Response of maize (Zea mays L.) on yield, physiology and stomatal behaviour under two different elevated CO2 concentrations. Do these anatomical changes affect the physiology of the C4 crop plant under high CO2 conditions?

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dc.contributor.authorKhan, Ira
dc.contributor.authorVanaja, Maddi
dc.contributor.authorSathish, Poldasari
dc.contributor.authorFaizan, Mohammad
dc.contributor.authorSoysal, Sipan
dc.contributor.authorRajput, Vishnu D.
dc.contributor.authorDjalovic, Ivica
dc.date.accessioned2024-12-24T19:30:21Z
dc.date.available2024-12-24T19:30:21Z
dc.date.issued2024
dc.departmentSiirt Üniversitesi
dc.description.abstractRising CO2 concentration in the atmosphere is a matter of global concern and poses apprehension about how plants will adapt to the changing environment. Various studies have proved that under high CO2 levels, plant physiology alters and affects plant functioning. However, under elevated CO2, the stomatal characters and their relation with physiological responses are still not yet clear. To find out these changes in the stomatal parameters at ambient and two elevated CO2 (550 ppm and 700 ppm) levels, four genotypes of maize (Zea mays L.) viz. DHM-117, Harsha, Varun and M-24 were grown in open-top chambers. In the study, it was observed that the stomatal density increased, stomatal size altered, stomatal conductance (gs) and transpiration rate (Tr) decreased under elevated CO2 (eCO2) while photosynthetic rate (Pn), water use efficiency (WUE), yield and biomass, of which especially the reproductive biomass increased. Under eCO2, stomatal and physiological changes were genotypic and CO2 concentration specific. Increased stomatal density at eCO2 was mainly due to increased abaxial stomatal density. The improved Pn and reduced Tr at 550 ppm improved the WUE in the plants, while this response was not observed at 700 ppm. These results elucidate that this C4 crop responded positively to up to 550 ppm of CO2 concentrations, and beyond this, the impact was minimal.
dc.description.sponsorshipPrince Sattam bin Abdulaziz University [PSAU/2024/01/78913]
dc.description.sponsorshipAcknowledgement. The authors extend their appreciation to Prince Sattam bin Abdulaziz University for funding this research work through the project No. PSAU/2024/01/78913.
dc.identifier.doi10.17221/105/2024-PSE
dc.identifier.endpage616
dc.identifier.issn1214-1178
dc.identifier.issn1805-9368
dc.identifier.issue10
dc.identifier.scopus2-s2.0-85206908764
dc.identifier.scopusqualityQ2
dc.identifier.startpage601
dc.identifier.urihttps://doi.org/10.17221/105/2024-PSE
dc.identifier.urihttps://hdl.handle.net/20.500.12604/7504
dc.identifier.volume70
dc.identifier.wosWOS:001304500400001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherCzech Academy Agricultural Sciences
dc.relation.ispartofPlant Soil and Environment
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241222
dc.subjectgrain number
dc.subjectgreenhouse gases
dc.subjectstomatal conductance
dc.subjectphotosynthesis
dc.subjectcereals
dc.subjectclimate change
dc.titleResponse of maize (Zea mays L.) on yield, physiology and stomatal behaviour under two different elevated CO2 concentrations. Do these anatomical changes affect the physiology of the C4 crop plant under high CO2 conditions?
dc.typeArticle

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