Abstract
Armillaria root disease, caused by several Armillaria species, is one of most damaging tree diseases throughout the world (Wargo & Shaw 1985). In southeastern Alaska, both A. sinapina and A. nabsnona have previously been reported, but these species have generally been considered as weak pathogens or saprophytes under natural conditions in this region (Shaw & Loopstra 1988, Adams et al. 2015). More recently, however, A. sinapina has been found in pathogenic situations in Alaska (Klopfenstein et al. 2009a, Adams et al. 2015). In Shaw and Loopstra’s (1988) study, they also identified two Armillaria spp. (A. sinapina and A. nabsnona) in addition to unknown Armillaria sp. from Alaska, which may represent new species. With the discovery of active and potentially increasing Armillaria root disease in Alaska and the possibility of new Armillaria species in the region, we investigated potential Armillaria species distributions using DNA sequence-based identification coupled with bioclimatic modeling (Klopfenstein et al 2009b, Ross-Davis et al. 2012, Elías-Román et al. 2013, and Klopfenstein et al. 2017).
Keywords
Armillaria,
root disease,
tree diseases
Citation
Hanna, J. W.; Mulvey, R. L.; Kim, M. -S.; Stewart, J. E.; Bright, B. C.; Warwell, M. V.; Klopfenstein, N. B. 2020. Bioclimatic modeling of Armillaria species in southeastern Alaska, including potentially invasive Armillaria species under changing climate. In: Reynolds, Gregory J.; Wilhelmi, Nicholas P.; Palacios, Patsy, compilers. Proceeding of the 66th Western International Forest Disease Work Conference; 3-7 June 2019; Estes Park, CO. WIFDWC: www.wifdwc.org. p. 171-176.
