Journal article
Virulence of Leptographium serpenson longleaf pine seedlings under varying soil moisture regimes
Plant Disease, Vol.92(11), pp.1574-1576
2008
Abstract
Recently, Leptographium serpens has been recovered from the roots of declining and dead longleaf pine (Pinus palustris) in stands associated with various abiotic stresses. Although most data suggest that L. serpens is pathogenic to various Pinus spp., there is little known of its virulence on longleaf pine or its relationship with abiotic stress in causing disease. These trials examined the effects of L. serpens infection coupled with drought stress. Trials began with wound inoculations of bareroot longleaf pine seedlings in spring 2006 and 2007 at the seedling stress facility at Auburn University. Soon after inoculation, seedlings were also subjected to adequate moisture, moderate drought, or severe drought. Sixteen weeks after inoculation, longleaf pine survival, L. serpens virulence, and seedling growth characteristics were measured. Longleaf pine seedlings inoculated with L. serpens had 33% mortality (138/420) which was significantly greater than nonwounded control seedlings (22%, 47/211). Survival and lesion size on longleaf pine suggests that L. serpens is moderately pathogenic to longleaf pine seedlings. Separately, moisture stress associated with low soil moisture also contributed to seedling mortality. Results suggest that L. serpens infection and moisture stress commonly experienced by southern pines act independently to stress longleaf pine.
Details
- Title
- Virulence of Leptographium serpenson longleaf pine seedlings under varying soil moisture regimes
- Authors/Creators
- G. Matusick (Author/Creator) - Graduate Student.L.G. Eckhardt (Author/Creator) - Assistant Research Professor.S.A. Enebak (Author/Creator) - Auburn University
- Publication Details
- Plant Disease, Vol.92(11), pp.1574-1576
- Publisher
- The American Phytopathological Society
- Identifiers
- 991005542718107891
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- 3 Agriculture, Environment & Ecology
- 3.32 Entomology
- 3.32.1539 Bark Beetle Ecology
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science