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Studies of Paleozoic Fungi. III. Fungal Parasitism in a Pennsylvanian Gymnosperm

1984; Wiley; Volume: 71; Issue: 9 Linguagem: Inglês

10.2307/2443652

1537-2197

Sara P. Stubblefield, Thomas N. Taylor, Charles E. Miller, Garry T. Cole,

Plant and Fungal Species Descriptions

American Journal of BotanyVolume 71, Issue 9 p. 1275-1282 Article STUDIES OF PALEOZOIC FUNGI. III. FUNGAL PARASITISM IN A PENNSYLVANIAN GYMNOSPERM Sara P. Stubblefield, Sara P. Stubblefield Department of Botany, The Ohio State University, Columbus, Ohio, 43210Search for more papers by this authorThomas N. Taylor, Thomas N. Taylor Department of Botany, The Ohio State University, Columbus, Ohio, 43210Search for more papers by this authorCharles E. Miller, Charles E. Miller Department of Botany, Ohio University, Athens, Ohio, 45701Search for more papers by this authorGarry T. Cole, Garry T. Cole Department of Botany, University of Texas, Austin, Texas, 78712Search for more papers by this author Sara P. Stubblefield, Sara P. Stubblefield Department of Botany, The Ohio State University, Columbus, Ohio, 43210Search for more papers by this authorThomas N. Taylor, Thomas N. Taylor Department of Botany, The Ohio State University, Columbus, Ohio, 43210Search for more papers by this authorCharles E. Miller, Charles E. Miller Department of Botany, Ohio University, Athens, Ohio, 45701Search for more papers by this authorGarry T. Cole, Garry T. Cole Department of Botany, University of Texas, Austin, Texas, 78712Search for more papers by this author First published: 01 October 1984 https://doi.org/10.1002/j.1537-2197.1984.tb11983.xCitations: 9AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Evidence of fungal parasitism is found in the Pennsylvanian gymnospermous cone, Lasiostrobus polysacci Taylor. Indication of fungal activity is found in the outer cortical region of the axis of the cone and in the fleshy microsporophylls. Specimens exhibit severe tissue disruption, thick-walled, branched, septate hyphae, and possible reproductive structures. Parenchymatous cortical cells may also contain rounded bodies which are continuous with the cell wall. Similar structures are formed in many extant taxa in response to fungal invasion, and are termed wall appositions or callosities. Although their role in extant plants is disputed, they are clearly the product of a living host cell. Such spherical bodies, however, are not restricted to the cell periphery but in some cases occlude the cell lumen. In appearance they resemble resinous remains similar to those found in other coal ball plants. The blockage of entire cells or groups of cells may have served to retard hyphal growth or isolate infected cells. The occurrence of such structures in a Carboniferous plant provides the best evidence to date of parasitism during the Paleozoic. Citing Literature Volume71, Issue9October 1984Pages 1275-1282 RelatedInformation