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Title: REDEFINITION OF THE GENUS CRYPTOSPORELLA (GNOMONIACEAE)

Author
item Mejia, Luis
item Castlebury, Lisa
item Rossman, Amy
item White, James

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 6/17/2006
Publication Date: 7/26/2006
Citation: Mejia, L.C., Castlebury, L.A., Rossman, A.Y., White, J. F. 2006. Redefinition of the genus Cryptosporella (Gnomoniaceae). [Abstract]. 8th International Mycological Congress, Cairns, Australia, Abstracts Book 1, p. 69.

Interpretive Summary:

Technical Abstract: A recent phylogeny of the family Gnomoniaceae placed the type species of the genus Cryptosporella Sacc (C. hypodermia (Fr.) Sacc) in a single clade with the type species of the genus Ophiovalsa Petrak ( O. suffusa (Fr.) Petrak). Species belonging to this clade have been considered to be pathogens, endophytes and saprobes on stems and branches of trees, mainly from the Betulaceae and Ulmaceae. Several nomenclatural issues are associated with determining the correct generic name for this clade. In addition, Winterella (O Kuntze) J. Reid & Booth has been considered a synonym of Ophiovalsa. In this work we: 1) track the literature pertinent to the taxonomy of the species reported within these genera in order to assign a correct generic name; 2) compare the morphology and cultural characteristics of species falling within this clade; and 3) analyze DNA sequences of ribosomal and RPB2 gene regions to define this genus and the relationships of its species. A review of the literature demonstrates that the genus name deserving priority for species belonging in this clade is Cryptosporella Sacc. Our preliminary results indicate that shape and size of ascospores and cultural characteristics are useful for differentiating species within this genus. A redefinition of the genus based on molecular and morphological characters is presented and results in the need for at least five newly combined species epithets in Cryptosporella.