Impact of elevated CO2 and drought on yield and quality traits of a historical (Blanqueta) and a modern (Sula) durum wheat

Erice, Gorka; Sanz‐Sáez, Álvaro; González-Torralba, Jon; Méndez-Espinoza, Ana María; Urretavizcaya, I.; Nieto, María Teresa García; Serret, María Dolores; Araus, José Luís; Irigoyen, Juan José; Aranjuelo, Íker

doi:10.1016/j.jcs.2019.03.012

Cited by 21 publications

(16 citation statements)

References 25 publications

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“…While the effect of introducing semi-dwarf varieties should also be considered, our study showed that increasing [CO 2 ] favored crop production. Previous experiments, carried out with wheat plants grown in environments where atmospheric [CO 2 ] was increased by 150–300 ppm, showed similar increases in grain yield values 5 , 24 . As has been widely described in these previous experiments, the higher yield records would be associated with the stimulation of photosynthetic rates.…”

Section: Discussionmentioning

confidence: 55%

“…Stable isotopes are time-integrated indicators of how plants interact and respond to their abiotic and biotic environments 26 . Consequently, alterations in Δ 13 C have been used as a selection indicator of stomatal opening, water transpiration and water use efficiency (WUE) under different water availability and [CO 2 ] 5 , 26 . In the case of Rothamsted, the negative correlation between [CO 2 ] and Δ 13 C detected after the 1960’s revealed that following the increase in [CO 2 ] and temperature, and the decrease of precipitation, plants tended to decrease stomatal opening and reduce water loss via canopy transpiration 19 .…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, as observed by Oury et al 4 , the beneficial effects expected from the increase in [CO 2 ] in European crop production during recent decades have been constrained by the effects of temperature increases and extended drought periods. This is a major issue, because cereal grains are a key source of carbohydrates, proteins, amino acids, lipids, vitamins and minerals, all of which determine the nutritional value and quality of wheat products 5 . More specifically, those crops provide 44% of the daily dietary intake of Fe, 27% of Mg, 25% of Zn and 31% of Cu 6 .…”

Section: Introductionmentioning

confidence: 99%

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Assessing the evolution of wheat grain traits during the last 166 years using archived samples

Mariem

Gámez

Larraya

et al. 2020

Sci Rep

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The current study focuses on yield and nutritional quality changes of wheat grain over the last 166 years. It is based on wheat grain quality analyses carried out on samples collected between 1850 and 2016. Samples were obtained from the Broadbalk Continuous Wheat Experiment (UK) and from herbaria from 16 different countries around the world. Our study showed that, together with an increase in carbohydrate content, an impoverishment of mineral composition and protein content occurred. The imbalance in carbohydrate/protein content was specially marked after the 1960’s, coinciding with strong increases in ambient [CO2] and temperature and the introduction of progressively shorter straw varieties. The implications of altered crop physiology are discussed.

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Section: Discussionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessing the evolution of wheat grain traits during the last 166 years using archived samples

Mariem

Gámez

Larraya

et al. 2020

Sci Rep

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“…Sula). The modern durum wheat cultivar Sula is one the most widely cultivated in the Mediterranean region, showing good yield and quality grain under elevated CO 2 conditions [ 52 ].…”

Section: Methodsmentioning

confidence: 99%

Short-Term Exposure to High Atmospheric Vapor Pressure Deficit (VPD) Severely Impacts Durum Wheat Carbon and Nitrogen Metabolism in the Absence of Edaphic Water Stress

