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): T.A. Tousson; W. Menzinger; R.S. Smith
    Date: 1969
    Source: Phytopathology
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (2.0 MB)


    Water extracts of ponderosa pine, sugar pine, white fir, and coast redwood litter stimulated the germination of macroconidia and chlamydospores of Fusarium oxysporum. Germination of chlamydospores of F. oxysporum, F. oxysperum f. sp. vasinfectum, F. solani, and F. soiani f. sp. phaseoli was also enhanced in conifer soils, and reached 95 to 98%. When ponderosa litter extract was compared with 1% glucose and 2.5% asparagine solutions on chlamydospores of F. oxysporum in soil, greater germination was obtained with the litter extract. But in conifer soils, the germination generally resulted in the production of abnormal germ tubes that lysed rapidly before new chlamydospores were formed. It is postulated that germ tube lysis of such a large proportion of the population may account, in part, for the general absence of Fusarium spp. in conifer forest soils in California.

    Publication Notes

    • You may send email to 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.


    Tousson, T.A.; Menzinger, W.; Smith, R.S. 1969. Role of conifer litter in ecology of Fusarium: stimulation of germination in soil in conifer forest soils. Phytopathology. 59(10): 1396-1399.

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page