Rising atmospheric carbon dioxide on grain quality in crop plants

Uprety, D. C.; Sen, Suman; Dwivedi, Neeta

doi:10.1007/s12298-010-0029-3

Cited by 29 publications

(25 citation statements)

References 61 publications

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“…For instance, postanthesis drought can cause up to 30% decrease in yield (Borrell et al, 2000). It is also known that elevated [CO 2 ], drought, high temperature, and any combinations of these stresses can lead to significant changes in grain composition (Taub et al, 2008;Da Matta et al, 2010;Uprety et al, 2010;Madan et al, 2012), suggesting diverse metabolic alterations and/or adaptations that occur in the plant when it is cultivated in such conditions.…”

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confidence: 99%

Changes in Whole-Plant Metabolism During Grain-Filling Stage in Sorghum Bicolor L. (Moench) Grown Under Elevated Co2 and Drought

et al. 2015

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Projections indicate an elevation of the atmospheric CO 2 concentration ([CO 2 ]) concomitant with an intensification of drought for this century, increasing the challenges to food security. On the one hand, drought is a main environmental factor responsible for decreasing crop productivity and grain quality, especially when occurring during the grain-filling stage. On the other hand, elevated [CO 2 ] is predicted to mitigate some of the negative effects of drought. Sorghum (Sorghum bicolor) is a C 4 grass that has important economical and nutritional values in many parts of the world. Although the impact of elevated [CO 2 ] and drought in photosynthesis and growth has been well documented for sorghum, the effects of the combination of these two environmental factors on plant metabolism have yet to be determined. To address this question, sorghum plants (cv BRS 330) were grown and monitored at ambient (400 mmol mol 21 ) or elevated (800 mmol mol 21 ) [CO 2 ] for 120 d and subjected to drought during the grainfilling stage. Leaf photosynthesis, respiration, and stomatal conductance were measured at 90 and 120 d after planting, and plant organs (leaves, culm, roots, prop roots, and grains) were harvested. Finally, biochemical composition and intracellular metabolites were assessed for each organ. As expected, elevated [CO 2 ] reduced the stomatal conductance, which preserved soil moisture and plant fitness under drought. Interestingly, the whole-plant metabolism was adjusted and protein content in grains was improved by 60% in sorghum grown under elevated [CO 2 ].Global food demand is projected to increase up to 110% by the middle of this century (Tilman et al., 2011; Alexandratos and Bruinsma, 2012), particularly due to a rise in world population that is likely to plateau at about 9 billion people (Godfray et al., 2010 (NOAA, 2015). According to the A2 emission scenario from the U.S. Environmental Protection Agency, in the absence of explicit climate change policy, atmospheric CO 2 concentrations will reach 800 mmol mol 21 by the end of this century. The increasing atmospheric [CO 2 ] is resulting in global climate changes, such as reduction in water availability and elevation in temperature. These factors are expected to heavily influence food production in the next years (Godfray and Garnett, 2014;Magrin et al., 2014). Sorghum (Sorghum bicolor) is a C 4 grass, considered a staple food grain for millions of the poorest and most food-insecure people in the semiarid tropics of Africa, Asia, and Central America, serving as an important source of energy, proteins, vitamins, and minerals (Taylor et al., 2006). Moreover, this crop is used for animal feed and as industrial raw material in developed countries such as the United States, which is the main world producer (FAO, 2015). With a fully sequenced genome (Paterson et al., 2009) and over 45,000 accessions representing a large geographic and genetic diversity, sorghum is a good model system in which to study the impact of global climate changes in C 4 grasses. ...

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Changes in Whole-Plant Metabolism During Grain-Filling Stage in Sorghum Bicolor L. (Moench) Grown Under Elevated Co2 and Drought

et al. 2015

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“…The increase of carbohydrates due to elevated CO 2 could result from enhanced photosynthesis resulting in higher total carbohydrates [4]. The decrease of NPK and some micronutrients was due to the dilution of concentrations of the nutrients by higher levels of carbohydrates as supported by previous research [12,39,[42][43][44]. Higher seed protein, oleic acid, raffinose and stachyose, and lower oil, linolenic acid, glucose, fructose, and sucrose under drought or drought with elevated CO 2 conditions can be used as biochemical indicators/markers to be used for breeding to select for drought tolerance.…”

Section: Soybean -The Basis Of Yield Biomass and Productivity 146mentioning

confidence: 67%

“…The percentage decrease of nutrients by elevated CO 2 ranged from 0.7 to 19.5%, except for K and P [44]. The decrease of macroand micronutrients by elevated CO 2 was due to the dilution effect induced by the increase of carbohydrates in seeds [12,39,[42][43][44]. Treatments used were four: T1 = plants were grown irrigated and subjected to 360 μmol mol −1 CO 2 concentration; T2 = plants were grown irrigated and subjected to 700 μmol mol −1 CO 2 concentration; T3 = plants were grown under drought and subjected to 360 μmol mol −1 CO 2 concentration; and T4 = plants were grown under drought and subjected to 700 μmol mol −1 CO 2 concentration.…”

Section: Soybean -The Basis Of Yield Biomass and Productivitymentioning

confidence: 96%

“…It was concluded that these biochemical compounds can be used as drought indicators and can be used in breeding program to select for drought tolerance [12,23]. CO 2 elevation resulted in a decrease of seed Na, Ca, Mg, S, Fe, Zn, and Mn [42,43]. The percentage decrease of nutrients by elevated CO 2 ranged from 0.7 to 19.5%, except for K and P [44].…”