Fakhet

Morales

Jauregui

et al. 2021

Plants

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Low atmospheric relative humidity (RH) accompanied by elevated air temperature and decreased precipitation are environmental challenges that wheat production will face in future decades. These changes to the atmosphere are causing increases in air vapor pressure deficit (VPD) and low soil water availability during certain periods of the wheat-growing season. The main objective of this study was to analyze the physiological, metabolic, and transcriptional response of carbon (C) and nitrogen (N) metabolism of wheat (Triticum durum cv. Sula) to increases in VPD and soil water stress conditions, either alone or in combination. Plants were first grown in well-watered conditions and near-ambient temperature and RH in temperature-gradient greenhouses until anthesis, and they were then subjected to two different water regimes well-watered (WW) and water-stressed (WS), i.e., watered at 50% of the control for one week, followed by two VPD levels (low, 1.01/0.36 KPa and high, 2.27/0.62 KPa; day/night) for five additional days. Both VPD and soil water content had an important impact on water status and the plant physiological apparatus. While high VPD and water stress-induced stomatal closure affected photosynthetic rates, in the case of plants watered at 50%, high VPD also caused a direct impairment of the RuBisCO large subunit, RuBisCO activase and the electron transport rate. Regarding N metabolism, the gene expression, nitrite reductase (NIR) and transport levels detected in young leaves, as well as determinations of the δ15N and amino acid profiles (arginine, leucine, tryptophan, aspartic acid, and serine) indicated activation of N metabolism and final transport of nitrate to leaves and photosynthesizing cells. On the other hand, under low VPD conditions, a positive effect was only observed on gene expression related to the final step of nitrate supply to photosynthesizing cells, whereas the amount of 15N supplied to the roots that reached the leaves decreased. Such an effect would suggest an impaired N remobilization from other organs to young leaves under water stress conditions and low VPD.

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“…Bektas et al (2016) found that shoot biomass, shallow and deep root weight, number of tillers per plant and plant height were significantly greater in landraces than in modern varieties. In several cases, winter cereal landraces have shown better performances than modern varieties, usually under challenging environmental conditions (Yahiaoui et al, 2014;Erice et al, 2019). When root systems were compared, an Algerian wheat landrace (Pelissier) had more root growth than a widely grown modern variety (Ashe et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Algerian durum wheat assessment for early drought tolerance shows landraces superiority

et al. 2019

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V IGOROUS seedling growth is important for good crop establishment, particularly under drought conditions. Our study was set out to identify useful traits and genotypes to enhance early drought tolerance of durum wheat. Two experiments were carried out. In the first one, thirty-five genotypes (Landrace and improved) were tested in a phytotron at germination and early seedling stages, subjected to three osmotic stress levels induced by polyethylene glycol PEG 6000 (0, -3, -6 bar). The second experiment was conducted in the field, with 27 out of the 35 genotypes. Root and shoot traits were measured at seedling stage in both experiments. High PEG 6000 treatment decreased final germination percentage (FGP) by 2.7% and delayed the time to reach 50% germination (t50) by 2.9h. Shoot length was the trait most affected by drought (40% reduction) as compared with other root traits, which even increased under drought, like root to shoot length ratio, root to shoot weight ratio, root dry weight and root number. Coleoptile length (CL) showed a contrasting relationship with other traits, it was negatively correlated in general under no stress, but with positive correlations under stress. Based on drought susceptibility index (DSI), Algerian wheat landraces were the most tolerant compared to modern genotypes. Correlations between traits measured in field and controlled conditions were low. CL could be a potential trait for screening drought tolerant genotypes. Algerian wheat landraces presented a clearly distinct ability for early drought tolerance, and could be a good resource for breeding programs.

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Impact of elevated CO2 and drought on yield and quality traits of a historical (Blanqueta) and a modern (Sula) durum wheat

Cited by 21 publications

References 25 publications

Assessing the evolution of wheat grain traits during the last 166 years using archived samples

Assessing the evolution of wheat grain traits during the last 166 years using archived samples

Short-Term Exposure to High Atmospheric Vapor Pressure Deficit (VPD) Severely Impacts Durum Wheat Carbon and Nitrogen Metabolism in the Absence of Edaphic Water Stress

Algerian durum wheat assessment for early drought tolerance shows landraces superiority

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