Počet záznamů: 1
Differential physiological and production responses of C3 and C4 crops to climate factor interactions
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SYSNO ASEP 0582478 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Differential physiological and production responses of C3 and C4 crops to climate factor interactions Tvůrce(i) Opoku, Emmanuel (UEK-B) RID, SAI
Sahu, Pranav P. (UEK-B) RID, SAI, ORCID
Findurová, Hana (UEK-B) SAI, ORCID, RID
Holub, Petr (UEK-B) RID, ORCID, SAI
Urban, Otmar (UEK-B) RID, ORCID, SAI
Klem, Karel (UEK-B) RID, ORCID, SAIČíslo článku 1345462 Zdroj.dok. Frontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
Roč. 15, FEB (2024)Poč.str. 15 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova climate change ; increased temperature ; drought ; elevated co2 ; barley ; sorghum Vědní obor RIV GC - Pěstování rostlin, osevní postupy Obor OECD Plant sciences, botany CEP GA21-18532S GA ČR - Grantová agentura ČR EH22_008/0004635 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GJ20-25845Y GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UEK-B - RVO:86652079 UT WOS 001162884900001 EID SCOPUS 85185101505 DOI 10.3389/fpls.2024.1345462 Anotace This study examined the effect of the interactions of key factors associated with predicted climate change (increased temperature, and drought) and elevated CO2 concentration on C3 and C4 crop representatives, barley and sorghum. The effect of two levels of atmospheric CO2 concentration (400 and 800 ppm), three levels of temperature regime (21/7, 26/12 and 33/19°C) and two regimes of water availability (simulation of drought by gradual reduction of irrigation and well-watered control) in all combinations was investigated in a pot experiment within growth chambers for barley variety Bojos and sorghum variety Ruby. Due to differences in photosynthetic metabolism in C3 barley and C4 sorghum, leading to different responses to elevated CO2 concentration, we hypothesized mitigation of the negative drought impact in barley under elevated CO2 concentration and, conversely, improved performance of sorghum at high temperatures. The results demonstrate the decoupling of photosynthetic CO2 assimilation and production parameters in sorghum. High temperatures and elevated CO2 concentration resulted in a significant increase in sorghum above- and below-ground biomass under sufficient water availability despite the enhanced sensitivity of photosynthesis to high temperatures. However, the negative effect of drought is amplified by the effect of high temperature, similarly for biomass and photosynthetic rates. Sorghum also showed a mitigating effect of elevated CO2 concentration on the negative drought impact, particularly in reducing the decrease of relative water content in leaves. In barley, no significant factor interactions were observed, indicating the absence of mitigating the negative drought effects by elevated CO2 concentration. These complex interactions imply that, unlike barley, sorghum can be predicted to have a much higher variability in response to climate change. However, under conditions combining elevated CO2 concentration, high temperature, and sufficient water availability, the outperforming of C4 crops can be expected. On the contrary, the C3 crops can be expected to perform even better under drought conditions when accompanied by lower temperatures. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2025 Elektronická adresa https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1345462/full
Počet záznamů: 1