气候变化领域集成服务门户(CCPortal): Disease incidence and spatial distribution of host resistance in a coast live oak/sudden oak death pathosystem

CCPortal

DOI	10.1016/j.foreco.2018.11.035
	Disease incidence and spatial distribution of host resistance in a coast live oak/sudden oak death pathosystem
	Conrad A.O.; McPherson B.A.; Lopez-Nicora H.D.; D'Amico K.M.; Wood D.L.; Bonello P.
发表日期	2019
ISSN	0378-1127
起始页码	618
结束页码	624
卷号	433
英文摘要	Sudden oak death (SOD) results in extensive mortality of native populations of red oak (Quercus spp.) and tanoak (Notholithocarpus densiflorus) in coastal California and Oregon. The pathogen, Phytophthora ramorum, causes a syndrome in Q. agrifolia (coast live oak, CLO) characterized by bleeding stem cankers, attacks by bark and ambrosia beetles, and development of the endophytic fungus, Annulohypoxylon thouarsianum. The study examined disease incidence and resistance in CLO within Northern California stands that had no apparent prior exposure to the pathogen. Seven years after artificial inoculation of mature trees distributed between two separate stands in a California wildland, 27% of CLO expressed resistance to P. ramorum, while 61% died (N = 149). The remaining trees were alive but symptomatic. External and subcortical canker lengths, measured approximately one year post-inoculation, were significant predictors of CLO resistance and survival seven years post-inoculation. Spatial analysis also revealed that variation in CLO susceptibility to P. ramorum is aggregated on the landscape, suggesting that more resistant and susceptible trees tend to co-occur and that resistance is a heritable trait. From 2011 to 2017 the incidence of natural infections in a second cohort of non-inoculated trees increased from 2.0% (N = 447) to 13.2% (N = 423). Altogether, these findings suggest that estimating the frequency and determining the spatial distribution of resistant trees on the landscape can be used to identify sites that should be targeted for germplasm collection and habitat conservation. © 2018 Elsevier B.V.
英文关键词	Inverse distance weighted analysis; Logistic regression; Phytophthora ramorum; Quercus agrifolia; Resistance
语种	英语
scopus关键词	Electric resistance; Plants (botany); Spatial distribution; Artificial inoculation; Germplasm collections; Habitat conservation; Inverse distance weighted; Logistic regressions; Natural infection; Phytophthora ramorum; Quercus agrifolia; Forestry; beetle; deciduous tree; disease incidence; disease resistance; fungus; host; mortality; native species; numerical method; pathogen; regression analysis; spatial analysis; spatial distribution; survival; California; Distribution; Electric Resistance; Exposure; Forestry; Inoculation; Lithocarpus; Trees; California; Oregon; United States; Annulohypoxylon thouarsianum; Fungi; Lithocarpus; Phytophthora ramorum; Platypodini; Quercus; Quercus agrifolia; Quercus rubra
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/156249
作者单位	Department of Plant Pathology, The Ohio State University, 2021 Coffey Road, Columbus, OH 43210, United States; Department of Environmental Science, Policy, and Management, University of California, 130 Mulford Hall, Berkeley, CA 94720, United States; Departamento de Producción Agrícola, Universidad San Carlos, Alfredo Seiferheld 4989, C.P. 1884, Asunción, Paraguay
推荐引用方式 GB/T 7714	Conrad A.O.,McPherson B.A.,Lopez-Nicora H.D.,et al. Disease incidence and spatial distribution of host resistance in a coast live oak/sudden oak death pathosystem[J],2019,433.
APA	Conrad A.O.,McPherson B.A.,Lopez-Nicora H.D.,D'Amico K.M.,Wood D.L.,&Bonello P..(2019).Disease incidence and spatial distribution of host resistance in a coast live oak/sudden oak death pathosystem.Forest Ecology and Management,433.
MLA	Conrad A.O.,et al."Disease incidence and spatial distribution of host resistance in a coast live oak/sudden oak death pathosystem".Forest Ecology and Management 433(2019).