Ozone exposure response for U.S. soybean cultivars: Linear reductions in photosynthetic potential, biomass, and yield

Amy M. Betzelberger, Craig R. Yendrek, Jindong Sun, Courtney P. Leisner, Randall L Nelson, Donald Richard Ort, Elizabeth Ainsworth

Research output: Contribution to journalArticle

Abstract

Current background ozone (O3) concentrations over the northern hemisphere's midlatitudes are high enough to damage crops and are projected to increase. Soybean (Glycine max) is particularly sensitive to O3; therefore, establishing an O3 exposure threshold for damage is critical to understanding the current and future impact of this pollutant. This study aims to determine the exposure response of soybean to elevated tropospheric O3 by measuring the agronomic, biochemical, and physiological responses of seven soybean genotypes to nine O3 concentrations (38-120 nL L21) within a fully open-air agricultural field location across 2 years. All genotypes responded similarly, with season-long exposure to O3 causing a linear increase in antioxidant capacity while reducing leaf area, light absorption, specific leaf mass, primary metabolites, seed yield, and harvest index. Across two seasons with different temperature and rainfall patterns, there was a robust linear yield decrease of 37 to 39 kg ha21 per nL L21 cumulative O3 exposure over 40 nL L21. The existence of immediate effects of O3 on photosynthesis, stomatal conductance, and photosynthetic transcript abundance before and after the initiation and termination of O3 fumigation were concurrently assessed, and there was no evidence to support an instantaneous photosynthetic response. The ability of the soybean canopy to intercept radiation, the efficiency of photosynthesis, and the harvest index were all negatively impacted by O3, suggesting that there are multiple targets for improving soybean responses to this damaging air pollutant.

Original languageEnglish (US)
Pages (from-to)1827-1839
Number of pages13
JournalPlant physiology
Volume160
Issue number4
DOIs
StatePublished - Dec 1 2012

Fingerprint

Ozone
Soybeans
ozone
Biomass
dose response
soybeans
biomass
cultivars
harvest index
Photosynthesis
pollutants
photosynthesis
crop damage
Genotype
economic threshold
Fumigation
genotype
Air Pollutants
fumigation
seed yield

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science

Cite this

Ozone exposure response for U.S. soybean cultivars : Linear reductions in photosynthetic potential, biomass, and yield. / Betzelberger, Amy M.; Yendrek, Craig R.; Sun, Jindong; Leisner, Courtney P.; Nelson, Randall L; Ort, Donald Richard; Ainsworth, Elizabeth.

In: Plant physiology, Vol. 160, No. 4, 01.12.2012, p. 1827-1839.

Research output: Contribution to journalArticle

Betzelberger, Amy M. ; Yendrek, Craig R. ; Sun, Jindong ; Leisner, Courtney P. ; Nelson, Randall L ; Ort, Donald Richard ; Ainsworth, Elizabeth. / Ozone exposure response for U.S. soybean cultivars : Linear reductions in photosynthetic potential, biomass, and yield. In: Plant physiology. 2012 ; Vol. 160, No. 4. pp. 1827-1839.
@article{1edecf476ddf4e24ab68a33d96c8263b,
title = "Ozone exposure response for U.S. soybean cultivars: Linear reductions in photosynthetic potential, biomass, and yield",
abstract = "Current background ozone (O3) concentrations over the northern hemisphere's midlatitudes are high enough to damage crops and are projected to increase. Soybean (Glycine max) is particularly sensitive to O3; therefore, establishing an O3 exposure threshold for damage is critical to understanding the current and future impact of this pollutant. This study aims to determine the exposure response of soybean to elevated tropospheric O3 by measuring the agronomic, biochemical, and physiological responses of seven soybean genotypes to nine O3 concentrations (38-120 nL L21) within a fully open-air agricultural field location across 2 years. All genotypes responded similarly, with season-long exposure to O3 causing a linear increase in antioxidant capacity while reducing leaf area, light absorption, specific leaf mass, primary metabolites, seed yield, and harvest index. Across two seasons with different temperature and rainfall patterns, there was a robust linear yield decrease of 37 to 39 kg ha21 per nL L21 cumulative O3 exposure over 40 nL L21. The existence of immediate effects of O3 on photosynthesis, stomatal conductance, and photosynthetic transcript abundance before and after the initiation and termination of O3 fumigation were concurrently assessed, and there was no evidence to support an instantaneous photosynthetic response. The ability of the soybean canopy to intercept radiation, the efficiency of photosynthesis, and the harvest index were all negatively impacted by O3, suggesting that there are multiple targets for improving soybean responses to this damaging air pollutant.",
author = "Betzelberger, {Amy M.} and Yendrek, {Craig R.} and Jindong Sun and Leisner, {Courtney P.} and Nelson, {Randall L} and Ort, {Donald Richard} and Elizabeth Ainsworth",
year = "2012",
month = "12",
day = "1",
doi = "10.1104/pp.112.205591",
language = "English (US)",
volume = "160",
pages = "1827--1839",
journal = "Plant Physiology",
issn = "0032-0889",
publisher = "American Society of Plant Biologists",
number = "4",

