forest Products","degree_department":"Forestry and Forest Products","school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1977,"date_issued":"1977","date_published":"1977","updated_at":"2026-07-22T22:20:16Z","subjects":[],"languages":["en_US"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10919/54867","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.department","label":"Department","values":["Forestry and Forest Products"]},{"key":"dc:creator","label":"Author","values":["Kolpak, Michael Xavier"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2015-07-28T20:42:18Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2015-07-28T20:42:18Z"]},{"key":"dc:date.issued","label":"Date","values":["1977"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Polytechnic Institute and State University"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.dcmitype","label":"Dc Type Dcmitype","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Forestry and Forest Products"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/54867"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Three genera of the Fungi Imperfecti (Alternaria, Cladosporium and Epicoccum) were isolated in high frequency from the pistillate flowers of white oak. These genera occur worldwide and although several species of each genera are parasitic on crop plants, they are primarily saprophytic in the forest ecosystem. Of the three genera, only Cladosporium is parasitic on Q. alba, causing a leaf mold. Several other genera of fungi were isolated in low frequency from the oak flowers. Included in this group were Penicillium, Pestalotia, Curvularia, Pyrenochaeta, Nigrospora and Fusarium. The effect of fungal spores on pollen germination was investigated. Suspensions of pollen grains and fungi spores were cultured in Van Tieghem cells. Pollen germination in vitro was significantly enhanced by Cladosporium and Epicoccum, but unaffected by Alternaria."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Fungi associated with the pistillate flowers of white oak (Quercus alba L.) and their effect on pollen germination"]}]}],"canonical_facts":{"dc:contributor.department":["Forestry and Forest Products"],"dc:creator":["Kolpak, Michael Xavier"],"dc:date.accessioned":["2015-07-28T20:42:18Z"],"dc:date.available":["2015-07-28T20:42:18Z"],"dc:date.issued":["1977"],"dc:description.abstract":["Three genera of the Fungi Imperfecti (Alternaria, Cladosporium and Epicoccum) were isolated in high frequency from the pistillate flowers of white oak. These genera occur worldwide and although several species of each genera are parasitic on crop plants, they are primarily saprophytic in the forest ecosystem. Of the three genera, only Cladosporium is parasitic on Q. alba, causing a leaf mold. Several other genera of fungi were isolated in low frequency from the oak flowers. Included in this group were Penicillium, Pestalotia, Curvularia, Pyrenochaeta, Nigrospora and Fusarium. The effect of fungal spores on pollen germination was investigated. Suspensions of pollen grains and fungi spores were cultured in Van Tieghem cells. Pollen germination in vitro was significantly enhanced by Cladosporium and Epicoccum, but unaffected by Alternaria."],"dc:description.degree":["Master of Science"],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["http://hdl.handle.net/10919/54867"],"dc:language.iso":["en_US"],"dc:publisher":["Virginia Polytechnic Institute and State University"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Fungi associated with the pistillate flowers of white oak (Quercus alba L.) and their effect on pollen germination"],"dc:type":["Thesis"],"dc:type.dcmitype":["Text"],"thesis:degree_discipline":["Forestry and Forest Products"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:20:16Z"}