Elevated CO₂ Modulates Plant Hydraulic Conductance Through Regulation of PIPs Under Progressive Soil Drying in Tomato Plants.

ABSTRACT: Increasing atmospheric CO₂ concentrations accompanied by abiotic stresses challenge food production worldwide. Elevated CO₂ (e[CO₂]) affects plant water relations via multiple mechanisms involving abscisic acid (ABA). Here, two tomato (Solanum lycopersicum) genotypes, Ailsa Craig (AC) and its ABA-deficient mutant (flacca), were used to investigate the responses of plant hydraulic conductance to e[CO₂] and drought stress. Results showed that e[CO₂] decreased transpiration rate (E) increased plant water use efficiency only in AC, whereas it increased daily plant water consumption and osmotic adjustment in both genotypes. Compared to growth at ambient [CO₂], AC leaf and root hydr

SUBMITTER: Li S 

PROVIDER: S-EPMC8218578 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature