气候变化领域集成服务门户(CCPortal): Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United States

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DOI	10.1016/j.foreco.2020.118168
	Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United States
	Dudley M.M.; Tisserat N.A.; Jacobi W.R.; Negrón J.; Stewart J.E.
发表日期	2020
ISSN	0378-1127
卷号	468
英文摘要	Historically, Cytospora canker of quaking aspen was thought to be caused primarily by Cytospora chrysosperma. However, a new and widely distributed Cytospora species on quaking aspen was recently described (Cytospora notastroma Kepley & F.B. Reeves). Here, we show the relative pathogenicity, abundance, and frequency of both species on quaking aspen in portions of the Rocky Mountain region, and constructed species-level phylogenies to examine possible hybridization among species. We inoculated small-diameter aspen trees with one or two isolates each of C. chrysosperma and C. notastroma in a greenhouse and in environmental growth chambers. Results indicate that both Cytospora species are pathogenic to drought-stressed aspen, and that C. chrysosperma is more aggressive (i.e., caused larger cankers) than C. notastroma, particularly at cool temperatures. Neither species cause significant canker growth on trees that were not drought-stressed. Both C. chrysosperma and C. notastroma are common on quaking aspen, in addition to a third, previously described species, Cytospora nivea. Multiple Cytospora species often co-occur on the same host tree, and evidence of hybridization among species exists. © 2020 Elsevier B.V.
语种	英语
scopus关键词	Drought; Environmental chambers; Growth chamber; Host trees; Populus tremuloides; Quaking aspens; Rocky Mountains; Forestry; deciduous tree; drought stress; fungal disease; fungus; growth rate; hybridization; inoculation; low temperature; pathogenicity; phylogeny; Drought; Forestry; Growth; Hybridization; Populus Tremuloides; Rocky Mountains; Trees; Rocky Mountains; United States; Cytospora; Populus; Populus tremuloides; Valsa sordida
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155236
作者单位	Biology Department, Adams State University, Alamosa, CO, United States; Department of Agricultural Biology (Emeritus), Colorado State University, Fort CollinsCO, United States; USFS Rocky Mountain Research Station, Fort CollinsCO, United States; Department of Agricultural Biology, Colorado State University, Fort CollinsCO, United States
推荐引用方式 GB/T 7714	Dudley M.M.,Tisserat N.A.,Jacobi W.R.,et al. Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United States[J],2020,468.
APA	Dudley M.M.,Tisserat N.A.,Jacobi W.R.,Negrón J.,&Stewart J.E..(2020).Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United States.Forest Ecology and Management,468.
MLA	Dudley M.M.,et al."Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United States".Forest Ecology and Management 468(2020).