Pathogenicity of Leptographium Species Associated with Loblolly Pine Decline

L. G. Eckhardt; J. P. Jones; Kier D. Klepzig

Treesearch

Pathogenicity of Leptographium Species Associated with Loblolly Pine Decline

Informally Refereed

Authors:

L. G. Eckhardt, J. P. Jones, Kier D. Klepzig

Year:

2004

Type:

Scientific Journal

Station:

Southern Research Station

Source:

Plant Dis. 88:1174-1178

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Abstract

Freshly lifted seedlings and 21-year-old trees of loblolly pine were wound-inoculated with Leptographium species recovered from the soil and/or roots of trees with loblolly decline symptoms in central Alabama. Seedlings inoculated with L. procerum in the greenhouse produced significantly fewer root initials and a smaller root mass than control seedlings. Vertical lesions produced in seedlings by L. serpens and L. terebrantis were significantly longer than in controls. Lesions produced in mature trees by L. serpens and L. lundbergii were significantly longer than in controls. Of the fungi tested, L. serpens, L. terebrantis, and L. lundbergii were the most aggressive and may pose the greatest threat to loblolly pines.

Keywords

root disease, root feeding insects

Citation

Eckhardt, L. G.; Jones, J. P.; Klepzig, Kier D. 2004. Pathogenicity of Leptographium Species Associated with Loblolly Pine Decline. Plant Dis. 88:1174-1178