A new model of ozone stress in wheat including grain yield loss and plant acclimation to the pollutant

Droutsas, Ioannis; Challinor, Andrew J.; Arnold, S. R.; Mikkelsen, Teis Nørgaard; Hansen, Eric Steen

doi:10.1016/j.eja.2020.126125

Cited by 8 publications

(5 citation statements)

References 84 publications

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“…With regards to modelling the effect of O 3 on protein content, a simple statistical relationship between grain yield and protein content may provide an efficient parameterization. Under plant exposure to high O 3 , the observed increase in protein content is a result of the decrease in grain yield 43 , which is already simulated in some crop models 44 – 46 . It should be noted, however, that Eichi et al 47 found that the relationship between grain protein content and yield for wheat in Australia varies between low and high productivity environments.…”

Section: Discussionmentioning

confidence: 64%

“…Three levels of significance (0.05, 0.01 and 0.001) were considered. The trade-off between grain yield and protein content was quantified using linear regressions of the three cultivars growing under baseline CO 2 (400 ppm) and future CO 2 (700 ppm) levels; the grain yield data were converted to t/ha 46 . Graphical representations were generated using R version R-4.0.1 and GraphPad Prism version 9.0.2 for Windows.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Effects of combined abiotic stresses on nutrient content of European wheat and implications for nutritional security under climate change

Galani

Hansen

Droutsas

et al. 2022

Sci Rep

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Climate change is causing problems for agriculture, but the effect of combined abiotic stresses on crop nutritional quality is not clear. Here we studied the effect of 10 combinations of climatic conditions (temperature, CO2, O3 and drought) under controlled growth chamber conditions on the grain yield, protein, and mineral content of 3 wheat varieties. Results show that wheat plants under O3 exposure alone concentrated + 15 to + 31% more grain N, Fe, Mg, Mn P and Zn, reduced K by − 5%, and C did not change. Ozone in the presence of elevated CO2 and higher temperature enhanced the content of Fe, Mn, P and Zn by 2–18%. Water-limited chronic O3 exposure resulted in + 9 to + 46% higher concentrations of all the minerals, except K. The effect of climate abiotic factors could increase the ability of wheat to meet adult daily dietary requirements by + 6% to + 12% for protein, Zn and Fe, but decrease those of Mg, Mn and P by − 3% to − 6%, and K by − 62%. The role of wheat in future nutrition security is discussed.

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Section: Discussionmentioning

confidence: 64%

Section: Methodsmentioning

confidence: 99%

Effects of combined abiotic stresses on nutrient content of European wheat and implications for nutritional security under climate change

Galani

Hansen

Droutsas

et al. 2022

Sci Rep

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show abstract

“…Plants can enhance their O 3 stress tolerance by regulating physiological mechanisms such as stomatal closure and an increase in antioxidants. This acclimation mechanism enables stomata to remain partly open and facilitates photosynthesis-related gas exchange, avoiding drastic plant growth decreases [37,38].…”

Section: Physiological Changes In Response To Ozonementioning

confidence: 99%

“…GR reduces the oxidized form of glutathione (GSSG) by reducing NADPH activity [46,47] (Figure 5). and facilitates photosynthesis-related gas exchange, avoiding drastic plant growth decreases [37,38].…”

Section: Biochemical Changes Caused By Ozonementioning

confidence: 99%

Individual and Interactive Effects of Elevated Ozone and Temperature on Plant Responses

et al. 2022

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From the preindustrial era to the present day, the tropospheric ozone (O3) concentration has increased dramatically in much of the industrialized world due to anthropogenic activities. O3 is the most harmful air pollutant to plants. Global surface temperatures are expected to increase with rising O3 concentration. Plants are directly affected by temperature and O3. Elevated O3 can impair physiological processes, as well as cause the accumulation of reactive oxygen species (ROS), leading to decreased plant growth. Temperature is another important factor influencing plant development. Here, we summarize how O3 and temperature elevation can affect plant physiological and biochemical characteristics, and discuss results from studies investigating plant responses to these factors. In this review, we focused on the interactions between elevated O3 and temperature on plant responses, because neither factor acts independently. Temperature has great potential to significantly influence stomatal movement and O3 uptake. For this reason, the combined influence of both factors can yield significantly different results than those of a single factor. Plant responses to the combined effects of elevated temperature and O3 are still controversial. We attribute the substantial uncertainty of these combined effects primarily to differences in methodological approaches.

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“…The SUM06 metric is the sum of the hourly surface-level O 3 concentrations above a threshold of 60 ppb per year [ 32 ]. Both the AOT40 and SUM06 metrics have been primarily applied to estimate accumulated O 3 -induced crop failure in Europe and the United States [ [33] , [34] , [35] , [36] ]. In contrast, both the M7 and W126 metrics are defined as the average hourly O 3 concentration values from 9:00 a.m. to 3:59 p.m. and from 8:00 a.m. to 8:00 p.m. (only between May and September for W126) [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Assessment of rice yield and economic losses caused by ground-level O3 exposure in the Mekong delta region, Vietnam

Bui

Nguyen

2023

Heliyon

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A new model of ozone stress in wheat including grain yield loss and plant acclimation to the pollutant

Cited by 8 publications

References 84 publications

Effects of combined abiotic stresses on nutrient content of European wheat and implications for nutritional security under climate change

Effects of combined abiotic stresses on nutrient content of European wheat and implications for nutritional security under climate change

Individual and Interactive Effects of Elevated Ozone and Temperature on Plant Responses

Assessment of rice yield and economic losses caused by ground-level O3 exposure in the Mekong delta region, Vietnam

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