Počet záznamů: 1
The effect of elevated CO2 on photosynthesis is modulated by nitrogen supply and reduced water availability in Picea abies
- 1.
SYSNO ASEP 0573106 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The effect of elevated CO2 on photosynthesis is modulated by nitrogen supply and reduced water availability in Picea abies Tvůrce(i) Ofori-Amanfo, Kojo Kwakye (UEK-B) SAI, ORCID, RID
Klem, Karel (UEK-B) RID, ORCID, SAI
Veselá, Barbora (UEK-B) SAI, RID
Holub, Petr (UEK-B) RID, ORCID, SAI
Agyei, Thomas (UEK-B) ORCID, SAI, RID
Juráň, Stanislav (UEK-B) RID, SAI
Grace, John (UEK-B) SAI, RID
Marek, Michal V. (UEK-B) RID, ORCID, SAI
Urban, Otmar (UEK-B) RID, ORCID, SAIZdroj.dok. Tree Physiology - ISSN 0829-318X
Roč. 43, č. 6 (2023), s. 925-937Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova chlorophyll fluorescence ; climate change ; elevated carbon dioxide ; mineral supply ; plant physiology ; Rubisco carboxylation rate ; water availability Vědní obor RIV GK - Lesnictví Obor OECD Forestry CEP EF16_019/0000797 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CzeCOS IV - 90248 - Ústav výzkumu globální změny AV ČR, v. v. i. Způsob publikování Omezený přístup Institucionální podpora UEK-B - RVO:86652079 UT WOS 000960357700001 EID SCOPUS 85163183778 DOI 10.1093/treephys/tpad024 Anotace It is assumed that the stimulatory effects of elevated CO2 concentration ([CO2]) on photosynthesis and growth may be substantially reduced by co-occurring environmental factors and the length of CO2 treatment. Here, we present the study exploring the interactive effects of three manipulated factors ([CO2], nitrogen supply and water availability) on physiological (gas-exchange and chlorophyll fluorescence), morphological and stoichiometric traits of Norway spruce (Picea abies) saplings after 2 and 3 years of the treatment under natural field conditions. Such multifactorial studies, going beyond two-way interactions, have received only limited attention until now. Our findings imply a significant reduction of [CO2]-enhanced rate of CO2 assimilation under reduced water availability which deepens with the severity of water depletion. Similarly, insufficient nitrogen availability leads to a down-regulation of photosynthesis under elevated [CO2] being particularly associated with reduced carboxylation efficiency of the Rubisco enzyme. Such adjustments in the photosynthesis machinery result in the stimulation of water-use efficiency under elevated [CO2] only when it is combined with a high nitrogen supply and reduced water availability. These findings indicate limited effects of elevated [CO2] on carbon uptake in temperate coniferous forests when combined with naturally low nitrogen availability and intensifying droughts during the summer periods. Such interactions have to be incorporated into the mechanistic models predicting changes in terrestrial carbon sequestration and forest growth in the future. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2024 Elektronická adresa https://academic.oup.com/treephys/article/43/6/925/7067529?login=true
Počet záznamů: 1