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Concurrent elevation of CO2, O3and temperature severely affects oil quality and quantity in rapeseed
- Source :
- Namazkar, S, Stockmarr, A, Frenck, G, Egsgaard, H, Terkelsen, T, Mikkelsen, T N, Ingvordsen, C H & Bagger Jørgensen, R 2016, ' Concurrent elevation of CO 2, O 3 and temperature severely affects oil quality and quantity in rapeseed ', Journal of Experimental Botany, vol. 67, no. 14, pp. 4117-4125 . https://doi.org/10.1093/jxb/erw180, Journal of Experimental Botany
- Publication Year :
- 2016
- Publisher :
- Oxford University Press (OUP), 2016.
-
Abstract
- Highlights Oil quality in four rapeseed cultivars was severely impaired in a climate with simultaneous elevation of temperature, [CO2] and [O3]. The effects were unforeseeable from single factor experiments.<br />Plant oil is an essential dietary and bio-energy resource. Despite this, the effects of climate change on plant oil quality remain to be elucidated. The present study is the first to show changes in oil quality and quantity of four rapeseed cultivars in climate scenarios with elevated [CO2], [O3] and temperature (T) combined and as single factors. The combination of environmental factors resembled IPCC’s ‘business as usual’ emission scenario predicted for late this century. Generally, the climate scenarios reduced the average amounts of the six fatty acids (FAs) analysed, though in some treatments single FAs remained unchanged or even increased. Most reduced was the FA essential for human nutrition, C18:3-ω3, which decreased by 39% and 45% in the combined scenarios with elevated [CO2]+T+[O3] and [CO2]+T, respectively. Average oil content decreased 3–17%. When [CO2] and T were elevated concurrently, the seed biomass was reduced by half, doubling the losses in FAs and oil content. This corresponded to a 58% reduction in the oil yield per hectare, and C18:3-ω3 decreased by 77%. Furthermore, the polyunsaturated FAs were significantly decreased. The results indicate undesirable consequences for production and health benefits of rapeseed oil with future climate change. The results also showed strong interactive effects of CO2, T and O3 on oil quality, demonstrating why prediction of climate effects requires experiments with combined factors and should not be based on extrapolation from single factor experiments.
- Subjects :
- 0106 biological sciences
Hot Temperature
Rapeseed
oilseed rape
Physiology
Climate Change
Climate change
Biomass
Brassica napus L
Plant Science
vegetable oil quality
01 natural sciences
chemistry.chemical_compound
Ozone
Animal science
SDG 3 - Good Health and Well-being
greenhouse gases
SDG 13 - Climate Action
Plant Oils
Cultivar
Hectare
model
Brassica rapa
Fatty Acids
Vegetable oil quality
food and beverages
multifactor experiment
04 agricultural and veterinary sciences
Carbon Dioxide
Greenhouse gases
Human nutrition
chemistry
Agronomy
Greenhouse gas
Carbon dioxide
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Rapeseed Oil
Multifactor experiments
Oilseed rape
Research Paper
Model
010606 plant biology & botany
Subjects
Details
- ISSN :
- 14602431 and 00220957
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- Journal of Experimental Botany
- Accession number :
- edsair.doi.dedup.....6a402899fdc460b35cca1ca426dd4680