Elevated CO2 and heat stress interactions affect grain yield, quality and mineral nutrient composition in rice under field conditions

Chaturvedi, Ashish; Bahuguna, Rajeev Nayan; Pal, Madan; Shah, Divya; Maurya, Sadhana; Jagadish, Krishna S.V.

doi:10.1016/j.fcr.2017.02.018

Cited by 77 publications

(60 citation statements)

References 53 publications

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“…The improvements in fragrant rice quality could be explained by the enhanced net photosynthetic rate during the grain-filling stage. Previous study revealed that there was a strong correlation between photosynthesis during grain-filling stage and grain quality, and early study also evidenced that photosynthesis was a determining factor to grain quality of rice (Chaturvedi et al 2017). Furthermore, present study showed that Se applications could significantly increase the Se content in fragrant rice grain.…”

Section: Discussionsupporting

confidence: 65%

Foliar application of selenium (Se) at heading stage induces regulation of photosynthesis, yield formation, and quality characteristics in fragrant rice

Luo¹,

He²,

Du³

et al. 2019

Photosynt.

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In order to study the effect of foliar application of sodium selenate on fragrant rice performance at the heading stage, the present study was conducted with two fragrant rice cultivars, 'Meixiangzhan-2' and 'Xiangyaxiangzhan'. At the heading stage, six concentrations of sodium selenate solution (0, 10, 20, 30, 40, and 50 μmol L-1) were sprinkled to plants. Our results showed that foliar application of sodium selenate increased chlorophyll contents in rice leaves and upregulated net photosynthetic rate at the grain-filling stage. The enhancement was observed in grain yield, seed-setting rate, and in 1,000-grain mass. The highest yield and net photosynthetic rate were both recorded at 40 μmol L-1 treatment for both cultivars. Furthermore, foliar application of sodium selenate also improved some grain quality attributes, such as head rice rate and crude protein content. The Se concentration in fragrant rice grain also increased due to sodium selenate application. In conclusion, sodium selenate has potential to be the exogenous plant growth regulator in fragrant rice production to increase yield and quality.

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Section: Discussionsupporting

confidence: 65%

Foliar application of selenium (Se) at heading stage induces regulation of photosynthesis, yield formation, and quality characteristics in fragrant rice

Luo¹,

He²,

Du³

et al. 2019

Photosynt.

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“…The impact of elevated CO 2 and warmer temperature on evapotranspiration could potentially explain the opposite responses of the treatments on nutritional quality, including the key interaction between treatment and canopy position on seed quality. Alternatively, a ‘dilution’ of nutrients by elevated CO 2 has been proposed as another potential mechanism driving the decrease in nutrition in crops (Chaturvedi et al ., ), and may contribute to our observed responses. Warmer soils associated with the heating treatment (Black et al ., ) may also increase the rate at which soil nutrients are taken up by roots through a variety of mechanistic chemical, physical and biological responses to temperature (Pregitzer and King, ).…”

Section: Discussionmentioning

confidence: 60%

“…In the present study, we analyzed the impact of eCO 2 and elevated temperature, singly and in combination, on soybean seed yield and seed protein, oil and mineral concentrations. The results showed that eCO 2 increased seed yield and reduced the concentrations of a few minerals such as Fe, consistent with many previous studies on nutritional quality for a range of crops (Myers et al ., ; Broberg et al ., ; Chaturvedi et al ., ). Elevated temperature, however, reduced yield and increased the concentration of a range of minerals.…”

Section: Discussionmentioning

confidence: 97%

Increased temperatures may safeguard the nutritional quality of crops under future elevated CO₂ concentrations

2019

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SummaryIron (Fe) and zinc (Zn) deficiencies are a global human health problem that may worsen by the growth of crops at elevated atmospheric CO 2 concentration (eCO 2). However, climate change will also involve higher temperature, but it is unclear how the combined effect of eCO 2 and higher temperature will affect the nutritional quality of food crops. To begin to address this question, we grew soybean (Glycine max) in a Temperature by Free‐Air CO 2 Enrichment (T‐FACE) experiment in 2014 and 2015 under ambient (400 μmol mol−1) and elevated (600 μmol mol−1) CO 2 concentrations, and under ambient and elevated temperatures (+2.7°C day and +3.4°C at night). In our study, eCO 2 significantly decreased Fe concentration in soybean seeds in both seasons (−8.7 and −7.7%) and Zn concentration in one season (−8.9%), while higher temperature (at ambient CO 2 concentration) had the opposite effect. The combination of eCO 2 with elevated temperature generally restored seed Fe and Zn concentrations to levels obtained under ambient CO 2 and temperature conditions, suggesting that the potential threat to human nutrition by increasing CO 2 concentration may not be realized. In general, seed Fe concentration was negatively correlated with yield, suggesting inherent limitations to increasing seed Fe. In addition, we confirm our previous report that the concentration of seed storage products and several minerals varies with node position at which the seeds developed. Overall, these results demonstrate the complexity of predicting climate change effects on food and nutritional security when various environmental parameters change in an interactive manner.

