Effect of elevated CO2 and temperature on the oxidative stress response to drought in Lolium perenne L. and Medicago sativa L.

Farfán-Vignolo, Evelyn Roxana; Asard, Han

doi:10.1016/j.plaphy.2012.06.014

Cited by 65 publications

(57 citation statements)

References 35 publications

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“…oxidative pressure (Farfan-Vignolo and Asard, 2012;Naudts et al, 2014;Zinta et al, 2014 Phosphorous being a major constituent of nucleic acid (about 40-60% P in the cell), P deficiency affects RNA synthesis and protein synthesis, and thus inhibits metabolism including photosynthesis. Optimum photosynthesis requires 2.0-2.5 mM P is required in the chloroplast.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Physiological and molecular alterations in plants exposed to high [CO2] under phosphorus stress

Pandey

Zinta

AbdElgawad

et al. 2015

Biotechnology Advances

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Physiological and molecular alterations in plants exposed to high [CO 2 ] under phosphorus stress, Biotechnology Advances (2015Advances ( ), doi: 10.1016Advances ( /j.biotechadv.2015 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. This is the author's version of a work that was accepted for publication in Biotechnology Advances (Ed. Elsevier). Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Pandey, Renu et al. Fax: +91-11-25846420] has increased substantially in recent decades and will continue to do so, whereas the availability of phosphorus (P) is limited and unlikely to increase in the future. P is a non-renewable resource, and it is essential to every form of life. P is a key plant nutrient controlling the responsiveness of photosynthesis to [CO 2 ]. Increases in [CO 2 ] typically results in increased biomass through stimulation of net photosynthesis, and hence enhance the demand for P uptake. However, most soils contain low concentrations of available P.Therefore, low P is one of the major growth-limiting factors for plants in many agricultural and natural ecosystems. The adaptive responses of plants to [CO 2 ] and P availability encompass alterations at morphological, physiological, biochemical and molecular levels. In general low P reduces growth, whereas high [CO 2 ] enhances it particularly in C 3 plants. Photosynthetic capacity is often enhanced under high [CO

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Physiological and molecular alterations in plants exposed to high [CO2] under phosphorus stress

Pandey

Zinta

AbdElgawad

et al. 2015

Biotechnology Advances

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“…[33] indicated that C 3 grasses would have higher nutritional quality than C4 grasses under elevated [CO 2 ], based on higher levels of proteins and fructans. Polyphenols were significantly increased in Lolium perenne compared to Medicago lupulina under climate extreme conditions [34]. It therefore appears worth to pay closer attention to compare climate effects on the chemical composition of different plant groups.…”

Section: Introductionmentioning

confidence: 99%

Climate Extreme Effects on the Chemical Composition of Temperate Grassland Species under Ambient and Elevated CO2: A Comparison of Fructan and Non-Fructan Accumulators

et al. 2014

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Elevated CO2 concentrations and extreme climate events, are two increasing components of the ongoing global climatic change factors, may alter plant chemical composition and thereby their economic and ecological characteristics, e.g. nutritional quality and decomposition rates. To investigate the impact of climate extremes on tissue quality, four temperate grassland species: the fructan accumulating grasses Lolium perenne, Poa pratensis, and the nitrogen (N) fixing legumes Medicago lupulina and Lotus corniculatus were subjected to water deficit at elevated temperature (+3°C), under ambient CO2 (392 ppm) and elevated CO2 (620 ppm). As a general observation, the effects of the climate extreme were larger and more ubiquitous in combination with elevated CO2. The imposed climate extreme increased non-structural carbohydrate and phenolics in all species, whereas it increased lignin in legumes and decreased tannins in grasses. However, there was no significant effect of climate extreme on structural carbohydrates, proteins, lipids and mineral contents and stoichiometric ratios. In combination with elevated CO2, climate extreme elicited larger increases in fructan and sucrose content in the grasses without affecting the total carbohydrate content, while it significantly increased total carbohydrates in legumes. The accumulation of carbohydrates in legumes was accompanied by higher activity of sucrose phosphate synthase, sucrose synthase and ADP-Glc pyrophosphorylase. In the legumes, elevated CO2 in combination with climate extreme reduced protein, phosphorus (P) and magnesium (Mg) contents and the total element:N ratio and it increased phenol, lignin, tannin, carbon (C), nitrogen (N) contents and C:N, C:P and N:P ratios. On the other hand, the tissue composition of the fructan accumulating grasses was not affected at this level, in line with recent views that fructans contribute to cellular homeostasis under stress. It is speculated that quality losses will be less prominent in grasses (fructan accumulators) than legumes under climate extreme and its combination with elevated CO2 conditions.

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“…(), in experiments with tall fescue plants exposed to increased CO 2 levels, reported substantial increases in hexose and galactose. Accordingly, increases in insoluble (structural) carbohydrates, under similar conditions, were noted in perennial ryegrass (Farfan‐Vignolo & Asard, ). Higher levels of total non‐structural carbohydrates were also observed in perennial ryegrass under higher CO 2 levels by Isopp, Frehner, Long, and Nosberger () with the authors indicating a more pronounced effect under low N‐input.…”

Section: Effects Of Elevated Co2 On Cool‐season Grass Metabolismmentioning

confidence: 63%

“…For cool‐season grasses, photosynthesis and stomatal conductance are the main plant physiological functions to be primarily affected by CO 2 levels (Long, Ainsworth, Rogers, & Ort, ). Significant decreases in stomatal conductance rates have been reported in a variety of grass species under conditions of increased CO 2 (Farfan‐Vignolo & Asard, ; Burgess and Huang 2014, Song, Yu, & Huang, ). These decreases have been attributed either to alterations in stomatal aperture (Assmann, ) or in stomatal density (Lammertsma et al., ) (Figure ).…”

Section: Effects Of Elevated Co2 On Cool‐season Grass Physiologymentioning

confidence: 99%

“…Furthermore, Ainsworth and Rogers () reported that acclimation of photosynthesis in perennial ryegrass under elevated CO 2 concentrations was due to the substantial limitations in the sink strength observed. Nevertheless, elevated CO 2 concentrations had no effect on light‐saturated photosynthesis (A sat ) and photochemical efficiency of Photosystem II (PS II) in perennial ryegrass (Farfan‐Vignolo & Asard, ) which is in contrast with Casella and Soussana (). We speculate that this discrepancy was due to the shorter duration to CO 2 exposure (weeks vs. years), since the CO 2 concentrations used in both studies were quite similar (620 ppm vs. 700 ppm).…”

Section: Effects Of Elevated Co2 On Cool‐season Grass Physiologymentioning

confidence: 99%

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Impacts of abiotic stresses on the physiology and metabolism of cool‐season grasses: A review

Loka

Harper

Humphreys

et al. 2018

Food and Energy Security

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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.

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Effect of elevated CO2 and temperature on the oxidative stress response to drought in Lolium perenne L. and Medicago sativa L.

Cited by 65 publications

References 35 publications

Physiological and molecular alterations in plants exposed to high [CO2] under phosphorus stress

Physiological and molecular alterations in plants exposed to high [CO2] under phosphorus stress

Climate Extreme Effects on the Chemical Composition of Temperate Grassland Species under Ambient and Elevated CO2: A Comparison of Fructan and Non-Fructan Accumulators

Impacts of abiotic stresses on the physiology and metabolism of cool‐season grasses: A review

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