By the same authors

From the same journal

New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling

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New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling. / Osborne, Stephanie Alice; Pandey, Divya; Mills, Gina; Hayes, Felicity; Harmens, Harry; Gillies, David ; Bueker, Patrick; Emberson, Lisa Dianne.

In: Plants, Vol. 8, No. 4, 84, 01.04.2019.

Research output: Contribution to journalArticle

Harvard

Osborne, SA, Pandey, D, Mills, G, Hayes, F, Harmens, H, Gillies, D, Bueker, P & Emberson, LD 2019, 'New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling', Plants, vol. 8, no. 4, 84. https://doi.org/10.3390/plants8040084

APA

Osborne, S. A., Pandey, D., Mills, G., Hayes, F., Harmens, H., Gillies, D., Bueker, P., & Emberson, L. D. (2019). New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling. Plants, 8(4), [84]. https://doi.org/10.3390/plants8040084

Vancouver

Osborne SA, Pandey D, Mills G, Hayes F, Harmens H, Gillies D et al. New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling. Plants. 2019 Apr 1;8(4). 84. https://doi.org/10.3390/plants8040084

Author

Osborne, Stephanie Alice ; Pandey, Divya ; Mills, Gina ; Hayes, Felicity ; Harmens, Harry ; Gillies, David ; Bueker, Patrick ; Emberson, Lisa Dianne. / New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling. In: Plants. 2019 ; Vol. 8, No. 4.

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@article{6d4a5274a9dc4ada9b8bc700550b0992,
title = "New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling",
abstract = "Estimating food production under future air pollution and climate conditions in scenario analysis depends on accurately modelling ozone (O₃) effects on yield. This study tests several assumptions that form part of published approaches for modelling O₃ effects on photosynthesis and leaf duration against experimental data. In 2015 and 2016, two wheat cultivars were exposed in eight hemispherical glasshouses to O₃ ranging from 22 to 57 ppb (24 h mean), with profiles ranging from raised background to high peak treatments. The stomatal O₃ flux (Phytotoxic Ozone Dose, POD) to leaves was simulated using a multiplicative stomatal conductance model. Leaf senescence occurred earlier as average POD increased according to a linear relationship, and the two cultivars showed very different senescence responses. Negative effects of O₃ on photosynthesis were only observed alongside O₃-induced leaf senescence, suggesting that O₃ does not impair photosynthesis in un-senesced flag leaves at the realistic O₃ concentrations applied here. Accelerated senescence is therefore likely to be the dominant O₃ effect influencing yield in most agricultural environments. POD was better than 24 h mean concentration and AOT40 (accumulated O₃ exceeding 40 ppb, daylight hours) at predicting physiological response to O₃, and flux also accounted for the difference in exposure resulting from peak and high background treatments.",
keywords = "ozone; air pollution; wheat; photosynthesis; leaf senescence; crop modelling, Crop modeling, Air pollution, Ozone, Leaf senescence, Photosynthesis, Wheat",
author = "Osborne, {Stephanie Alice} and Divya Pandey and Gina Mills and Felicity Hayes and Harry Harmens and David Gillies and Patrick Bueker and Emberson, {Lisa Dianne}",
note = "{\textcopyright} 2019 by the authors.",
year = "2019",
month = apr,
day = "1",
doi = "10.3390/plants8040084",
language = "English",
volume = "8",
journal = "Plants",
issn = "2223-7747",
publisher = "Multidisciplinary Digital Publishing Institute",
number = "4",

}

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TY - JOUR

T1 - New Insights into Leaf Physiological Responses to Ozone for Use in Crop Modelling

AU - Osborne, Stephanie Alice

AU - Pandey, Divya

AU - Mills, Gina

AU - Hayes, Felicity

AU - Harmens, Harry

AU - Gillies, David

AU - Bueker, Patrick

AU - Emberson, Lisa Dianne

N1 - © 2019 by the authors.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Estimating food production under future air pollution and climate conditions in scenario analysis depends on accurately modelling ozone (O₃) effects on yield. This study tests several assumptions that form part of published approaches for modelling O₃ effects on photosynthesis and leaf duration against experimental data. In 2015 and 2016, two wheat cultivars were exposed in eight hemispherical glasshouses to O₃ ranging from 22 to 57 ppb (24 h mean), with profiles ranging from raised background to high peak treatments. The stomatal O₃ flux (Phytotoxic Ozone Dose, POD) to leaves was simulated using a multiplicative stomatal conductance model. Leaf senescence occurred earlier as average POD increased according to a linear relationship, and the two cultivars showed very different senescence responses. Negative effects of O₃ on photosynthesis were only observed alongside O₃-induced leaf senescence, suggesting that O₃ does not impair photosynthesis in un-senesced flag leaves at the realistic O₃ concentrations applied here. Accelerated senescence is therefore likely to be the dominant O₃ effect influencing yield in most agricultural environments. POD was better than 24 h mean concentration and AOT40 (accumulated O₃ exceeding 40 ppb, daylight hours) at predicting physiological response to O₃, and flux also accounted for the difference in exposure resulting from peak and high background treatments.

AB - Estimating food production under future air pollution and climate conditions in scenario analysis depends on accurately modelling ozone (O₃) effects on yield. This study tests several assumptions that form part of published approaches for modelling O₃ effects on photosynthesis and leaf duration against experimental data. In 2015 and 2016, two wheat cultivars were exposed in eight hemispherical glasshouses to O₃ ranging from 22 to 57 ppb (24 h mean), with profiles ranging from raised background to high peak treatments. The stomatal O₃ flux (Phytotoxic Ozone Dose, POD) to leaves was simulated using a multiplicative stomatal conductance model. Leaf senescence occurred earlier as average POD increased according to a linear relationship, and the two cultivars showed very different senescence responses. Negative effects of O₃ on photosynthesis were only observed alongside O₃-induced leaf senescence, suggesting that O₃ does not impair photosynthesis in un-senesced flag leaves at the realistic O₃ concentrations applied here. Accelerated senescence is therefore likely to be the dominant O₃ effect influencing yield in most agricultural environments. POD was better than 24 h mean concentration and AOT40 (accumulated O₃ exceeding 40 ppb, daylight hours) at predicting physiological response to O₃, and flux also accounted for the difference in exposure resulting from peak and high background treatments.

KW - ozone; air pollution; wheat; photosynthesis; leaf senescence; crop modelling

KW - Crop modeling

KW - Air pollution

KW - Ozone

KW - Leaf senescence

KW - Photosynthesis

KW - Wheat

UR - http://www.scopus.com/inward/record.url?scp=85067993006&partnerID=8YFLogxK

U2 - 10.3390/plants8040084

DO - 10.3390/plants8040084

M3 - Article

C2 - 30939811

VL - 8

JO - Plants

JF - Plants

SN - 2223-7747

IS - 4

M1 - 84

ER -