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 Greslebin, A. G. Articles by Rajchenberg, M. Search for Related Content PubMed Articles by Greslebin, A. G. Articles by Rajchenberg, M. Agricola Articles by Greslebin, A. G. Articles by Rajchenberg, M.

Phytophthora species from declining Austrocedrus chilensis forests in Patagonia, Argentina

     Protección Forestal, Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), CC 14, 9200, Esquel, Chubut, Argentina

Everett M. Hansen
Loretta M. Winton

     Department of Botany and Plant Pathology, Oregon State University, Cordley Hall 2082, Corvallis, Oregon 97331-2902

Mario Rajchenberg

     Protección Forestal, Centro de Investigación y Extensión Forestal Andino Patagónico (CIEFAP), CC 14, 9200, Esquel, Chubut, Argentina

A survey of Phytophthora spp. in declining and healthy Austrocedrus chilensis forest was conducted to obtain an overview of the species that inhabit these forests. Seventeen declining and three healthy stands plus 11 associated streams were surveyed. Five Phytophthora species were recovered. P. syringae was the most common species isolated from soil and/or streams at nine declining sites and one healthy site. P. gonapodyides was isolated from streams only, at five declining sites. P. cambivora was isolated from soil and the undescribed taxa ‘P. taxon Pgchlamydo’ and 22 ‘P. taxon Raspberry’ were isolated from streams at one declining site each. The species were identified by ITS rDNA sequences and morphological features. Brief descriptions of each species and a discussion of their possible relationship with "mal del ciprés" are presented.

Key words: forest decline, "mal del ciprés", Oomycota, Pythiaceae, soil pathogens