This Article Full Text Full Text (PDF) Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Farr, D. F. Articles by Rossman, A. Y. Search for Related Content PubMed Articles by Farr, D. F. Articles by Rossman, A. Y. Agricola Articles by Farr, D. F. Articles by Rossman, A. Y.

Morphological and molecular characterization of Phomopsis vaccinii and additional isolates of Phomopsis from blueberry and cranberry in the eastern United States

     Systematic Botany and Mycology Laboratory, USDA, Agricultural Research Service, Beltsville, Maryland 20705-2350

Forty isolates of Phomopsis were obtained from twigs and berries of highbush blueberry, Vaccinium corymbosum, and cranberry, Vaccinium macrocarpon, isolated primarily from plants grown in the eastern United States. They were characterized using conidiomatal morphology, conidial dimensions, colony appearance and growth rate, and sequences of ITS rDNA. Based on morphological and molecular similarities, most isolates grouped together with an authentic culture of Phomopsis vaccinii Shear. This taxon is described and illustrated. However, some Phomopsis isolates from Vaccinium differed in colony and conidiomatal morphology from P. vaccinii and, based on ITS sequences, were related to isolates of Phomopsis from diverse hosts. These isolates were excluded from P. vaccinii.

Key words: coelomycetes, cultural characteristics, Diaporthe, dieback, Ericaceae, fungi, ITS, pycnidia, Vaccinium corymbosum, Vaccinium macrocarpon