Guillaume Tcherkez1,2, Sinda Ben Mariem3, Luis Larraya4, Jose M García-Mina5, Angel M Zamarreño5, Alberto Paradela6, Jing Cui1, Franz-Werner Badeck7, Diego Meza8, Fulvia Rizza7, James Bunce9, Xue Han10, Sabine Tausz-Posch11, Luigi Cattivelli7, Andreas Fangmeier8, Iker Aranjuelo3. 1. Research School of Biology, ANU Joint College of Sciences, Australian National University, Canberra Australia. 2. Institut de Recherche en Horticulture et Semences, INRA d'Angers, Université d'Angers, Structure Fédérative de Recherche QUASAV, Beaucouzé, France. 3. AgroBiotechnology Institute (IdAB), CSIC-Government of Navarre, Mutilva, Spain. 4. Institute for Multidisciplinary Applied Biology, Departamento de Agronomía, Biotecnología y Alimentación, Universidad Pública de Navarra, Pamplona, Spain. 5. Facultades de Ciencias y Farmacia y Nutrición, Grupo de Biología y Química Agrícola (Departamento de Biología Ambiental), Universidad de Navarra, Pamplona, Spain. 6. Centro Nacional de Biotecnología-CSIC, Madrid, Spain. 7. CREA Research Centre for Genomics and Bioinformatics, Fiorenzuola d'Arda, Italy. 8. Institute of Landscape and Plant Ecology, University of Hohenheim, Stuttgart, Germany. 9. Adaptive Cropping Systems Lab, Beltsville Agricultural Research Center, Agricultural Research Service, US Department of Agriculture, Beltsville, MD, USA. 10. Institute of Environment and sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences (IEDA, CAAS), Beijing, China. 11. Department of Agriculture, Science and the Environment, School of Health, Medical and Applied Sciences, CQUniversity Australia, Kawana, QLD, Australia.
Abstract
While the general effect of CO2 enrichment on photosynthesis, stomatal conductance, N content, and yield has been documented, there is still some uncertainty as to whether there are interactive effects between CO2 enrichment and other factors, such as temperature, geographical location, water availability, and cultivar. In addition, the metabolic coordination between leaves and grains, which is crucial for crop responsiveness to elevated CO2, has never been examined closely. Here, we address these two aspects by multi-level analyses of data from several free-air CO2 enrichment experiments conducted in five different countries. There was little effect of elevated CO2 on yield (except in the USA), likely due to photosynthetic capacity acclimation, as reflected by protein profiles. In addition, there was a significant decrease in leaf amino acids (threonine) and macroelements (e.g. K) at elevated CO2, while other elements, such as Mg or S, increased. Despite the non-significant effect of CO2 enrichment on yield, grains appeared to be significantly depleted in N (as expected), but also in threonine, the S-containing amino acid methionine, and Mg. Overall, our results suggest a strong detrimental effect of CO2 enrichment on nutrient availability and remobilization from leaves to grains.
While the generpan class="Chemical">al efn>an class="Chemical">fect of CO2 enrichment on photosynthesis, stomatal conductance, N content, and yield has been documented, there is still some uncertainty as to whether there are interactive effects between CO2 enrichment and other factors, such as temperature, geographical location, water availability, and cultivar. In addition, the metabolic coordination between leaves and grains, which is crucial for crop responsiveness to elevated CO2, has never been examined closely. Here, we address these two aspects by multi-level analyses of data from several free-air CO2 enrichment experiments conducted in five different countries. There was little effect of elevated CO2 on yield (except in the USA), likely due to photosynthetic capacity acclimation, as reflected by protein profiles. In addition, there was a significant decrease in leaf amino acids (threonine) and macroelements (e.g. K) at elevated CO2, while other elements, such as Mg or S, increased. Despite the non-significant effect of CO2 enrichment on yield, grains appeared to be significantly depleted in N (as expected), but also in threonine, the S-containing amino acid methionine, and Mg. Overall, our results suggest a strong detrimental effect of CO2 enrichment on nutrient availability and remobilization from leaves to grains.
Authors: Chamindathee L Thilakarathne; Sabine Tausz-Posch; Karen Cane; Robert M Norton; Michael Tausz; Saman Seneweera Journal: Funct Plant Biol Date: 2013-03 Impact factor: 3.101
Authors: Matthew P Reynolds; Janet M Lewis; Karim Ammar; Bhoja R Basnet; Leonardo Crespo-Herrera; José Crossa; Kanwarpal S Dhugga; Susanne Dreisigacker; Philomin Juliana; Hannes Karwat; Masahiro Kishii; Margaret R Krause; Peter Langridge; Azam Lashkari; Suchismita Mondal; Thomas Payne; Diego Pequeno; Francisco Pinto; Carolina Sansaloni; Urs Schulthess; Ravi P Singh; Kai Sonder; Sivakumar Sukumaran; Wei Xiong; Hans J Braun Journal: J Exp Bot Date: 2021-07-10 Impact factor: 6.992