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Elevated carbon dioxide alleviates the negative impact of drought on wheat by modulating plant metabolism and physiology
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SYSNO ASEP 0542773 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Elevated carbon dioxide alleviates the negative impact of drought on wheat by modulating plant metabolism and physiology Author(s) Ulfat, A. (DK)
Shokat, S. (DK)
Li, X. (CN)
Fang, L. (US)
Grosskinsky, D. K. (AT)
Majid, S. A. (PK)
Roitsch, Thomas (UEK-B) RID, ORCID, SAI
Liu, F. (DK)Number of authors 8 Article number 106804 Source Title Agricultural Water Management. - : Elsevier - ISSN 0378-3774
Roč. 250, MAY (2021)Number of pages 10 s. Language eng - English Country NL - Netherlands Keywords Antioxidant enzymes ; Carbohydrate metabolic enzymes ; Climate change ; Food security ; Total antioxidant potential and wheat Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Agriculture R&D Projects LO1415 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Research Infrastructure CzeCOS III - 90123 - Ústav výzkumu globální změny AV ČR, v. v. i. Method of publishing Limited access Institutional support UEK-B - RVO:86652079 UT WOS 000636459600002 EID SCOPUS 85102279999 DOI 10.1016/j.agwat.2021.106804 Annotation This study was conducted to understand the mechanism of wheat yield decrease under drought stress and the role of CO2 in modulating physiological and metabolic drought effects. Wheat was grown under ambient and elevated CO2 (400 and 800 ppm, respectively), and plants were subjected to drought stress prior to anthesis. Photosynthetic rate (An), stomatal conductance (Gs), transpiration rate (E) and activities of carbohydrate metabolic enzymes were decreased in leaf and increased in spikes during drought. Total antioxidant potential (TAP) was decreased under drought both in leaf and spike. Grain yield parameters were again reduced under drought, while An, E and most of the yield traits were increased under elevated CO2. The number of grains spike-1 correlated positively with An, TAP and cell wall invertase activity, while it negatively correlated with ascorbate peroxidase, cell wall peroxidase and glutathione reductase activities in leaves. Thousand kernel weight positively correlated with leaf phosphoglucoisomerase and spike glucose-6-phosphate dehydrogenase activities. This indicates that elevated CO2 could boost CO2 assimilation through an increase in antioxidant potential and facilitate more photosynthate supply via various increased carbohydrate metabolic enzyme activities, and thus increases yield. This could be a possible mechanism of grain yield increase caused by elevated CO2. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2022 Electronic address https://www.sciencedirect.com/science/article/pii/S037837742100069X?via%3Dihub
Number of the records: 1