Skip to Main Content
Mosaic Stunting in jack pine seedlings in a northern Michigan bareroot nurseryAuthor(s): Lynette Potvin; R. Kasten Dumroese; Martin F. Jurgensen; Dana Richter
Source: In: Riley, L. E.; Pinto, J. R.; Dumroese, R. K., tech. cords. National Proceedings: Forest and Conservation Nursery Associations-2009. Proc. RMRS-P-62. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 84-87.
Publication Series: Proceedings (P)
Station: Rocky Mountain Research Station
PDF: View PDF (218.92 KB)
DescriptionMosaic, or patchy, stunting of bareroot conifer seedlings is thought to be caused by deficiencies of mycorrhizal fungi following fumigation, resulting in reduced nutrient uptake, particularly phosphorus. Mosaic stunting of jack pine (Pinus banksiana) seedlings was observed in 2005 at the USDA Forest Service JW Toumey Nursery in Watersmeet, MI. We initiated a study to determine if either the species of mycorrhizal fungi or the quantity of mycorrhizae were different on stunted and healthy seedlings. In 2006 and 2007, we tested the soil, sampled root tips, and analyzed seedling growth and foliar nutrient concentrations. In 2006, we used DNA sequencing to identify mycorrhizal fungi. Our results showed four main fungal taxa (Sistotrema brinkmannii, Thelephora terrestris, Suillus luteus, and Laccaria spp.) were associated with mycorrhizal root tips on stunted and healthy seedlings, and that the number of mycorrhizal root tips was high on both types of seedlings, although we observed variation among stocktypes and years. Despite soils having similar nutrient concentrations, we observed differences in foliar concentrations between stunted and healthy seedlings. Only 1+0 seedlings in 2007, however, showed significant differences. This suggests that reduced root nutrient uptake was a factor in stunting of 1+0 seedlings in 2007, but does not appear to be related to ectomycorrhizal fungi.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- 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.
CitationPotvin, Lynette; Dumroese, R. Kasten; Jurgensen, Martin F.; Richter, Dana. 2010. Mosaic Stunting in jack pine seedlings in a northern Michigan bareroot nursery. In: Riley, L. E.; Pinto, J. R.; Dumroese, R. K., tech. cords. National Proceedings: Forest and Conservation Nursery Associations-2009. Proc. RMRS-P-62. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 84-87.
Keywordsectomycorrhizal fungi, foliar nutrients, bareroot, sawdust, organic matter, Sistotrema brinkmannii, Thelephora terrestris, Suillus luteus, Laccaria spp.
- Mosaic stunting in bareroot Pinus banksiana seedlings is unrelated to colonization by mycorrhizal fungi
- Interaction of an invasive bark beetle with a native forest pathogen: Potential effect of dwarf mistletoe on range expansion of mountain pine beetle in jack pine forests
- Effect of garlic mustard invasion on ectomycorrhizae in mature pine trees and pine seedlings
XML: View XML