Section: Soybean -The Basis Of Yield Biomass and Productivitymentioning

confidence: 99%

“…Therefore, research is needed to quantify the negative impact of elevated CO 2 and its interactions with biotic and abiotic stresses, including drought, on seed quality to breed for higher seed nutritional qualities and develop appropriate crop management systems [43,45]. It was reported that the physiological processes influenced by drought can be identified by the biochemical characterization of plant tissues under stress conditions [46].…”

Section: Soybean -The Basis Of Yield Biomass and Productivity 146mentioning

confidence: 99%

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Effects of Drought and Elevated Atmospheric Carbon Dioxide on Seed Nutrition and 15N and 13C Natural Abundance Isotopes in Soybean Under Controlled Environments

Bellaloui¹,

Mengistu²,

Abbas³

et al. 2017

Soybean - The Basis of Yield, Biomass and Productivity

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The objective of the current research was to evaluate the effects of drought and elevated CO 2 on seed production and seed nutrition under controlled conditions in soybean. Soybean plants were subjected to ambient and elevated CO 2 and under irrigated and drought conditions. The results showed that drought or drought with elevated CO 2 resulted in high protein and oleic acid, but low in oil and linoleic and linolenic acids. Significant decrease of sucrose, glucose, and fructose concentrations was noticed, but high content of raffinose and stachyose was observed. Nutrients such as N, P, K, and some micro-nutrients were reduced under drought or drought with normal or elevated C ratio) natural abundance isotopes were also altered under drought or drought with ambient or elevated CO 2 concentrations, reflecting nitrogen and carbon metabolism changes. The current research demonstrated that global climate changes may lead to changes in seed nutrition, and nitrogen and carbon metabolism. Efforts of breeders to select for these traits will sustain food source and food security for humans and livestock as soybean is a major source for protein and oil for human consumption and soymeal for animals.

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Impact of simultaneous increase in CO₂ and temperature on soil aggregates, associated organic carbon, and nutritional quality of rice–wheat grains

Rao,

Dwivedi,

Kumar

et al. 2024

J. Plant Nutr. Soil Sci.

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BackgroundFood and nutritional security remain a major thrust area in the under developed and developing countries. These problems are exaggerated by the unprecedented challenges of climate change.AimsThe aim of this study was to assess the impact of climate change on grain quality of wheat and rice genotypes as well as their effect on soil aggregate fractions and aggregate associated carbon.MethodologyIn the context, the present study was formulated by considering four predicted climate scenarios, namely, T0C0 (ambient condition), T0C1 (approx. 25% higher CO2), T1C0 (2°C higher temperature) and T1C1 (25% higher CO2 + 2°C higher temperature) and their impact on grain quality of wheat (HD2967, HD2733, DBW17, and HD3093) and rice (IR83376‐B‐B‐24‐2, IR84895‐B‐127‐CRA‐5‐1‐1, R Bhagwati, and IR64) genotypes as well as soil aggregate fractions and aggregate associated carbon.ResultsThe result revealed that T0C1 has a negative impact on grain nitrogen and protein content. On an average, nitrogen content in wheat and rice showed a decrease of about 15.55% (5.52%–25.32%) and 11.44% (3.33%–23.86%), respectively. Interestingly, the concurrent effect of elevated CO2 and temperature resulted in higher nitrogen and protein content as compared to other climate conditions. Further, P (P) content in the wheat and rice grains also improved under the elevated CO2 condition, whereas the content of potassium was not significantly influenced. Apart from major nutrients, micronutrients (Zn and Fe) were significantly influenced by climatic variables. The study revealed that grain Zn and Fe content of both the crops were reduced due to elevated CO2. The data on soil aggregate fractions revealed that elevated CO2 favors the formation of macro‐aggregate, whereas an increase in temperature favors micro‐aggregate fractions in the soil. Further, the elevation of CO2 also resulted in the accumulation of more carbon in the macro‐aggregates.ConclusionWe conclude that elevated CO2 and temperature cause specific changes in soil aggregate formation and grain nutrient quality. Based on molar ratio of P/Zn and P/Fe, we identified varieties of rice (IR83376‐B‐B‐24‐2) and wheat (HD2733) with higher bioavailability to address the nutritional security with changing climate in developing countries.

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Rising atmospheric carbon dioxide on grain quality in crop plants

Cited by 29 publications

References 61 publications

Changes in Whole-Plant Metabolism During Grain-Filling Stage in Sorghum Bicolor L. (Moench) Grown Under Elevated Co2 and Drought

Changes in Whole-Plant Metabolism During Grain-Filling Stage in Sorghum Bicolor L. (Moench) Grown Under Elevated Co2 and Drought

Effects of Drought and Elevated Atmospheric Carbon Dioxide on Seed Nutrition and 15N and 13C Natural Abundance Isotopes in Soybean Under Controlled Environments

Impact of simultaneous increase in CO₂ and temperature on soil aggregates, associated organic carbon, and nutritional quality of rice–wheat grains

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Rising atmospheric carbon dioxide on grain quality in crop plants

Cited by 29 publications

References 61 publications

Changes in Whole-Plant Metabolism During Grain-Filling Stage in Sorghum Bicolor L. (Moench) Grown Under Elevated Co2 and Drought

Changes in Whole-Plant Metabolism During Grain-Filling Stage in Sorghum Bicolor L. (Moench) Grown Under Elevated Co2 and Drought

Effects of Drought and Elevated Atmospheric Carbon Dioxide on Seed Nutrition and 15N and 13C Natural Abundance Isotopes in Soybean Under Controlled Environments

Impact of simultaneous increase in CO2 and temperature on soil aggregates, associated organic carbon, and nutritional quality of rice–wheat grains

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Impact of simultaneous increase in CO₂ and temperature on soil aggregates, associated organic carbon, and nutritional quality of rice–wheat grains