Early Detection of Sudden Oak Death Based on Foliar Hosts PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Early Detection of Sudden Oak Death Based on Foliar Hosts PDF full book. Access full book title Early Detection of Sudden Oak Death Based on Foliar Hosts by Kelly E. Buja. Download full books in PDF and EPUB format.
Author: Kelly E. Buja Publisher: ISBN: Category : Oak Languages : en Pages :
Book Description
An early detection methodology was developed to detect Phytophthora ramorum, the pathogen responsible for causing sudden oak death, at a landscape level prior to symptoms of overstory mortality.
Author: Kelly E. Buja Publisher: ISBN: Category : Oak Languages : en Pages :
Book Description
An early detection methodology was developed to detect Phytophthora ramorum, the pathogen responsible for causing sudden oak death, at a landscape level prior to symptoms of overstory mortality.
Author: Susan J. Frankel Publisher: CreateSpace ISBN: 9781480198630 Category : Languages : en Pages : 390
Book Description
Sudden oak death (SOD), caused by Phytophthora ramorum, was first discovered in Oregon forests by aerial survey in July 2001. Since then an interagency team has been working with landowners to eradicate the pathogen by cutting and burning all infected and nearby host plants. The Oregon SOD program now consists of the following elements: early detection; delimitation of infested areas; treatment; research and monitoring; and host reduction in areas of probable disease spread. The Sudden Oak Death Fourth Science Symposium provided a forum for current research on sudden oak death. Ninety submissions describing papers or posters on the following sudden oak death/P. ramorum topics are included: biology, genetics, nursery and wildland management, monitoring, ecology, and diagnostics.
Author: Frances Seton Ockels Publisher: ISBN: Category : Sudden oak death Languages : en Pages : 226
Book Description
Abstract: Phytophthora ramorum, the causal agent of Sudden Oak Death, is a recently discovered disease, which was first observed killing tanoaks in Mann County, California in the mid 1 990s. Since then the pathogen has been found in fourteen coastal counties in California and one southwestern county in Oregon and has killed thousands of oaks and tanoaks in forests and urban-forest interfaces. In these areas, the pathogen is having a dramatic ecological impact by changing resource availability upon which many invertebrates and vertebrates depend. Additionally, P. ramorum infects a large variety of ornamental plants that are common in the nursery industry. Many of the host species of P. ramorum are widely distributed by nurseries in California, Oregon, and across the U.S. The disease could spread across the U.S. by transporting nursery stock infected with P. ramorum. A single escape from an infested nursery into surrounding woodlands or forests in areas potentially conducive to development of the disease could be devastating. Due to the imminent threat of the pathogen spreading and to the limited knowledge of the relatively newly discovered pathogen, this research had two main objectives. The first objective was to monitor the spread of P. ramorum in the eastern U.S., while the second objective was to investigate ecological aspects of the disease in the forests of California by examining the response of coast live oaks and ambrosia beetles to P. ramorum infection. The spread ofF. ramorum was monitored through our participation in the U.S. Forest Service National Phytophthora ramorum Survey of Forest Environments in 2004 and 2005. The survey focused on prevention of spread of P. ramorum through early detection of the pathogen in nursery and forest settings. In 2004, 110 sites were surveyed in the North Central region and 620 samples were processed and analyzed, while in 2005, 168 sites were surveyed with 263 samples processed and analyzed. The results for the 2004 and 2005 surveys conducted in Ohio, Indiana, Iowa, Illinois, Missouri, and Wisconsin showed that the areas surveyed were P. ramorum free. The second part of this research investigated P. ramorum infected coast live oaks in the native oak woodlands of California. Specifically, the defense responses of oaks infected with P. ramorum were investigated. Additionally, the affect of Cambistat treatment on the defense responses of P. ramorum infected and healthy coast live oaks was examined. Tissue of infected and healthy coast live oaks not treated with Cambistat and tissue of infected and healthy coast live oaks treated with Cambistat were sampled, extracted, and analyzed by High Pressure Liquid Chromatography (HPLC) for the identification of pathogen induced secondary metabolites. Five secondary metabolites, gallic acid, tyrosol, and three unknown compounds were identified as being present in different amounts in sampled phloem, suggesting that at least some of these compounds might be associated with resistance to this pathogen. Furthermore, a new association between opportunistic ambrosia beetles and bleeding cankers on coast live oaks infected with P. ramorum was investigated. It is unknown how ambrosia beetles select oaks infected with P. ramorum for colonization. The goal of this part of the study was to identify volatile chemicals emitted from bleeding cankers that might be involved in attracting beetles to the diseased oaks. Volatiles were collected using Solid Phase Microextraction (SPME) fibers from vials containing bark exudate typical of P. ramorum-infected trees, infected phloem, and healthy phloem. The volatile compounds were analyzed by Gas Chromatography- Mass Spectrometry (GCMS). Eight phenolic compounds, 4-ethylphenol, 4-ethylguaiacol, 4-propylguaiacol, ethyihexanol, isooctyl mercaptoacetate, tyrosol, N-acetyltyramine, and antiarol were identified by comparing their mass spectra to two libraries, the Wiley Registry of Mass Spectral Data and the Nist Library. Future research, such as trapping experiments and coupled gas chromatography -- electroantennographic detection (GC-EAD) will determine if these compounds are behaviorally active.
