Overexpression of Water-Responsive Genes Promoted by Elevated CO₂ Reduces ROS and Enhances Drought Tolerance in Coffea Species.

ABSTRACT: Drought is a major constraint to plant growth and productivity worldwide and will aggravate as water availability becomes scarcer. Although elevated air [CO₂] might mitigate some of these effects in plants, the mechanisms underlying the involved responses are poorly understood in woody economically important crops such as Coffea. This study analyzed transcriptome changes in Coffea canephora cv. CL153 and C. arabica cv. Icatu exposed to moderate (MWD) or severe water deficits (SWD) and grown under ambient (aCO₂) or elevated (eCO₂) air [CO₂]. We found that changes in expression levels and regulatory pathways were barely affected by MWD, while the SWD condition led to a down-regulation of most differentially expressed genes (DEG

SUBMITTER: Marques I 

PROVIDER: S-EPMC9966387 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature