Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Charles H. Walkinshaw
    Date: 1999
    Source: Paper presented at the Tenth Biennial Southern Silvicultural Research Conference, Shreveport, LA, February 16-16,1999.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (84 KB)

    Description

    Recycling tree root components is important in sustaining the productivity of southern pine forests. Death of outer cortical tissues and mortality of short roots is ubiquitous in conifers. Affected tissues lose their starch grains and accumulate secondary products, such as tannins. In this study, 10-year-old loblolly pine trees were cut at the soil surface and sequential samples of roots were collected, fixed, embedded, and sectioned for light microscopy at monthly intervals. Observations showed roots of felled trees were similar to those of standing controls for approximately 5 months. Indicators of cell and tissue death were the disappearance of starch grains, increased tannin accumulation, and decreased staining of nuclei. This pattern of changes was remarkably similar to that of dying cortical cells. The long period (5 months) after felling and before the roots die probably has a significant effect on root microflora and the distribution of nutrients from the decomposition of surface woody debris and root systems.

    Publication Notes

    • You may send email to pubrequest@fs.fed.us 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.

    Citation

    Walkinshaw, Charles H. 1999. Death of Root Tissues in Standing [Live] and Felled Loblolly Pines. Paper presented at the Tenth Biennial Southern Silvicultural Research Conference, Shreveport, LA, February 16-16,1999.

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/2132