Author: John Kliejunas Publisher: CreateSpace ISBN: 9781470110574 Category : Languages : en Pages : 188
Book Description
Sudden oak death and Phytophthora ramorum, both first recognized about a decade ago, have been the subject of hundreds of scientific and popular press articles. This document presents a comprehensive, concise summary of sudden oak death and P. ramorum research findings and management activities. Topics covered include introduction and background, identification and distribution, the disease cycle, epidemiology and modeling, management and control, and economic and environmental impacts. U.S. Department of Agriculture, Forest Service. Includes discussion of: Causal Agent, Distribution, Hosts, Diagnosis, The Disease Cycle, Modeling Disease Distribution and Spatial-Temporal, Patterns of Mortality, Management and Control, Economic and Environmental Impacts of Phytophthora ramorum.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Sudden oak death is a new disease capable of causing a range of symptoms from leaf spots to plant death on many woody hosts. Because sudden oak death is a new disease, much about the pathogen, host range, and the disease epidemiology is unknown.
Author: Institute of Medicine Publisher: National Academies Press ISBN: 030921226X Category : Medical Languages : en Pages : 488
Book Description
Fungal diseases have contributed to death and disability in humans, triggered global wildlife extinctions and population declines, devastated agricultural crops, and altered forest ecosystem dynamics. Despite the extensive influence of fungi on health and economic well-being, the threats posed by emerging fungal pathogens to life on Earth are often underappreciated and poorly understood. On December 14 and 15, 2010, the IOM's Forum on Microbial Threats hosted a public workshop to explore the scientific and policy dimensions associated with the causes and consequences of emerging fungal diseases.
Author: Laurence Raleigh Costello Publisher: UCANR Publications ISBN: 1601076800 Category : Architecture Languages : en Pages : 225
Book Description
This publication offers a comprehensive look at the management of oaks in urban areas. As development moves into oak woodland areas, more and more oaks are becoming "urban" oaks. Oaks are highly valued in urban areas for their aesthetic, environmental, economic and cultural benefits. However, significant impacts to the health and structural stability of oaks have resulted from urban encroachment. Changes in environment, incompatible cultural practices, and pest problems can all lead to the early demise of our stately oaks. Using this book you'll learn how to effectively manage and protect oaks in urban areas - existing oaks as well as the planting of new oaks. Three key areas are addressed: selection, care, and preservation. You'll learn how cultural practices, pest management, risk management, preservation during development, and genetic diversity can all play a role in preserving urban oaks. Arborists, urban foresters, landscape architects, planners and designers, golf course superintendents, academics, and Master Gardeners alike will find this to be an invaluable reference guide.
Author: Kelly E. Buja
Author: Kelly E. Buja
Author: Susan J. Frankel
Author: 
Author: Frances Seton Ockels
Author: John Kliejunas
Author: Janelle Breton Deshais
Author: 
Author: Institute of Medicine
Author: Matteo Garbelotto 
Author: Laurence Raleigh Costello