}

TY - JOUR

T1 - Ozone exposure response for U.S. soybean cultivars

T2 - Linear reductions in photosynthetic potential, biomass, and yield

AU - Betzelberger, Amy M.

AU - Yendrek, Craig R.

AU - Sun, Jindong

AU - Leisner, Courtney P.

AU - Nelson, Randall L

AU - Ort, Donald Richard

AU - Ainsworth, Elizabeth

PY - 2012/12/1

Y1 - 2012/12/1

N2 - Current background ozone (O3) concentrations over the northern hemisphere's midlatitudes are high enough to damage crops and are projected to increase. Soybean (Glycine max) is particularly sensitive to O3; therefore, establishing an O3 exposure threshold for damage is critical to understanding the current and future impact of this pollutant. This study aims to determine the exposure response of soybean to elevated tropospheric O3 by measuring the agronomic, biochemical, and physiological responses of seven soybean genotypes to nine O3 concentrations (38-120 nL L21) within a fully open-air agricultural field location across 2 years. All genotypes responded similarly, with season-long exposure to O3 causing a linear increase in antioxidant capacity while reducing leaf area, light absorption, specific leaf mass, primary metabolites, seed yield, and harvest index. Across two seasons with different temperature and rainfall patterns, there was a robust linear yield decrease of 37 to 39 kg ha21 per nL L21 cumulative O3 exposure over 40 nL L21. The existence of immediate effects of O3 on photosynthesis, stomatal conductance, and photosynthetic transcript abundance before and after the initiation and termination of O3 fumigation were concurrently assessed, and there was no evidence to support an instantaneous photosynthetic response. The ability of the soybean canopy to intercept radiation, the efficiency of photosynthesis, and the harvest index were all negatively impacted by O3, suggesting that there are multiple targets for improving soybean responses to this damaging air pollutant.

AB - Current background ozone (O3) concentrations over the northern hemisphere's midlatitudes are high enough to damage crops and are projected to increase. Soybean (Glycine max) is particularly sensitive to O3; therefore, establishing an O3 exposure threshold for damage is critical to understanding the current and future impact of this pollutant. This study aims to determine the exposure response of soybean to elevated tropospheric O3 by measuring the agronomic, biochemical, and physiological responses of seven soybean genotypes to nine O3 concentrations (38-120 nL L21) within a fully open-air agricultural field location across 2 years. All genotypes responded similarly, with season-long exposure to O3 causing a linear increase in antioxidant capacity while reducing leaf area, light absorption, specific leaf mass, primary metabolites, seed yield, and harvest index. Across two seasons with different temperature and rainfall patterns, there was a robust linear yield decrease of 37 to 39 kg ha21 per nL L21 cumulative O3 exposure over 40 nL L21. The existence of immediate effects of O3 on photosynthesis, stomatal conductance, and photosynthetic transcript abundance before and after the initiation and termination of O3 fumigation were concurrently assessed, and there was no evidence to support an instantaneous photosynthetic response. The ability of the soybean canopy to intercept radiation, the efficiency of photosynthesis, and the harvest index were all negatively impacted by O3, suggesting that there are multiple targets for improving soybean responses to this damaging air pollutant.

UR - http://www.scopus.com/inward/record.url?scp=84870819754&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84870819754&partnerID=8YFLogxK

U2 - 10.1104/pp.112.205591

DO - 10.1104/pp.112.205591

M3 - Article

C2 - 23037504

AN - SCOPUS:84870819754

VL - 160

SP - 1827

EP - 1839

JO - Plant Physiology

JF - Plant Physiology

SN - 0032-0889

IS - 4

ER -