2009
DOI: 10.1111/j.1439-0329.2009.00600.x
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Identification and distribution of Armillaria species associated with an oak decline event in the Arkansas Ozarks

Abstract: Summary Forests in the Ozark Mountains of northern Arkansas recently experienced a widespread oak decline event. Armillaria, a root rot fungus, has been associated with other oak decline events and may have been an important contributing factor to tree mortality in this event. Although Armillaria has been identified from the Ozark Mountains in Missouri, it has never been investigated in the Arkansas Ozarks. Molecular diagnostic techniques were used in this study to identify species of Armillaria present on roo… Show more

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Cited by 17 publications
(11 citation statements)
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References 28 publications
(34 reference statements)
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“…The other common secondary agent in eastern North America, Armillaria spp. root rot, was present in many areas of the Ozarks that experienced decline (Bruhn et al, 2000;Kelley et al, 2009), but its relative contribution to oak mortality in the event remains unresolved. This situation provided a unique opportunity to study novel associations in a major episode of oak mortality, as well as an interesting setting in which to explore the potentially changing roles of forest history, drought, and insect outbreaks in oak decline.…”
Section: Case Study: Oak Mortality and An Unexpected Outbreak Of A LImentioning
confidence: 99%
“…The other common secondary agent in eastern North America, Armillaria spp. root rot, was present in many areas of the Ozarks that experienced decline (Bruhn et al, 2000;Kelley et al, 2009), but its relative contribution to oak mortality in the event remains unresolved. This situation provided a unique opportunity to study novel associations in a major episode of oak mortality, as well as an interesting setting in which to explore the potentially changing roles of forest history, drought, and insect outbreaks in oak decline.…”
Section: Case Study: Oak Mortality and An Unexpected Outbreak Of A LImentioning
confidence: 99%
“…This is consistent with the fact that these trees did not contain more borer holes during the outbreak than live trees, yet they died anyway, presumably due to inferior capacity for resource acquisition and/or reduced resistance to E. rufulus or other secondary invaders, such as root pathogens (Armillaria spp). Three species of Armillaria infect Q. rubra and are widespread throughout the region (Bruhn et al, 2000;Kelley et al, 2009), yet their influence is unknown at these study sites.…”
Section: Tree Characteristicsmentioning
confidence: 99%
“…Oak decline in the eastern United States is most commonly reported in the south-eastern States, west to Missouri, and north into the mid-Atlantic region (Oak et al 2004;Fan et al 2008;Kabrick et al 2008;Kelley et al 2009;Fei et al 2011). In many of these reports, species within the red oak group (Quercus section Lobatae) were reported as being most commonly affected.…”
Section: Introductionmentioning
confidence: 99%