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
 Global Change and Photosynthesis Research: Urbana, IL
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area Urbana, Illinois Global Change and Photosynthesis 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

Title:   Author  item
                                            Yendrek, Craigitem
                                            Ainsworth, Elizabeth

                                                         - *Lisa*
  Submitted to: International Congress of Photosynthesis
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 5/29/2013
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Ozone (O3) is an air-born pollutant that has increased in the atmosphere from industrial activities. Current O3 concentrations exceed the threshold for damage to plants, and globally, $14-$26 billion in potential crop productivity is estimated to be lost to O3 stress each year. Sensitivity of C3 crops to O3 is well-established; however, developing O3 tolerance in major crops has not been an industrial priority to date. Photosynthesis is particularly sensitive to O3, and recent proteomics studies have demonstrated that many components of the photosynthetic apparatus, including light-harvesting complexes, ATP synthase and Calvin cycle enzymes are negatively impacted by O3. Increasing O3 concentration by 25% above current ambient levels reduces photosynthesis in major C3 food crops by 10% and reduces stomatal conductance by 15%. Much of the reduction in photosynthesis occurs late in leaf development as O3 accelerates the process of senescence, which coincides with the critical period in reproductive development that determines yield. Here, we discuss recent experiments detailing the effects of chronic elevated O3 on leaf primary metabolism and photosynthesis, and identify potential targets for improving crop tolerance to O3.


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