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
                                            Ainsworth, Elizabeth

                                                         - *Lisa*item
                                            BROWN, P - University Of Illinoisitem
                                            LEAKEY, A D B - University Of Illinoisitem
                                            MCINTYRE, L - University Of Floridaitem
                                            BARRIOS-PEREZ, I - University Of Illinoisitem
                                            DALSING, B - University Of Illinoisitem
                                            ERICE, G - University Of Illinoisitem
                                            LEISNER, C - University Of Illinoisitem
                                            MONTES, C - University Of Illinoisitem
                                            MORSE, A - University Of Florida
  Submitted to: Plant and Animal Genome Conference
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 11/11/2013
                                    Publication  Date: 1/13/2014
                                    Citation: Ainsworth, E.A., Brown, P.J., Leakey, A., McIntyre, L.M., Barrios-Perez, I., Dalsing, B., Erice, G., Leisner, C., Montes, C., Morse, A. 2014. Sites of ozone sensitivity in diverse maize inbred lines [abstract]. Plant and Animal Genome Conference. Paper No. P171.Interpretive Summary:
                                Technical Abstract: Tropospheric ozone (O3) is an air pollutant that costs ~$14-26 billion in global crop losses and is projected to worsen in the future.  Potential sites of O3 sensitivity in maize were tested by growing 200 inbred lines, including the nested association mapping population founder lines, under ambient (~40 ppb) and elevated O3 concentrations (100 ppb) at the Free Air Concentration Enrichment (FACE) site in Champaign, IL.  Ozone treated plants showed decreases in green leaf number and leaf chlorophyll and increases in leaf senescence compared to control plants, and these differences became progressively greater through the growing season. On average, O3 accelerated the time to anthesis and silking by ~1 day, but did not affect the anthesis to silking interval. Elevated O3 impaired spikelet formation in a subset of genotypes. Photosynthetic measurements of the reference line B73 revealed that daily C gain was reduced by >20% late in the season, showing that C4 photosynthesis is sensitive to O3. Elevated O3 reduced incidence of common rust on leaves at flowering, but increased incidence of stalk rot at harvest in some lines.  Analysis of leaf and silk biochemistry, leaf reflectance, stomatal patterning and yield is ongoing.  There appear to be many sites of O3 sensitivity in C4 maize, and significant genetic variation in O3 responses in all phenotypic traits examined.  Future work will investigate O3 tolerance in both inbred and hybrid maize lines, identify phenotypic traits with the strongest correlations to yield loss, and identify O3 tolerant and sensitive maize germplasm.


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