Field-grown ictB tobacco transformants show no difference in photosynthetic efficiency for biomass relative to the wild type.

ABSTRACT: In this study, four tobacco transformants overexpressing the inorganic carbon transporter B gene (ictB) were screened for photosynthetic performance relative to the wild type (WT) in field-based conditions. The WT and transgenic tobacco plants were evaluated for photosynthetic performance to determine the maximum rate of carboxylation (Vc, max), maximum rate of electron transport (Jmax), the photosynthetic compensation point (Γ*), quantum yield of PSII (ΦPSII), and mesophyll conductance (gm). Additionally, all plants were harvested to compare differences in above-ground biomass. Overall, transformants did not perform better than the WT on photosynthesis-, biomass-, and leaf composition-related traits. This is in contrast to previous studies that have suggested significant increases in phot

SUBMITTER: Ruiz-Vera UM 

PROVIDER: S-EPMC9366323 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature