Visible Foliar Injury and Ecophysiological Responses to Ozone and Drought in Oak Seedlings.

ABSTRACT: To verify the responses of visible foliar injury (VFI), we exposed seedlings of three oak species for 4.5 months in an open air facility, using differing ozone (O₃) and drought treatments: O₃ (three levels from ambient to ×1.4 ambient), and drought (three levels of irrigation from 40% to 100% field capacity). We related the accumulated phytotoxic O₃ dose (POD₁) and cumulative drought index (CDI) to the O₃ and drought VFI and assessed growth increment (height, diameter, leaf number), biomass (of all organs), and physiological parameters: net photosynthesis per plant (P_n), photosynthetic nitrogen (PNUE) and phosphorus use efficiency (PPUE)). The results indicated that an increase in POD₁ promoted O₃

SUBMITTER: Moura BB 

PROVIDER: S-EPMC9317710 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature