High Stomatal Conductance in the Tomato Flacca Mutant Allows for Faster Photosynthetic Induction.

ABSTRACT: Due to their slow movement and closure upon shade, partially closed stomata can be a substantial limitation to photosynthesis in variable light intensities. The abscisic acid deficient flacca mutant in tomato (Solanum lycopersicum) displays very high stomatal conductance (g_s ). We aimed to determine to what extent this substantially increased g_s affects the rate of photosynthetic induction. Steady-state and dynamic photosynthesis characteristics were measured in flacca and wildtype leaves, by the use of simultaneous gas exchange and chlorophyll fluorometry. The steady-state response of photosynthesis to CO₂, maximum quantum efficiency of photosystem II photochemistry (F_v/F_m ), as well as mesoph

SUBMITTER: Kaiser E 

PROVIDER: S-EPMC7477092 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature