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
 Grape Genetics Research Unit (GGRU): Geneva, NY
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Northeast Area Geneva, New York Grape Genetics Research Unit (GGRU) 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

Title:   Author  item
                                            MOYER, MICHELLE - Washington State Universityitem
                                            Londo, Jasonitem
                                            GADOURY, DAVID - Cornell Universityitem
                                            Cadle-Davidson, Lance
  Submitted to: European Journal of Plant Pathology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 8/23/2015
                                    Publication  Date: 9/3/2015
                                    Publication URL: http://DOI 10.1007/s10658-015-0745-1Citation: Moyer, M., Londo, J.P., Gadoury, D., Cadle Davidson, L.E. 2015. Cold Stress-Induced Disease Resistance(SIDR): Indirect effects of low temperatures on host-pathogen interactions and disease progress in the grapevine powdery mildew pathosystem. European Journal of Plant Pathology. 2:5-8. doi: 10.1007/s10658-015-0745-1.Interpretive Summary: Grape powdery mildew (GPM) cannot be cultured and grows on the surface of susceptible grape tissue. These features make GPM sensitive to environmental stresses, both directly and indirectly via the host responses. Directly, cold exposure kills sections of GPM colonies and delays sporulation. Indirectly after cold nights, grapevine leaves develop cold stress-induced disease resistance (SIDR). The effects of SIDR are even greater on older, more resistant leaves. Reserachers reviewed the biology of GPM cold responses and suggested opportunities for investigating the mechanistic basis of cold SIDR.  While GPM is a challenging disease for research, its biology is fascinating.
                                Technical Abstract: Erysiphe necator is an obligate biotroph capable of infecting three genera within the Vitaceae (Vitis, Parthenocissus, and Ampelopsis).  The pathogen inhabits a unique niche involving wholly external mycelial growth on the host epidermal cells. This growth habit coupled with its biotrophic reliance on the host makes it sensitive to both direct effects of abiotic stresses on the pathogen and indirect abiotic effects via the host responses. Directly, cold exposure of the developing pathogen results in in a protracted latent period in addition to death of hyphal segments. Indirectly, acute low temperature events are followed by a transient cold stress-induced disease resistance (SIDR) in leaves of Vitis vinifera. While the cold SIDR phenotype mimics the infection response observed on ontogenically-resistant leaves, the effects of SIDR and ontogenic resistance are additive. Sufficient tools are now available for investigating the mechanistic basis of cold SIDR.  While pathosystems involving obligate biotrophs complicate research on direct and indirect environmental effects on the pathogen, this requisite interaction also creates interesting systems to understand how the condition of the host may influence subsequent disease development.


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