Leaf-level metabolic changes in response to drought affect daytime CO2 emission and isoprenoid synthesis pathways.

ABSTRACT: In the near future, climate change will cause enhanced frequency and/or severity of droughts in terrestrial ecosystems, including tropical forests. Drought responses by tropical trees may affect their carbon use, including production of volatile organic compounds (VOCs), with implications for carbon cycling and atmospheric chemistry that are challenging to predict. It remains unclear how metabolic adjustments by mature tropical trees in response to drought will affect their carbon fluxes associated with daytime CO2 production and VOC emission. To address this gap, we used position-specific 13C-pyruvate labeling to investigate leaf CO2 and VOC fluxes from four tropical species before and during a controlled drought in the enclosed rainforest of Biosphere 2 (B2). Overall, plants that were mo

SUBMITTER: Ladd SN 

PROVIDER: S-EPMC10643046 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature