Exploring natural genetic diversity in a bread wheat multi-founder population: dual imaging of photosynthesis and stomatal kinetics

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cg.contributor.affiliationUniversity of Essexen
cg.contributor.affiliationNational Institute of Animal Biotechnologyen
cg.contributor.affiliationBASF Belgium Coordination Center CommV-Innovation Center Genten
cg.contributor.affiliationUniversity of Bordeauxen
cg.contributor.affiliationInternational Maize and Wheat Improvement Centeren
cg.contributor.donorCGIAR Trust Funden
cg.contributor.donorBiotechnology and Biological Sciences Research Council, United Kingdomen
cg.contributor.donorBadische Anilin- und Soda-Fabriken
cg.contributor.initiativeAccelerated Breeding
cg.creator.identifierMichele Faralli: 0000-0002-7933-6142
cg.creator.identifierShellie A Wall: 0000-0001-7238-7679
cg.creator.identifierSilvère Vialet-Chabrand: 0000-0002-2105-2825
cg.creator.identifierAlexander Gallé: 0000-0001-6927-7911
cg.creator.identifierJeroen Van Rie: 0000-0002-5986-962X
cg.creator.identifierKeith Gardner: 0000-0002-4890-301X
cg.creator.identifierEric Ober: 0000-0002-4832-5897
cg.creator.identifierJames Cockram: 0000-0002-1014-6463
cg.creator.identifierTracy Lawson: 0000-0002-4073-7221
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1093/jxb/erae233en
cg.isijournalISI Journalen
cg.issn0022-0957en
cg.issn1460-2431en
cg.journalJournal of Experimental Botanyen
cg.reviewStatusPeer Reviewen
cg.subject.actionAreaGenetic Innovation
cg.subject.impactAreaNutrition, health and food security
dc.contributor.authorFaralli, Micheleen
dc.contributor.authorMellers, Gregen
dc.contributor.authorWall, Shellieen
dc.contributor.authorVialet-Chabrand, Silvereen
dc.contributor.authorForget, Guillaumeen
dc.contributor.authorGalle, Alexanderen
dc.contributor.authorVan Rie, Jeronen
dc.contributor.authorGardner, Keith A.en
dc.contributor.authorOber, Eric S.en
dc.contributor.authorCockram, Jamesen
dc.contributor.authorLawson, Tracyen
dc.date.accessioned2025-01-26T00:25:07Zen
dc.date.available2025-01-26T00:25:07Zen
dc.identifier.urihttps://hdl.handle.net/10568/169942
dc.titleExploring natural genetic diversity in a bread wheat multi-founder population: dual imaging of photosynthesis and stomatal kineticsen
dcterms.abstractRecent research has shown that optimizing photosynthetic and stomatal traits holds promise for improved crop performance. However, standard phenotyping tools such as gas exchange systems have limited throughput. In this work, a novel approach based on a bespoke gas exchange chamber allowing combined measurement of the quantum yield of PSII (Fq'/Fm'), with an estimation of stomatal conductance via thermal imaging was used to phenotype a range of bread wheat (Triticum aestivum L.) genotypes. Using the dual-imaging methods and traditional approaches, we found broad and significant variation in key traits, including photosynthetic CO2 uptake at saturating light and ambient CO2 concentration (Asat), photosynthetic CO2 uptake at saturating light and elevated CO2 concentration (Amax), the maximum velocity of Rubisco for carboxylation (Vcmax), time for stomatal opening (Ki), and leaf evaporative cooling. Anatomical analysis revealed significant variation in flag leaf adaxial stomatal density. Associations between traits highlighted significant relationships between leaf evaporative cooling, leaf stomatal conductance, and Fq'/Fm', highlighting the importance of stomatal conductance and stomatal rapidity in maintaining optimal leaf temperature for photosynthesis in wheat. Additionally, gsmin and gsmax were positively associated, indicating that potential combinations of preferable traits (i.e. inherently high gsmax, low Ki, and maintained leaf evaporative cooling) are present in wheat. This work highlights the effectiveness of thermal imaging in screening dynamic gs in a panel of wheat genotypes. The wide phenotypic variation observed suggested the presence of exploitable genetic variability in bread wheat for dynamic stomatal conductance traits and photosynthetic capacity for targeted optimization within future breeding programmes.en
dcterms.accessRightsOpen Access
dcterms.available2024-05-25
dcterms.bibliographicCitationFaralli, M., Mellers, G., Wall, S., Vialet-Chabrand, S., Forget, G., Galle, A., Van Rie, J., Gardner, K. A., Ober, E. S., Cockram, J., & Lawson, T. (2024). Exploring natural genetic diversity in a bread wheat multi-founder population: Dual imaging of photosynthesis and stomatal kinetics. Journal of Experimental Botany, 75(21), 6733-6747. https://doi.org/10.1093/jxb/erae233en
dcterms.hasVersionhttps://hdl.handle.net/10883/34661en
dcterms.issued2024-11
dcterms.languageen
dcterms.licenseCC-BY-4.0
dcterms.publisherOxford University Pressen
dcterms.subjectkineticsen
dcterms.subjectphotosynthesisen
dcterms.subjectstomatal conductanceen
dcterms.subjectinfrared imageryen
dcterms.subjectwater useen
dcterms.subjectwheaten
dcterms.typeJournal Article

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