First report of the Armillaria root disease pathogen, Armillaria sinapina, on subalpine fir (Abies lasiocarpa) and quaking aspen (Populus tremuloides) in ColoradoAuthor(s): K. S. Burns; J. W. Hanna; Ned Klopfenstein; M.-S. Kim
Source: Plant Disease. 100(1): 217.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
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In July 2014, mycelial fans (isolates CO104F, CO106F, and CO108F) of Armillaria sp. were collected from forest trees in Colorado. These isolates were all identified as A. sinapina based on a somatic pairing test against 18 tester isolates representing six North American Armillaria spp. and nucleotide sequences of the translation elongation factor 1alpha (tef-1alpha; GenBank Accession Nos. KT327065, KT327066, and KT327067). Based on nine replications of somatic incompatibility tests, all isolates showed high intraspecific compatibility (colorless antagonism) with three A. sinapina tester isolates (average 77%), but low compatibility with closely related Armillaria spp. (average 0 to 26%).
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Burns, K. S.; Hanna, J. W.; Klopfenstein, N. B.; Kim, M.-S. 2016. First report of the Armillaria root disease pathogen, Armillaria sinapina, on subalpine fir (Abies lasiocarpa) and quaking aspen (Populus tremuloides) in Colorado. Plant Disease. 100(1): 217.
KeywordsArmillaria root disease, Armillaria sinapina
- Decay of subalpine fir in Colorado
- Host-environment mismatches associated with subalpine fir decline in Colorado
- Growth of nitrogen-fertilized and thinned quaking aspen (Populus tremuloides Michx.).
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