Skip to Main Content
Virulence of Fusarium oxysporum and F. commune to Douglas-fir (Pseudotsuga menziesii) seedlingsAuthor(s): J. E. Stewart; Z. Abdo; R. K. Dumroese; N. B. Klopfenstein; M. -S. Kim
Source: Forest Pathology. 42: 220-228.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
Download Publication (712.0 KB)
DescriptionFusarium species can cause damping-off and root rot of young conifer seedlings, resulting in severe crop and economic losses in forest nurseries. Disease control within tree nurseries is difficult because of the inability to characterize and quantify Fusarium spp. populations with regard to disease potential because of high variability in isolate virulence. Fusarium isolates were collected from healthy and diseased seedlings of Douglas-fir (Pseudotsuga menziesii) and western white pine (Pinus monticola) from a nursery in Idaho, USA. Molecular markers such as DNA sequences (mitochondrial small subunit and nuclear translation elongation factor 1-alpha) and amplified fragment length polymorphism were used to identify isolates as either F. oxysporum or F. commune. In addition, diagnostic primers were developed to detect and distinguish F. commune from F. oxysporum. In vitro and greenhouse virulence tests were completed on Douglas-fir germinants and seedlings. For Douglasfir germinants and seedlings, F. oxysporum isolates generally caused less severe symptoms, whereas most F. commune isolates caused mortality through damping-off. This is the first report of direct evidence that F. commune can cause damping-off disease on Douglas-fir seedlings under greenhouse conditions.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- 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.
CitationStewart, J. E.; Abdo, Z.; Dumroese, R. K.; Klopfenstein, N. B.; Kim, M. -S. 2012. Virulence of Fusarium oxysporum and F. commune to Douglas-fir (Pseudotsuga menziesii) seedlings. Forest Pathology. 42: 220-228.
KeywordsFusarium, Douglas-fir, Pseudotsuga menziesii, seedlings
- Fusarium oxysporum protects Douglas-fir (Pseudotsuga menziesii) seedlings from root disease caused by Fusarium commune
- First report of Fusarium proliferatum causing Fusarium root disease on sugar pine (Pinus lambertiana) in a forest container nursery in California
- Molecular characterization of Fusarium oxysporum and fusarium commune isolates from a conifer nursery
XML: View XML