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“…Most of the grain mineral concentrations were significantly increased at late sowing date, suggesting that at eT may counterbalance some of the negative effects of eCO 2 on grain mineral concentration. Contrasting findings were obtained in rice (Chaturvedi et al 2017) and soybean (Bellaloui et al 2016). Qiao et al (2019) also investigated the effects of eT in combination with eCO 2 on grain quality of soybean and maize grown in open-top chambers in a Mollisol during five growing seasons.…”

Section: The Effects Of Other Climate Change Factors On Nutrient Accumentioning

confidence: 93%

“…Several studies have shown that several climatic changes may disturb the nutrient accumulation in major crops as demonstrated in Table 1. Therefore it is important to look at those studies dealing with the nutritional impact of eCO 2 (Bunce 2015;Dietterich et al 2015;Jin et al 2015;Kumagai et al 2015;Myers et al 2014) or combined with water scarcity (Wu et al 2004), soil mineral deficiency (Asif et al 2018;Haase et al 2008;Jin et al 2009Jin et al , 2014Jin et al , 2015, elevated temperature (eT) (Bellaloui et al 2016;Chaturvedi et al 2017;Fernando et al 2014), or salt stress (Chrysargyris et al 2019;Petretto et al 2019;Petropoulos et al 2017;Scagel et al 2019).…”

Section: The Effects Of Other Climate Change Factors On Nutrient Accumentioning

confidence: 99%

Preserving the nutritional quality of crop plants under a changing climate: importance and strategies

et al. 2019

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Background Global climate is changing more rapidly than ever, threatening plant growth and productivity while exerting considerable direct and indirect effects on the quality and quantity of plant nutrients. Scope This review focuses on the global impact of climate change on the nutritional value of plant foods. It showcases the existing evidence linking the effects of climate change factors on crop nutrition and the concentration of nutrients in edible plant parts. It focuses on the effect of elevated CO 2 (eCO 2), elevated temperature (eT), salinity, waterlogging and drought stresses, and what is known regarding their direct and indirect influence on nutrient availability. Furthermore, it provides possible strategies to preserve the nutritional composition of plant foods under changing climates. Conclusions Climate change has an impact on the accumulation of minerals and protein in crop plants, with eCO 2 being the underlying factor of most of the reported changes. The effects are clearly dependent on the type, intensity and duration of the imposed stress, plant genotype and developmental stage. Strong interactions (both positive and negative) can be found between individual climatic factors and soil availability of nitrogen (N), potassium (K), iron (Fe) and phosphorous (P). The development of future interventions to ensure that the world's population has access to plentiful, safe and nutritious food may need to rely on breeding for nutrients under the context of climate change, including legumes in cropping systems, better farm management practices and utilization of microbial inoculants that enhance nutrient availability.

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Elevated CO2 and heat stress interactions affect grain yield, quality and mineral nutrient composition in rice under field conditions

Cited by 77 publications

References 53 publications

Foliar application of selenium (Se) at heading stage induces regulation of photosynthesis, yield formation, and quality characteristics in fragrant rice

Foliar application of selenium (Se) at heading stage induces regulation of photosynthesis, yield formation, and quality characteristics in fragrant rice

Increased temperatures may safeguard the nutritional quality of crops under future elevated CO₂ concentrations

Preserving the nutritional quality of crop plants under a changing climate: importance and strategies

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Elevated CO2 and heat stress interactions affect grain yield, quality and mineral nutrient composition in rice under field conditions

Cited by 77 publications

References 53 publications

Foliar application of selenium (Se) at heading stage induces regulation of photosynthesis, yield formation, and quality characteristics in fragrant rice

Foliar application of selenium (Se) at heading stage induces regulation of photosynthesis, yield formation, and quality characteristics in fragrant rice

Increased temperatures may safeguard the nutritional quality of crops under future elevated CO2 concentrations

Preserving the nutritional quality of crop plants under a changing climate: importance and strategies

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Increased temperatures may safeguard the nutritional quality of crops under future elevated CO₂ concentrations