Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (409 KB)

Title: A paradigm shift for white pine blister rust: Non-Ribes alternate hosts for Cronartium ribicola in North America

Author: Zambino, Paul J.; Richardson, Bryce A.; McDonald, Geral I.; Klopfenstein, Ned B.; Kim, Mee-Sook.;

Date: 2007

Source: In: Guyon, J. C, comp. Proceedings of the Fifty-Third Western International Forest Disease Work Conference; 26-29 August 2005; Jackson, WY. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Region. p. 161-163.

Publication Series: Paper (invited, offered, keynote)

Description: Naturally occurring Cronartium ribicola infections were discovered in August and September, 2004 on Pedicularis racemosa and Castilleja miniata in a mixed stand of white pine blister rust-infected whitebark pine (Pinus albicaulis) and western white pine (P. monticola) in northern Idaho, at Roman Nose Lakes, ca 30 km west of Bonners Ferry. Infections were confirmed by ITS rDNA sequencing of teliospores. The ability of these species to act as host was confirmed by laboratory inoculations using aeciospores from whitebark pine. Isolates recovered from P. racemosa after artificial inoculations were able to infect Ribes nigrum and were thus not specific to an alternate host genus, and also infected western white pine seedlings. Cronartium ribicola was detected on additional P. racemosa and C. miniata at the site in 2005. Infections were confirmed by ITS sequencing and transfer to R. nigrum. In 2005, exposure of local plants to local inoculum at a second site, ca 200 km to the south, caused infections on P. racemosa, and laboratory inoculations implicated C. rhexifolia from this site as a third non-Ribes alternate host. Identification of these alternate hosts may significantly alter our concepts of blister-rust hazard and epidemiology, particularly for those upper montane to subalpine stands where the newly identified hosts are abundant. The use of these hosts by the introduced pathogen also raises the possibility that fungal adaptation may be one factor allowing change in this dynamic and evolving pathosystem.

Keywords: Cronartium ribicola, Ribes, white pine blister rust

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • You may send email to rmrspubrequest@fs.fed.us to request a hard copy of this publication. (Please specify exactly which publication you are requesting and your mailing address.)

XML: View XML

Citation:


Zambino, Paul J.; Richardson, Bryce A.; McDonald, Geral I.; Klopfenstein, Ned B.; Kim, Mee-Sook. 2007. A paradigm shift for white pine blister rust: Non-Ribes alternate hosts for Cronartium ribicola in North America. In: Guyon, J. C, comp. Proceedings of the Fifty-Third Western International Forest Disease Work Conference; 26-29 August 2005; Jackson, WY. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Region. p. 161-163.

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.