U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Crops Pathology and Genetics Research: Davis, CA
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Outreach Events
                        UC Davis Picnic Day
                                    Kinders go to College
                                    STEM Girls
                                    Future Scientist Program
                                    Agriculture Future of America
                                    Wallace-Carver Fellowship
                                    Young Scholars Program
                                    Annual Awards Banquet
                    About Us
                        About Us
                                    Our Mission
                                    Principal InvestigatorsSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Pacific West Area Davis, California Crops Pathology and Genetics Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications
- Etiology and Biology of Tree Crop Diseases
- Rice Genetics
- Sustainable Floriculture
- Sustainable Viticulture

Title:   Author  item
                                            Baumgartner, Kendraitem
                                            BERGEMANN, SARAH - MID TENN STATE UNIVitem
                                            Fujiyoshi, Phillipitem
                                            ROLSHAUSEN, PHILIPPE - UNIV OF CONN, PLANT SCIitem
                                            GUBLER, W. DOUG - UC DAVIS, PLANT PATH
  Submitted to: National Viticulture Research Conference
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/5/2008
                                    Publication  Date: 9/10/2008
                                    Citation: Baumgartner, K., Bergemann, S., Fujiyoshi, P.T., Rolshausen, P., Gubler, W. 2008. IDENTIFYING SOURCES OF INOCULUM FOR EUTYPA DIEBACK INFECTIONS IN VINEYARDS. National Viticulture Research Conference.Interpretive Summary:
                                Technical Abstract: The means of spread of Eutypa dieback from vine-to-vine within vineyards is likely due to dispersal of sexual spores (ascospores) of the causal fungus, Eutypa lata, based on evidence of distributions of vegetative compatibility groups, reproductive structures (perithecia), and symptoms.  Asexual spores (conidia) are produced in nature, but are not infectious.  Ascospores are released from perithecia following rain and are wind-dispersed.  They infect grapevine vascular tissue by colonizing susceptible wounds (e.g., pruning wounds, freeze-damaged tissue).  Although it seems clear that ascospores initiate infections of vines, the origin of ascospores that initiate the first infections in a healthy vineyard is not clear.  Possible sources include distant vineyards, forest trees, or apricot orchards.  To evaluate the relatedness of E. lata populations from vineyards, forests, and apricot orchards, we isolated and characterized nine E. lata-specific microsatellite markers.  As numerous Eutypa species infect grapevines, forest trees, and apricots, we also evaluated our markers for E. armeniacae, E. laevata, E. leptoplaca, and E. petrakii var. petrakii.  These closely related species are not distinguishable from E. lata in culture, and it is, therefore, critical to ensure that markers will not inadvertently amplify isolates of different species.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov