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Elevated CO2 modulates the effect of heat stress responses in Triticum aestivum by differential expression of an isoflavone reductase-like gene

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    SYSNO ASEP0553148
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleElevated CO2 modulates the effect of heat stress responses in Triticum aestivum by differential expression of an isoflavone reductase-like gene
    Author(s) Shokat, S. (DK)
    Novák, Ondřej (UEB-Q) RID, ORCID, SAI
    Široká, Jitka (UEB-Q) ORCID
    Singh, S. (GB)
    Gill, K.S. (US)
    Roitsch, Thomas (UEK-B) RID, ORCID, SAI
    Grosskinsky, D. K. (AT)
    Liu, F. (DK)
    Number of authors8
    Source TitleJournal of Experimental Botany - ISSN 0022-0957
    Roč. 72, č. 21 (2021), s. 7594-7609
    Number of pages16 s.
    Languageeng - English
    CountryGB - United Kingdom
    Keywordshigh-temperature stress ; carbohydrate-metabolism enzymes ; grain-yield ; antioxidant defenses ; salicylic-acid ; wheat ; tolerance ; drought ; leaf ; thermotolerance ; Antioxidative system ; crop physiology ; F-v/F-m ; heat stress ; phytohormones ; stress tolerance ; wheat
    OECD categoryPlant sciences, botany
    Method of publishingOpen access
    Institutional supportUEB-Q - RVO:61389030 ; UEK-B - RVO:86652079
    UT WOS000744583700019
    AnnotationTwo wheat genotypes forming high and low biomass, exhibiting differential expression of an isoflavone reductase-like (IRL) gene, and resulting in contrasting grain yield under heat stress field conditions were analyzed in detail for their responses under controlled heat and elevated CO2 conditions. Significant differences in IRL expression between the two lines were hypothesized to be the basis of their differential performance under the tested conditions and their stress tolerance potential. By a holistic approach integrating advanced cell physiological phenotyping of the antioxidative and phytohormone system in spikes and leaves with measurements of ecophysiological and agronomic traits, the genetic differences of the genotypes in IRL expression were assessed. In response to heat and elevated CO2, the two genotypes showed opposite regulation of IRL expression, which was associated with cytokinin concentration, total flavonoid contents, activity of superoxide dismutase, antioxidant capacity and photosynthetic rate in leaves, and cytokinin concentration and ascorbate peroxidase activity in spikes. Our study showed that IRL expression is associated with wheat yield performance under heat stress at anthesis, mediated by diverse physiological mechanisms. Hence, based on our results, the IRL gene is a promising candidate for developing genetic markers for breeding heat-tolerant wheat.
    WorkplaceInstitute of Experimental Botany
    ContactDavid Klier,, Tel.: 220 390 469
    Year of Publishing2022
    Electronic address
Number of the records: 1