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First report of the Armillaria root disease pathogen, Armillaria sinapina, on subalpine fir (Abies lasiocarpa) and quaking aspen (Populus tremuloides) in Colorado

Author(s):

K. S. Burns
J. W. Hanna
M.-S. Kim

Year:

2016

Publication type:

Scientific Journal (JRNL)

Primary Station(s):

Rocky Mountain Research Station

Source:

Plant Disease. 100(1): 217.

Description

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%).

Citation

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.

Cited

Publication Notes

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https://www.fs.usda.gov/treesearch/pubs/50646