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ARS Home » Midwest Area » Urbana, Illinois » Global Change and Photosynthesis Research » Research » Publications at this Location » Publication #354518

Research Project: Optimizing Photosynthesis for Global Change and Improved Yield

Location: Global Change and Photosynthesis Research

Title: The role of photosynthesis in improving maize tolerance to ozone pollution [abstract]

item Ainsworth, Elizabeth - Lisa

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 5/22/2018
Publication Date: 7/17/2018
Citation: Ainsworth, E.A. 2018. The role of photosynthesis in improving maize tolerance to ozone pollution [abstract]. Photosynthesis From Light to Life, July 17-20, 2018, Montreal, Canada.

Interpretive Summary:

Technical Abstract: Ground-level ozone pollution has more than doubled since pre-industrial times, and is currently estimated to cause up to 10% reductions in U.S. maize yields annually. Maize productivity is reduced by exposure to ozone as it diffuses through stomatal pores and reacts to form damaging reactive oxygen species in the apoplast. Ozone also accelerates the loss of photosynthetic capacity associated with senescence. Traditional breeding has not selected for ozone tolerance in crops, and the selection for greater stomatal conductance may have inadvertently increased ozone stress. Thus, in order to improve maize tolerance to ozone, it is critical to improve understanding of the initial cellular and molecular responses to the air pollutant, and to identify genetic variation in the response of crops to rising ozone stress. This talk will focus on recent advances in such understanding and identify further research needs.