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United States Department of Agriculture

Agricultural Research Service

Title: Comparative Sporulation of Dematiaceous Hypomycetes on Agar Media and Its Enhancement by Growth of Cellulose Substrates

item Pratt, Robert

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: May 1, 2003
Publication Date: May 1, 2003
Citation: Pratt, R.G. 2004. Comparative sporulation of dematiaceous hypomycetes on agar media and its enhancement by growth of cellulose substrates [abstract]. Phytopathology 93 (Supplement):S72.

Technical Abstract: Asexual sporulation by nine species of Bipolaris, Curvularia, Exserohilum, and Drechslera from bermudagrass and ryegrass, three isolates per species, ranged from profuse to nonexistent on potato dextrose agar, cornmeal agar, and Bilay's medium. Sporulation usually was greatest with species that form relatively small conidia (C. lunata, B. spicifera, B. hawaiiensis) and least with species that form relatively large conidia (B. stenospila, E. rostratum, D. dictyoides). Sporulation by all species on cornmeal agar was enhanced by addition of one or more cellulose substrates that included index cards, filter paper, cotton cloth, and cheesecloth. Growth on index cards and filter paper usually promoted greatest increases in sporulation. Enhancement of sporulation by dematiaceous hyphomycetes, by their growth on cellulose substrates, may assist in production of conidial inoculum and in the identification and quantitative estimation of populations of these fungi from subterranean plant tissues and soil.

Last Modified: 4/21/2015
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