Isoprene emissions from downy oak under water limitation during an entire growing season: what cost for growth?

ABSTRACT: Increases in the production of terpene- and phenolic-like compounds in plant species under abiotic stress conditions have been interpreted in physiological studies as a supplementary defense system due to their capacity to limit cell oxidation. From an ecological perspective however, these increases are only expected to confer competitive advantages if they do not imply a significant cost for the plant, that is, growth reduction. We investigated shifts of isoprene emissions, and to a lesser extent phenolic compound concentration, of Quercus pubescens Willd. from early leaf development to leaf senescence under optimal watering (control: C), mild and severe water stress (MS, SS). The impact of water stress was concomitantly assessed on plant physiological (chlorophyll fluorescence, stomatal

SUBMITTER: Genard-Zielinski AC 

PROVIDER: S-EPMC4226567 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature