Impacts of abiotic stresses on the physiology and metabolism of cool-season grassesA review

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Impacts of abiotic stresses on the physiology and metabolism of cool-season grasses : A review. / Loka, Dimitra; Harper, John; Humphreys, Michael; Gasior, Dagmara; Wootton-Beard, Peter; Gwynn-Jones, Dylan; Scullion, John; Doonan, John; Kingston-Smith, Alison; Dodd, Rosalind; Wang, Jinyang; Chadwick, David R.; Hill, Paul; Jones, Davey L.; Mills, Gina; Hayes, Felicity; Robinson, David.

In: Food and Energy Security, Vol. 8, No. 1, e00152, 01.02.2019.

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Loka, Dimitra ; Harper, John ; Humphreys, Michael ; Gasior, Dagmara ; Wootton-Beard, Peter ; Gwynn-Jones, Dylan ; Scullion, John ; Doonan, John ; Kingston-Smith, Alison ; Dodd, Rosalind ; Wang, Jinyang ; Chadwick, David R. ; Hill, Paul ; Jones, Davey L. ; Mills, Gina ; Hayes, Felicity ; Robinson, David. / Impacts of abiotic stresses on the physiology and metabolism of cool-season grasses : A review. In: Food and Energy Security. 2019 ; Vol. 8, No. 1.

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@article{24ba36f5dd0047b6b398a7035f2f3b95,
title = "Impacts of abiotic stresses on the physiology and metabolism of cool-season grasses: A review",
abstract = "Grasslands cover more than 70% of the world's agricultural land playing a pivotal role in global food security, economy, and ecology due to their flexibility and functionality. Climate change, characterized by changes in temperature and precipitation patterns, and by increased levels of greenhouse gases in the atmosphere, is anticipated to increase both the frequency and severity of extreme weather events, such as drought, heat waves, and flooding. Potentially, climate change could severely compromise future forage crop production and should be considered a direct threat to food security. This review aimed to summarize our current understanding of the physiological and metabolic responses of temperate grasses to those abiotic stresses associated with climate change. Primarily, substantial decreases in photosynthetic rates of cool‐season grasses occur as a result of high temperatures, water‐deficit or water‐excess, and elevated ozone, but not CO2 concentrations. Those decreases are usually attributed to stomatal and non‐stomatal limitations. Additionally, while membrane instability and reactive oxygen species production was a common feature of the abiotic stress response, total antioxidant capacity showed a stress‐specific response. Furthermore, climate change‐related stresses altered carbohydrate partitioning, with implications for biomass production. While water‐deficit stress, increased CO2, and ozone concentrations resulted in higher carbohydrate content, the opposite occurred under conditions of heat stress and flooding. The extent of damage is greatly dependent on location, as well as the type and intensity of stress. Fortunately, temperate forage grass species are highly heterogeneous. Consequently, through intra‐ and in particular inter‐specific plant hybridization (e.g., Festuca x Lolium hybrids) new opportunities are available to harness, within single genotypes, gene combinations capable of combating climate change",
keywords = "abiotic stresses, climate change, cool-season grasses, metabolism, physiology",
author = "Dimitra Loka and John Harper and Michael Humphreys and Dagmara Gasior and Peter Wootton-Beard and Dylan Gwynn-Jones and John Scullion and John Doonan and Alison Kingston-Smith and Rosalind Dodd and Jinyang Wang and Chadwick, {David R.} and Paul Hill and Jones, {Davey L.} and Gina Mills and Felicity Hayes and David Robinson",
year = "2019",
month = feb,
day = "1",
doi = "10.1002/fes3.152",
language = "English",
volume = "8",
journal = "Food and Energy Security",
issn = "2048-3694",
publisher = "Wiley",
number = "1",

}

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TY - JOUR

T1 - Impacts of abiotic stresses on the physiology and metabolism of cool-season grasses

T2 - A review

AU - Loka, Dimitra

AU - Harper, John

AU - Humphreys, Michael

AU - Gasior, Dagmara

AU - Wootton-Beard, Peter

AU - Gwynn-Jones, Dylan

AU - Scullion, John

AU - Doonan, John

AU - Kingston-Smith, Alison

AU - Dodd, Rosalind

AU - Wang, Jinyang

AU - Chadwick, David R.

AU - Hill, Paul

AU - Jones, Davey L.

AU - Mills, Gina

AU - Hayes, Felicity

AU - Robinson, David

PY - 2019/2/1

Y1 - 2019/2/1

N2 - Grasslands cover more than 70% of the world's agricultural land playing a pivotal role in global food security, economy, and ecology due to their flexibility and functionality. Climate change, characterized by changes in temperature and precipitation patterns, and by increased levels of greenhouse gases in the atmosphere, is anticipated to increase both the frequency and severity of extreme weather events, such as drought, heat waves, and flooding. Potentially, climate change could severely compromise future forage crop production and should be considered a direct threat to food security. This review aimed to summarize our current understanding of the physiological and metabolic responses of temperate grasses to those abiotic stresses associated with climate change. Primarily, substantial decreases in photosynthetic rates of cool‐season grasses occur as a result of high temperatures, water‐deficit or water‐excess, and elevated ozone, but not CO2 concentrations. Those decreases are usually attributed to stomatal and non‐stomatal limitations. Additionally, while membrane instability and reactive oxygen species production was a common feature of the abiotic stress response, total antioxidant capacity showed a stress‐specific response. Furthermore, climate change‐related stresses altered carbohydrate partitioning, with implications for biomass production. While water‐deficit stress, increased CO2, and ozone concentrations resulted in higher carbohydrate content, the opposite occurred under conditions of heat stress and flooding. The extent of damage is greatly dependent on location, as well as the type and intensity of stress. Fortunately, temperate forage grass species are highly heterogeneous. Consequently, through intra‐ and in particular inter‐specific plant hybridization (e.g., Festuca x Lolium hybrids) new opportunities are available to harness, within single genotypes, gene combinations capable of combating climate change

AB - Grasslands cover more than 70% of the world's agricultural land playing a pivotal role in global food security, economy, and ecology due to their flexibility and functionality. Climate change, characterized by changes in temperature and precipitation patterns, and by increased levels of greenhouse gases in the atmosphere, is anticipated to increase both the frequency and severity of extreme weather events, such as drought, heat waves, and flooding. Potentially, climate change could severely compromise future forage crop production and should be considered a direct threat to food security. This review aimed to summarize our current understanding of the physiological and metabolic responses of temperate grasses to those abiotic stresses associated with climate change. Primarily, substantial decreases in photosynthetic rates of cool‐season grasses occur as a result of high temperatures, water‐deficit or water‐excess, and elevated ozone, but not CO2 concentrations. Those decreases are usually attributed to stomatal and non‐stomatal limitations. Additionally, while membrane instability and reactive oxygen species production was a common feature of the abiotic stress response, total antioxidant capacity showed a stress‐specific response. Furthermore, climate change‐related stresses altered carbohydrate partitioning, with implications for biomass production. While water‐deficit stress, increased CO2, and ozone concentrations resulted in higher carbohydrate content, the opposite occurred under conditions of heat stress and flooding. The extent of damage is greatly dependent on location, as well as the type and intensity of stress. Fortunately, temperate forage grass species are highly heterogeneous. Consequently, through intra‐ and in particular inter‐specific plant hybridization (e.g., Festuca x Lolium hybrids) new opportunities are available to harness, within single genotypes, gene combinations capable of combating climate change

KW - abiotic stresses

KW - climate change

KW - cool-season grasses

KW - metabolism

KW - physiology

U2 - 10.1002/fes3.152

DO - 10.1002/fes3.152

M3 - Article

VL - 8

JO - Food and Energy Security

JF - Food and Energy Security

SN - 2048-3694

IS - 1

M1 - e00152

ER -

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